Alloy material surface treatment combined liquid and surface treatment process

Abstract

The invention relates to the technical field of alloy material surface treatment, in particular to alloy material surface treatment combined liquid and a surface treatment process, and the alloy material surface treatment combined liquid comprises methyl methacrylate, butyl acrylate, a polymerizable polyhydroxy organic amine functional monomer aqueous solution and other raw materials. The combined liquid can form a self-crosslinking acrylic resin passivation film on the surface of the alloy material through a self-crosslinking reaction, so that the surface of the treated alloy material is endowed with more functional characteristics, such as improvement of corrosion resistance, wear resistance and adhesive force; secondly, a micro-arc oxidation film layer can be formed on the surface of the alloy through micro-arc oxidation treatment, and then the number of hydroxyl groups on the surface of the micro-arc oxidation film layer can be increased through chemical soaking of 8-hydroxyquinoline, so that subsequent formation of a self-crosslinking acrylic resin passivation film is facilitated, and the corrosion resistance of the alloy is improved through the protection performance among the multiple film layers. And the alloy material subjected to surface treatment can have better corrosion resistance and wear resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment of alloy materials, and particularly relates to a surface treatment combined solution for alloy materials and a surface treatment process. Background Art

[0002] In the fields of modern industrial production and materials science, alloy materials are widely used in many fields such as aerospace, automobile manufacturing, electronic devices, and biomedicine due to their unique physical and chemical properties. However, alloy materials often face problems such as poor corrosion resistance, insufficient wear resistance, and low surface hardness during use, which seriously limit the service life and application scope of alloy materials. Traditional surface treatment methods for alloy materials, such as electroplating, spraying, and chemical oxidation, although can improve the surface performance of alloy materials to a certain extent, often have disadvantages such as high treatment cost, serious environmental pollution, and unstable treatment effect.

[0003] Micro-arc oxidation technology, as a new type of surface treatment technology for alloy materials, has received extensive attention because it can form a uniform, dense, and high-hardness ceramic film on the surface of alloy materials. However, there are still some problems in the actual application of micro-arc oxidation technology, such as the optimization of the treatment solution formula is insufficient, the treatment process parameters are difficult to control, and the improvement of the surface performance of the treated alloy materials is limited.

[0004] To solve the above problems, researchers in this field have begun to explore new surface treatment combined solutions and surface treatment processes for alloy materials. An ideal surface treatment combined solution for alloy materials should have the following characteristics: simple components, easy to prepare, environmentally friendly and pollution-free, and can significantly improve the surface performance of alloy materials. Therefore, how to prepare an ideal surface treatment combined solution for alloy materials and improve the surface treatment process of alloy materials has become a technical problem that needs to be urgently explored and solved by researchers in this field. Summary of the Invention

[0005] Technical Problems to be Solved

[0006] In view of the above-mentioned disadvantages of the prior art, the present invention provides a surface treatment combined solution for alloy materials and a surface treatment process, so as to effectively improve the surface performance of alloy materials.

[0007] Technical Solutions

[0008] To achieve the above object, the present invention is realized by the following technical solutions:

[0009] A surface treatment combined solution for alloy materials, the surface treatment combined solution for alloy materials is composed of the following components: methyl methacrylate, butyl acrylate, an aqueous solution of a polymerizable polyhydroxy organic amine functional monomer, N-hydroxyethyl acrylamide, an emulsifier component, azodiisobutyramidine hydrochloride, and deionized water.

[0010] Furthermore, the preparation steps of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer are as follows:

[0011] Step A: Weigh 14 - 15 g of glycidyl methacrylate and place it in an ice - water bath. While stirring at a speed of 200 r / min, add 10 - 11 g of diethanolamine dropwise at a rate of 1 drop / s. After the addition is complete, continue stirring and reacting for 4 - 5 h, and the resulting product is denoted as the monomer component;

[0012] Step B: Dissolve the monomer component in deionized water with a weight 5 times that of the monomer component. Stir at a speed of 500 r / min for 10 min, and then adjust the pH to 5 - 6. The resulting product is the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer.

[0013] Furthermore, the emulsifier component is one of cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, or tetradecyltrimethylammonium chloride.

