A tungsten alloy material and its application in the preparation of clock pendulums

Abstract

The present invention discloses a tungsten alloy material, comprising the following raw materials in parts by weight: 90-95 parts of tungsten powder, 3-6 parts of copper powder, 1-3 parts of nickel powder, 1-2 parts of modified cerium oxide, 65-75 parts of treatment modification liquid, and 2-5 parts of pure praseodymium powder. The tungsten alloy of the present invention uses tungsten powder, copper powder, modified cerium oxide, and pure praseodymium powder as raw materials. After the cerium oxide is modified and optimized, the raw materials are coordinated to enhance the interfacial property between the raw materials, improve the strength-toughness ratio of the product. At the same time, the treatment modification liquid is formed by mixing bentonite with additives, and the formed treatment liquid modifies and improves the alloy surface, enhancing the interfacial activity of the alloy. In the subsequent secondary heat treatment, the microparticles further shrink and compact, improving the processing performance, enhancing densification, and reducing internal defects.

Description

Technical Field

[0001] The invention relates to the technical field of tungsten alloy materials, and in particular to a tungsten alloy material and application thereof in preparing watch weights and plumbs. Background Art

[0002] Tungsten alloy is an alloy composed of tungsten as the base and other elements. Among metals, tungsten has the highest melting point, high temperature strength and creep resistance, as well as good thermal conductivity, electrical conductivity and electron emission properties. It has a high specific gravity. In addition to being used in large quantities to make hard alloys and as alloy additives, tungsten and its alloys are widely used in the electronics and electric light source industries, and are also used in aerospace, casting, weapons and other departments to make rocket nozzles, die-casting molds, armor-piercing projectile cores, contacts, heating elements and heat shields.

[0003] Although the tensile strength of existing tungsten alloys meets the requirements for use, their fracture toughness is poor and their strength-to-toughness ratio is not coordinated. Based on this, the present invention further improves and optimizes them and provides a tungsten alloy material and its application in the preparation of watch weights. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a tungsten alloy material and its application in the preparation of watch weights, so as to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a tungsten alloy material, comprising the following raw materials in parts by weight:

[0007] 90-95 parts of tungsten powder, 3-6 parts of copper powder, 1-3 parts of nickel powder, 1-2 parts of modified cerium trioxide, 65-75 parts of treated modification liquid, and 2-5 parts of pure praseodymium powder.

[0008] Preferably, the tungsten alloy material is the following raw materials in parts by weight:

[0009] 90 parts of tungsten powder, 4.5 parts of copper powder, 2 parts of nickel powder, 1.5 parts of modified cerium trioxide, 70 parts of treated modification liquid, and 3.5 parts of pure praseodymium powder.

[0010] Preferably, the modification method of the modified cerium trioxide is:

[0011] S01: Add cerium trioxide into 4-5 times hydrochloric acid solution, then add 5-10% of lanthanum chloride modification liquid and 2-5% of sodium alkyl sulfonate to the total amount of cerium trioxide, stir evenly, wash with water and dry;

[0012] S02: adding 2-5 parts of chitosan to 10-20 parts of 10% sodium alginate solution by mass, adding 1-4 parts of sodium carboxymethyl cellulose and 1-4 parts of pentadecylphenol, stirring sufficiently to obtain an additive;

[0013] S03: Add the additive to S01, stir thoroughly, and finally wash with water and dry to obtain modified cerium oxide.

[0014] Preferably, the mass fraction of the hydrochloric acid solution is 5 - 10%.

[0015] Preferably, the lanthanum chloride modification solution comprises the following raw materials in parts by weight: 5 - 10 parts of lanthanum chloride, 1 - 4 parts of paracetamol, 10 - 15 parts of deionized water, and 1 - 4 parts of phosphate buffer solution.

[0016] Preferably, the pH value of the phosphate buffer solution is 5.0 - 5.5.

[0017] Preferably, the preparation method of the treatment modification solution is as follows:

[0018] S11: First, thermally improve bentonite, then cool it to room temperature, and then send it into 5 - 10 times of deionized water and stir evenly;

[0019] S12: Add 1 - 3 parts of silane coupling agent to 10 - 15 parts of hydrochloric acid aqueous solution, and then add 2 - 5 parts of phenolsulfonic acid sodium, and stir evenly to obtain an additive;

[0020] S13: Add 15 - 25 parts of the additive to 30 - 40 parts of S11, stir at a speed of 500 - 1000 r / min for 25 - 35 min, the stirring temperature is 45 - 55 °C, after stirring, wash with water and dry to obtain the treatment modification solution; the mass fraction of the hydrochloric acid aqueous solution is 5 - 10%; the silane coupling agent is coupling agent KH560.