[0014] Furthermore, the preparation steps of the alloy material surface treatment combined solution are as follows:

[0015] Step 1: Weigh 18 - 20 g of methyl methacrylate and 15 - 16 g of butyl acrylate and mix them. After mixing evenly, the resulting product is denoted as the acrylate monomer component. Mix 45 - 50 g of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer and 2 - 3 g of N - hydroxyethyl acrylamide. After mixing evenly, the resulting product is denoted as the functional monomer component;

[0016] Step 2: Pour 10% of the total weight of the acrylate monomer component, 30% of the total weight of the functional monomer component, 0.3 - 0.5 g of the emulsifier component, and 30 - 35 g of deionized water into a flask. Stir and disperse at 75 °C in a water bath for 15 min, then add 0.1 g of azobisisobutyramidine hydrochloride. After reacting at a constant temperature for 10 min under nitrogen protection, the resulting product is denoted as the polymerization component;

[0017] Step 3: While dropping the remaining acrylate monomer component, the remaining functional monomer component, and 0.1 - 0.2 g of azobisisobutyramidine hydrochloride into the polymerization component at the same time, react at 75 °C in a water bath for 15 min, then raise the temperature to 85 °C and continue reacting for 2 h. After naturally cooling to room temperature, filter through a 200 - mesh sieve. The resulting product is the alloy material surface treatment combined solution.

[0018] Furthermore, in Step 1, the operation method for mixing evenly is to stir at a speed of 300 r / min for 10 min. In Step 2, the stirring speed for stirring and dispersing is 200 r / min, and the dropping rate in Step 3 is 2 drops / s.

[0019] A surface treatment process for an alloy material, using the surface treatment combined solution of the alloy material to treat the surface of the alloy material. The method of the surface treatment process is as follows:

[0020] S1. After grinding and cleaning the surface of the alloy material, then using the alloy material after grinding and cleaning as the working electrode and a stainless-steel container as the auxiliary electrode for micro-arc oxidation treatment, and the obtained is denoted as the pretreated alloy material.

[0021] S2. Immerse the pretreated alloy material in the 8-hydroxyquinoline surface treatment solution for 5 minutes. After the immersion ends, rinse it 3 times with deionized water, and then place it in a blast drying oven at 60 °C to dry to constant weight.

[0022] S3. Immerse the pretreated alloy material after being treated in S2 in the surface treatment combined solution of the alloy material. After soaking for 1 - 2 minutes, take it out and hover in the air for 3 seconds, and then put it into a blast drying oven at 100 °C to dry for 30 minutes. The obtained is the alloy material after being surface-treated with the surface treatment combined solution of the alloy material.

[0023] Furthermore, the method of grinding and cleaning treatment in S1 is as follows:

[0024] Grind the surface of the alloy material successively with 240#, 600# and 1000# sandpapers. Then place the ground alloy material in deionized water and ultrasonically clean it at a power of 200 W for 10 minutes. Finally, place it in a blast drying oven at 60 °C to dry to constant weight.

[0025] Furthermore, the formula of the electrolyte in S1 is: sodium metasilicate nonahydrate 10 g / L, potassium hydroxide 4 g / L, and sodium fluoride 3 g / L.

[0026] Furthermore, the process parameters of the micro-arc oxidation treatment in S1 are: current density is 0.07 A / cm 2 , frequency is 500 Hz, duty cycle is 10%, time is 5 minutes, and the electrolyte temperature is 30 °C.

[0027] Furthermore, the formula of the 8-hydroxyquinoline surface treatment solution in S2 is: potassium hydroxide 4 g / L and 8-hydroxyquinoline 6 g / L.

[0028] Beneficial effects

[0029] The present invention provides a surface treatment combined solution and a surface treatment process for an alloy material. Compared with the existing well-known technologies, the present invention has the following beneficial effects:

[0030] The surface treatment composite solution for the alloy material in the present invention includes raw materials such as methyl methacrylate, butyl acrylate, and an aqueous solution of a polymerizable polyhydroxy organic amine functional monomer. Through self-crosslinking reaction, the composite solution can form a self-crosslinking acrylic resin passivation film on the surface of the alloy material, thereby endowing the surface of the treated alloy material with more functional characteristics, such as improving corrosion resistance, wear resistance, and adhesion. Secondly, through micro-arc oxidation treatment in the present invention, a micro-arc oxidation film layer can be formed on the surface of the alloy. Then, through chemical immersion with 8-hydroxyquinoline, the number of hydroxyl groups can be increased on the surface of the micro-arc oxidation film layer, facilitating the subsequent formation of the self-crosslinking acrylic resin passivation film. Through the protective performance between the multi-layer film layers, the alloy material after surface treatment can have better corrosion resistance and wear resistance. Finally, the surface treatment composite solution prepared in the present invention is applicable to various alloy materials such as aluminum, magnesium, titanium, etc., and has broad application prospects. Specific Embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below in conjunction with embodiments.

[0033] The sources of some components in the examples and comparative examples are as follows:

[0034] Methyl methacrylate, Maanshan Jiuhe Chemical Co., Ltd.;

[0035] Butyl acrylate, Maanshan Jiuhe Chemical Co., Ltd.;

[0036] N-Hydroxyethyl acrylamide, Guangzhou Sanwang Chemical Materials Co., Ltd.;

[0037] Emulsifier components, Guangzhou Fufei Chemical Technology Co., Ltd.;

[0038] 2,2'-Azobis(2-methylpropionamidine) dihydrochloride, Maanshan Jiuhe Chemical Co., Ltd.;

[0039] Glycidyl methacrylate, Shanghai Macklin Biochemical Co., Ltd.;

[0040] Diethanolamine, Shanghai Macklin Biochemical Co., Ltd.;

[0041] Sodium metasilicate nonahydrate, Guangdong Xilong Chemical Co., Ltd.;

[0042] Potassium hydroxide, Aladdin Reagent Co., Ltd.;

[0043] Sodium fluoride, Beijing North Chemical Fine Chemicals Co., Ltd.;

[0044] 8-Hydroxyquinoline, Shanghai Macklin Biochemical Co., Ltd.;

[0045] Example 1

[0046] A surface treatment composite solution for alloy materials in this example, the surface treatment composite solution for alloy materials consists of the following components: methyl methacrylate, butyl acrylate, an aqueous solution of a polymerizable polyhydroxy organic amine functional monomer, N-hydroxyethyl acrylamide, an emulsifier component, azodiisobutyramidine hydrochloride, and deionized water.

[0047] Among them, the preparation steps of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer are as follows:

[0048] Step A: Weigh 14 g of glycidyl methacrylate and place it in an ice-water bath. Dropwise add 10 g of diethanolamine at a dropping rate of 1 drop / s under the stirring condition with a stirring speed of 200 r / min. After the dropping is completed, continue stirring and reacting for 4 h, and the obtained is denoted as the monomer component;

[0049] Step B: Dissolve the monomer component in deionized water with a weight 5 times that of it, stir at a stirring speed of 500 r / min for 10 min, and then adjust the pH to 5. The obtained is the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer.

[0050] The emulsifier component is tetradecyltrimethylammonium chloride.

[0051] The preparation steps of the surface treatment composite solution for alloy materials are as follows:

[0052] Step 1: Weigh 18 g of methyl methacrylate and 15 g of butyl acrylate and mix them. After stirring at a stirring speed of 300 r / min for 10 min, the obtained is denoted as the acrylate monomer component. Mix 45 g of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer and 2 g of N-hydroxyethyl acrylamide, and after stirring at a stirring speed of 300 r / min for 10 min, the obtained is denoted as the functional monomer component;

[0053] Step 2: Pour 10% of the total weight of the acrylate monomer component, 30% of the total weight of the functional monomer component, 0.3 g of the emulsifier component, and 30 g of deionized water into a flask, stir and disperse at a stirring speed of 200 r / min under the water bath condition of 75 °C for 15 min, then add 0.1 g of azodiisobutyramidine hydrochloride, and keep the temperature constant and react for 10 min under nitrogen protection. The obtained is denoted as the polymerization component;

[0054] Step 3: At a dropping rate of 2 drops / s, simultaneously drop the remaining acrylate monomer component, the remaining functional monomer component, and 0.1 g of azobisisobutyramidine hydrochloride into the polymerization component. After reacting for 15 min under the condition of a 75°C water bath, raise the temperature to 85°C and continue reacting for 2 h. Naturally cool to room temperature and then filter through a 200-mesh sieve. The obtained liquid is the surface treatment combined liquid for the alloy material.