[0021] Preferably, the steps of the thermal improvement treatment of bentonite are as follows: First, heat it up to 350 - 360 °C at a rate of 1 - 3 °C / min, then keep it warm for 5 - 10 min, then heat it up to 500 - 510 °C at a rate of 5 °C / min, continue to keep it warm for 10 - 20 min, and finally cool it to room temperature in water at 5 - 10 °C, then filter, wash with water and dry.

[0022] The present invention also provides a method for preparing a tungsten alloy material, comprising the following steps: successively stirring and mixing tungsten powder, copper powder, nickel powder, modified cerium trioxide, and pure praseodymium powder raw materials until fully mixed, then adding them into a mold for pressing and forming, with a pressing pressure of 20 - 25 MPa and a pressing time of 5 - 10 min. After pressing, hot pressing and sintering are carried out at 1230 - 1300 °C for 1 - 2 h, with a sintering pressure of 2 - 5 Mpa. After sintering, ultrasonic dispersion treatment is finally carried out in a treatment modification liquid, with an ultrasonic power of 100 - 200 W and an ultrasonic time of 10 - 20 min. After ultrasonic treatment, washing and drying are carried out, and then heat treatment is carried out at 1000 - 1200 °C for 10 - 20 min. Finally, it is cooled to room temperature to obtain the tungsten alloy of the present invention.

[0023] The present invention also provides an application of the tungsten alloy material in the preparation of clock pendulums.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The tungsten alloy of the present invention uses tungsten powder, copper powder, nickel powder, modified cerium trioxide, and pure praseodymium powder as raw materials. After the cerium trioxide is modified and optimized, it coordinates with the raw materials, enhances the interfacial property between the raw materials, improves the strength and toughness ratio of the product. At the same time, the treatment modification liquid is formed by bentonite with additives, and the formed treatment liquid modifies and improves the alloy surface, enhancing the interfacial activity of the alloy. In the subsequent secondary heat treatment, the particles further shrink and compact, further improving the performance effect of the product, improving the processing performance, enhancing densification, and reducing internal defects. Specific Embodiments

[0026] The following combines specific embodiments to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] A tungsten alloy material in this embodiment comprises the following raw materials in parts by weight:

[0028] 90 - 95 parts of tungsten powder, 3 - 6 parts of copper powder, 1 - 3 parts of nickel powder, 1 - 2 parts of modified cerium trioxide, 65 - 75 parts of treatment modification liquid, and 2 - 5 parts of pure praseodymium powder.

[0029] The tungsten alloy material in this embodiment is the following raw materials in parts by weight:

[0030] 90 parts of tungsten powder, 4.5 parts of copper powder, 2 parts of nickel powder, 1.5 parts of modified cerium trioxide, 70 parts of treatment modification liquid, and 3.5 parts of pure praseodymium powder.

[0031] The modification method of the modified cerium trioxide in this embodiment is:

[0032] S01: Add cerium trioxide into 4-5 times hydrochloric acid solution, then add 5-10% of lanthanum chloride modification liquid and 2-5% of sodium alkyl sulfonate to the total amount of cerium trioxide, stir evenly, wash with water and dry;

[0033] S02: adding 2-5 parts of chitosan to 10-20 parts of 10% sodium alginate solution by mass, adding 1-4 parts of sodium carboxymethyl cellulose and 1-4 parts of pentadecylphenol, stirring sufficiently to obtain an additive;

[0034] S03: Add the additive to S01, stir thoroughly, and finally wash with water and dry to obtain modified cerium trioxide.

[0035] The mass fraction of the hydrochloric acid solution in this embodiment is 5-10%.

[0036] The lanthanum chloride modified solution of this embodiment includes the following raw materials in parts by weight: 5-10 parts of lanthanum chloride, 1-4 parts of acetaminophen, 10-15 parts of deionized water, and 1-4 parts of phosphate buffer solution.

[0037] The pH value of the phosphate buffer solution of this embodiment is 5.0-5.5.

[0038] The preparation method of the treated modified liquid of this embodiment is:

[0039] S11: The bentonite is first subjected to thermal treatment, then cooled to room temperature, and then placed in 5-10 times deionized water and stirred evenly;

[0040] S12: adding 1-3 parts of a silane coupling agent to 10-15 parts of a hydrochloric acid aqueous solution, and then adding 2-5 parts of sodium phenolsulfonate, stirring evenly to obtain an additive;

[0041] S13: Add 15-25 parts of additives to 30-40 parts of S11, stir at a speed of 500-1000r / min for 25-35min, and the stirring temperature is 45-55°C. After the stirring is completed, wash with water and dry to obtain a treated modified liquid; the mass fraction of the hydrochloric acid aqueous solution is 5-10%; the silane coupling agent is coupling agent KH560.