[0055] A surface treatment process for an alloy material uses the surface treatment combined liquid for the alloy material to treat the surface of the alloy material. The method of the surface treatment process is as follows:

[0056] S1: After the surface of the alloy material is polished and cleaned, then use the polished and cleaned alloy material as the working electrode and a stainless steel container as the auxiliary electrode for micro-arc oxidation treatment. The obtained is denoted as the pretreated alloy material.

[0057] Among them, the method of polishing and cleaning treatment is as follows:

[0058] Polish the surface of the alloy material successively with 240#, 600#, and 1000# sandpapers. Then place the polished alloy material in deionized water and ultrasonically clean it at a power of 200 W for 10 min. Finally, place it in a blast drying oven at 60°C and dry it to constant weight.

[0059] The formula of the electrolyte is: 10 g / L of sodium metasilicate nonahydrate, 4 g / L of potassium hydroxide, and 3 g / L of sodium fluoride.

[0060] The process parameters of the micro-arc oxidation treatment are: the current density is 0.07 A / cm 2 , the frequency is 500 Hz, the duty cycle is 10%, the time is 5 min, and the electrolyte temperature is 30°C.

[0061] S2: Immerse the pretreated alloy material in the 8-hydroxyquinoline surface treatment liquid for 5 min. After the immersion ends, rinse it 3 times with deionized water. Then place it in a blast drying oven at 60°C and dry it to constant weight.

[0062] Among them, the formula of the 8-hydroxyquinoline surface treatment liquid is: 4 g / L of potassium hydroxide and 6 g / L of 8-hydroxyquinoline.

[0063] S3: Immerse the pretreated alloy material after being treated in S2 in the surface treatment combined liquid for the alloy material. Take it out after soaking for 2 min, hover in the air for 3 s, and then put it into a blast drying oven at 100°C and dry it for 30 min. The obtained is the alloy material after being surface-treated with the surface treatment combined liquid for the alloy material.

[0064] Example 2

[0065] A surface treatment combined solution for an alloy material in this embodiment, the surface treatment combined solution for the alloy material is composed of the following components: methyl methacrylate, butyl acrylate, an aqueous solution of a polymerizable polyhydroxy organic amine functional monomer, N-hydroxyethyl acrylamide, an emulsifier component, azodiisobutyramidine hydrochloride, and deionized water.

[0066] Among them, the preparation steps of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer are as follows:

[0067] Step A: Weigh 15 g of glycidyl methacrylate and place it in an ice-water bath. Under the stirring condition with a stirring speed of 200 r / min, dropwise add 11 g of diethanolamine at a dropping speed of 1 drop / s. After the dropping is completed, continue stirring and reacting for 5 h, and the obtained is denoted as the monomer component;

[0068] Step B: Dissolve the monomer component in deionized water with a weight 5 times that of it, stir at a stirring speed of 500 r / min for 10 min, and then adjust the pH to 6. The obtained is the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer.

[0069] The emulsifier component is dodecyltrimethylammonium bromide.

[0070] The preparation steps of the surface treatment combined solution for the alloy material are as follows:

[0071] Step 1: Weigh 20 g of methyl methacrylate and 16 g of butyl acrylate and mix them. After stirring at a stirring speed of 300 r / min for 10 min, the obtained is denoted as the acrylate monomer component. Mix 50 g of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer and 3 g of N-hydroxyethyl acrylamide, and after stirring at a stirring speed of 300 r / min for 10 min, the obtained is denoted as the functional monomer component;

[0072] Step 2: Pour 10% of the total weight of the acrylate monomer component, 30% of the total weight of the functional monomer component, 0.5 g of the emulsifier component, and 35 g of deionized water into a flask. Under the water bath condition at 75 °C, stir and disperse at a stirring speed of 200 r / min for 15 min, then add 0.1 g of azodiisobutyramidine hydrochloride. After reacting at a constant temperature for 10 min under nitrogen protection, the obtained is denoted as the polymerization component;

[0073] Step 3: Dropwise add the remaining acrylate monomer component, the remaining functional monomer component, and 0.2 g of azodiisobutyramidine hydrochloride to the polymerization component at a dropping speed of 2 drops / s simultaneously. After reacting at 75 °C in a water bath for 15 min, raise the temperature to 85 °C and continue reacting for 2 h. Naturally cool to room temperature and then filter through a 200-mesh sieve. The obtained is the surface treatment combined solution for the alloy material.

[0074] A surface treatment process for an alloy material, using the surface treatment combined solution for the alloy material to treat the surface of the alloy material. The method of the surface treatment process is as follows:

[0075] S1. After the surface of the alloy material is polished and cleaned, then using the polished and cleaned alloy material as the working electrode and a stainless-steel container as the auxiliary electrode for micro-arc oxidation treatment, and the obtained is denoted as the pretreated alloy material;

[0076] Among them, the method of polishing and cleaning treatment is:

[0077] Successively use 240#, 600# and 1000# sandpapers to polish the surface of the alloy material, then place the polished alloy material in deionized water and ultrasonically clean it at a power of 200W for 10min, and finally place it in a blast drying oven at 60°C and dry it to constant weight;

[0078] The formula of the electrolyte is: 10g / L sodium metasilicate nonahydrate, 4g / L potassium hydroxide and 3g / L sodium fluoride;

[0079] The process parameters of micro-arc oxidation treatment are: the current density is 0.07A / cm 2 , the frequency is 500Hz, the duty cycle is 10%, the time is 5min, and the electrolyte temperature is 30°C.

[0080] S2. Immerse the pretreated alloy material in the 8-hydroxyquinoline surface treatment solution for 5min, after the immersion, rinse it 3 times with deionized water, and then place it in a blast drying oven at 60°C and dry it to constant weight;

[0081] Among them, the formula of the 8-hydroxyquinoline surface treatment solution is: 4g / L potassium hydroxide and 6g / L 8-hydroxyquinoline.

[0082] S3. Immerse the pretreated alloy material after being treated in S2 in the alloy material surface treatment combined solution, take it out after soaking for 1min, hover in the air for 3s, and then put it into a blast drying oven at 100°C and dry it for 30min, and the obtained is the alloy material after being surface-treated with the alloy material surface treatment combined solution.

[0083] Example 3

[0084] A kind of alloy material surface treatment combined solution in this example, the alloy material surface treatment combined solution is composed of the following components: methyl methacrylate, butyl acrylate, aqueous solution of polymerizable polyhydroxy organic amine functional monomer, N-hydroxyethyl acrylamide, emulsifier component, azodiisobutyramidine hydrochloride and deionized water.

[0085] Among them, the preparation steps of the aqueous solution of polymerizable polyhydroxy organic amine functional monomer are:

[0086] Step A: Weigh 15 g of glycidyl methacrylate and place it in an ice-water bath. While stirring at a speed of 200 r / min, add 10 g of diethanolamine drop by drop at a rate of 1 drop / s. After the addition is complete, continue stirring and reacting for 5 h, and the resulting product is denoted as the monomer component;

[0087] Step B: Dissolve the monomer component in deionized water with a weight 5 times that of the monomer component. Stir at a speed of 500 r / min for 10 min and then adjust the pH to 6. The resulting product is the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer.

[0088] The emulsifier component is cetyltrimethylammonium bromide.

[0089] The preparation steps of the surface treatment composite liquid for the alloy material are as follows:

[0090] Step 1: Weigh 19 g of methyl methacrylate and 15 g of butyl acrylate and mix them. After stirring at a speed of 300 r / min for 10 min, the resulting product is denoted as the acrylate monomer component. Mix 48 g of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer and 3 g of N-hydroxyethyl acrylamide. After stirring at a speed of 300 r / min for 10 min, the resulting product is denoted as the functional monomer component;

[0091] Step 2: Pour 10% of the total weight of the acrylate monomer component, 30% of the total weight of the functional monomer component, 0.4 g of the emulsifier component, and 33 g of deionized water into a flask. Under the water bath condition of 75 °C, stir and disperse at a speed of 200 r / min for 15 min, then add 0.1 g of azobisisobutyramidine hydrochloride. After reacting at a constant temperature for 10 min under nitrogen protection, the resulting product is denoted as the polymerization component;

[0092] Step 3: While dropping the remaining acrylate monomer component, the remaining functional monomer component, and 0.1 g of azobisisobutyramidine hydrochloride into the polymerization component at a rate of 2 drops / s simultaneously, react at 75 °C for 15 min, then raise the temperature to 85 °C and continue reacting for 2 h. After natural cooling to room temperature, filter through a 200-mesh sieve. The resulting product is the surface treatment composite liquid for the alloy material.

[0093] A surface treatment process for an alloy material uses the surface treatment composite liquid for the alloy material to treat the surface of the alloy material. The method of the surface treatment process is as follows:

[0094] S1: After the surface of the alloy material is polished and cleaned, then use the polished and cleaned alloy material as the working electrode and a stainless steel container as the auxiliary electrode for micro-arc oxidation treatment. The resulting product is denoted as the pretreated alloy material;

[0095] Among them, the method of the polishing and cleaning treatment is as follows:

[0096] The surface of the alloy material was polished successively with 240#, 600# and 1000# sandpapers, then the polished alloy material was placed in deionized water and ultrasonically cleaned at a power of 200W for 10min, and finally dried to constant weight in a blast drying oven at 60°C;

[0097] The formula of the electrolyte is: 10g / L sodium metasilicate nonahydrate, 4g / L potassium hydroxide and 3g / L sodium fluoride;

[0098] The process parameters of micro-arc oxidation treatment are: the current density is 0.07A / cm 2 , the frequency is 500Hz, the duty cycle is 10%, the time is 5min, and the electrolyte temperature is 30°C.

[0099] S2. Immerse the pretreated alloy material in the 8-hydroxyquinoline surface treatment solution for 5min. After the immersion, rinse it 3 times with deionized water, and then dry it to constant weight in a blast drying oven at 60°C;

[0100] Among them, the formula of the 8-hydroxyquinoline surface treatment solution is: 4g / L potassium hydroxide and 6g / L 8-hydroxyquinoline.

[0101] S3. Immerse the pretreated alloy material after S2 treatment in the alloy material surface treatment combined solution, take it out after 2min of immersion, hover in the air for 3s, and then put it into a blast drying oven at 100°C and dry for 30min. What is obtained is the alloy material after surface treatment with the alloy material surface treatment combined solution.

[0102] Comparative Example 1

[0103] A kind of alloy material surface treatment combined solution and surface treatment process provided by this comparative example are roughly the same as those in Example 1. The main difference is that in this Comparative Example 1, the alloy material surface treatment combined solution in Example 1 is replaced with an alloy passivation solution purchased from Suzhou Jiuchen Environmental Protection Technology Co., Ltd.

[0104] Comparative Example 2

[0105] A kind of alloy material surface treatment combined solution and surface treatment process provided by this comparative example are roughly the same as those in Example 1. The main difference is that in this Comparative Example 2, the surface treatment process in Example 1 is changed to: directly immerse the alloy material in the alloy material surface treatment combined solution, take it out after 2min of immersion, hover in the air for 3s, and then put it into a blast drying oven at 100°C and dry for 30min. What is obtained is the alloy material after surface treatment with the alloy material surface treatment combined solution.

[0106] Performance Test

[0107] The alloy materials after being surface-treated with the combined solution for alloy material surface treatment in Examples 1 - 3 and Comparative Examples 1 - 2 were respectively marked as Example 1, Example 2, Example 3, Comparative Example 1, and Comparative Example 2. Then, the performances of Examples 1 - 3 and Comparative Examples 1 - 2 were detected. The salt spray corrosion performance experiment was carried out with reference to the standard of GB / T10125 - 1997. The experimental equipment used was the YWX / Q salt spray chamber produced by Hefei Anke Environmental Experimental Equipment Co., Ltd. The experimental temperature of the salt spray chamber was 35 ± 2 °C, the NaCl concentration was 50 ± 5 g / L, the pH value was between 6.5 - 7.2. During the salt spray experiment, the test piece should form an angle of 30 - 45° with the horizontal direction. The surface corrosion conditions after 12 h, 36 h, and 48 h of salt spray time were recorded, and the obtained results are shown in the following table:

[0108]

[0109] It can be seen from the data in the above table that the corrosion resistance of the alloy materials after being surface-treated with the combined solution for alloy material surface treatment in Examples 1 - 3 of the present invention is significantly better than that of Comparative Examples 1 - 2, indicating that the combined solution for alloy material surface treatment prepared by the present invention can form a passivation film with better corrosion resistance, and adding grinding and cleaning treatment, micro-arc oxidation treatment, and immersion in 8-hydroxyquinoline surface treatment solution during the passivation treatment can enhance the corrosion resistance of the passivation film on the surface of the alloy material.

[0110] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0111] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined solution for surface treatment of an alloy material, characterized in that, The surface treatment combined solution for the alloy material is composed of the following components: methyl methacrylate, butyl acrylate, an aqueous solution of a polymerizable polyhydroxy organic amine functional monomer, N-hydroxyethyl acrylamide, an emulsifier component, azodiisobutyramidine hydrochloride, and deionized water.

2. The surface treatment combined liquid for an alloy material according to claim 1, wherein, The preparation steps of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer are as follows: Step A: Weigh 14-15 g of glycidyl methacrylate and place it in an ice-water bath. Dropwise add 10-11 g of diethanolamine at a dropping rate of 1 drop / s under the stirring condition with a stirring speed of 200 r / min. After the dropping is completed, continue stirring and reacting for 4-5 h, and the obtained product is denoted as the monomer component; Step B: Dissolve the monomer component in deionized water with a weight 5 times that of the monomer component, stir at a stirring speed of 500 r / min for 10 min, and then adjust the pH to 5-6. The obtained product is the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer.

3. The surface treatment combined solution for an alloy material according to claim 1, characterized in that The emulsifier component is one of cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, and tetradecyltrimethylammonium chloride.

4. The surface treatment composite liquid for an alloy material according to claim 1, wherein The preparation steps of the surface treatment combined solution for the alloy material are as follows: Step 1: Weigh and mix 18-20 g of methyl methacrylate and 15-16 g of butyl acrylate. After mixing evenly, the obtained product is denoted as the acrylate monomer component. Mix and evenly mix 45-50 g of the aqueous solution of the polymerizable polyhydroxy organic amine functional monomer and 2-3 g of N-hydroxyethyl acrylamide. The obtained product is denoted as the functional monomer component; Step 2: Pour 10% of the total weight of the acrylate monomer component, 30% of the total weight of the functional monomer component, 0.3-0.5 g of the emulsifier component, and 30-35 g of deionized water into a flask. Stir and disperse at 75 °C in a water bath for 15 min, then add 0.1 g of azodiisobutyramidine hydrochloride. After reacting at a constant temperature for 10 min under nitrogen protection, the obtained product is denoted as the polymerization component; Step 3: Simultaneously dropwise add the remaining acrylate monomer component, the remaining functional monomer component, and 0.1-0.2 g of azodiisobutyramidine hydrochloride to the polymerization component. React at 75 °C in a water bath for 15 min, then raise the temperature to 85 °C and continue reacting for 2 h. Naturally cool to room temperature and then filter through a 200-mesh sieve. The obtained product is the surface treatment combined solution for the alloy material.

5. The surface treatment combination liquid for an alloy material according to claim 4, characterized in that, The operation method of mixing evenly in Step 1 is to stir at a stirring speed of 6. A surface treatment process for an alloy material, characterized in that, ​ ​ ​ S3. Immerse the pretreated alloy material after S2 treatment into the combined solution for surface treatment of alloy materials. Take it out after soaking for 1 - 2 min, hover in the air for 3 s, and then put it into a forced-air drying oven at 100 °C for drying for 30 min. What is obtained is the alloy material after surface treatment with the combined solution for surface treatment of alloy materials.

7. A surface treatment process for an alloy material according to claim 6, characterized in that, The method of grinding and cleaning treatment in S1 is as follows: Grind the surface of the alloy material successively with 240#, 600# and 1000# sandpapers. Then place the ground alloy material in deionized water and ultrasonically clean it at a power of 200 W for 10 min. Finally, place it in a forced-air drying oven at 60 °C for drying to constant weight.

8. A surface treatment process for an alloy material according to claim 6, characterized in that, The formula of the electrolyte in S1 is: 10 g / L of sodium metasilicate nonahydrate, 4 g / L of potassium hydroxide and 3 g / L of sodium fluoride.

9. The surface treatment process of an alloy material according to claim 6, wherein, The process parameters of micro-arc oxidation treatment in S1 are as follows: the current density is 0.07 A / cm 2 , the frequency is 500 Hz, the duty cycle is 10%, the time is 5 min, and the electrolyte temperature is 30 °C.

10. A surface treatment process for an alloy material according to claim 6, characterized in that, The formula of the 8-hydroxyquinoline surface treatment solution in S2 is: 4 g / L of potassium hydroxide and 6 g / L of 8-hydroxyquinoline.

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