[0042] The steps of the bentonite thermal improvement treatment in this embodiment are: first, heat up to 350-360°C at a rate of 1-3°C / min, then keep warm for 5-10min, then heat up to 500-510°C at a rate of 5°C / min, continue to keep warm for 10-20min, and finally cool to room temperature in 5-10°C water, then filter, wash with water, and dry.

[0043] A preparation method of a tungsten alloy material in this embodiment includes the following steps: successively stirring and mixing tungsten powder, copper powder, nickel powder, modified cerium oxide, and pure praseodymium powder raw materials until fully mixed, and then adding them into a mold for molding. The pressing pressure is 20 - 25 MPa, the pressing time is 5 - 10 min. After pressing, hot pressing and sintering are carried out at 1230 - 1300 °C for 1 - 2 h, and the sintering pressure is 2 - 5 Mpa. After sintering, finally, ultrasonic dispersion treatment is carried out in a treatment modification liquid, the ultrasonic power is 100 - 200 W, the ultrasonic time is 10 - 20 min. After ultrasonic treatment, washing with water and drying are carried out, and then heat treatment is carried out at 1000 - 1200 °C for 10 - 20 min. Finally, it is restored to room temperature to obtain the tungsten alloy of the present invention.

[0044] An application of the tungsten alloy material in this embodiment in the preparation of a clock plumb bob.

[0045] Example 1.

[0046] A tungsten alloy material in this embodiment includes the following raw materials in parts by weight:

[0047] 90 parts of tungsten powder, 3 parts of copper powder, 1 part of nickel powder, 1 part of modified cerium oxide, 65 parts of treatment modification liquid, and 2 parts of pure praseodymium powder.

[0048] The modification method of the modified cerium oxide in this embodiment is as follows:

[0049] S01: Feed cerium oxide into a hydrochloric acid solution 4 times its amount, and then add a lanthanum chloride modification liquid accounting for 5% of the total amount of cerium oxide and 2% of sodium alkyl sulfonate, stir evenly, wash with water and dry;

[0050] S02: Add 2 parts of chitosan into 10 parts of a sodium alginate solution with a mass fraction of 10%, add 1 part of sodium carboxymethyl cellulose and 1 part of pentadecylphenol, and stir fully to obtain an additive;

[0051] S03: Add the additive into S01, stir fully, and finally wash with water and dry to obtain the modified cerium oxide.

[0052] The mass fraction of the hydrochloric acid solution in this embodiment is 5%.

[0053] The lanthanum chloride modification liquid in this embodiment includes the following raw materials in parts by weight: 5 parts of lanthanum chloride, 1 part of paracetamol, 10 parts of deionized water, and 1 part of phosphate buffer solution.

[0054] The pH value of the phosphate buffer solution in this embodiment is 5.0.

[0055] The preparation method of the treatment modification liquid in this embodiment is as follows:

[0056] S11: First, thermally improve bentonite, then cool it to room temperature, and subsequently feed it into 5 times the amount of deionized water and stir evenly.

[0057] S12: Add 1 part of silane coupling agent to 10 parts of hydrochloric acid aqueous solution, and then add 2 parts of sodium phenolsulfonate, and stir evenly to obtain an additive.

[0058] S13: Add 15 parts of the additive to 30 parts of S11, stir at a speed of 500 r / min for 25 min, the stirring temperature is 45 °C. After stirring, wash with water and dry to obtain a treated modification liquid; the mass fraction of the hydrochloric acid aqueous solution is 5%; the silane coupling agent is coupling agent KH560.

[0059] The steps for the thermal improvement treatment of bentonite in this example are as follows: First, heat it to 350 °C at a rate of 1 °C / min, then keep it warm for 5 min, then heat it to 500 °C at a rate of 5 °C / min, continue to keep it warm for 10 min, and finally cool it to room temperature in water at 5 °C, then filter, wash with water and dry.

[0060] A method for preparing a tungsten alloy material in this example includes the following steps: successively stir and mix tungsten powder, copper powder, nickel powder, modified cerium oxide, and pure praseodymium powder raw materials until well mixed, then add them into a mold and press them into shape. The pressing pressure is 20 MPa and the pressing time is 5 min. After pressing, hot press and sinter at 1230 °C for 1 h, the sintering pressure is 2 Mpa. After sintering, finally perform ultrasonic dispersion treatment in the treated modification liquid, the ultrasonic power is 100 W, the ultrasonic time is 10 min. After ultrasonic treatment, wash with water and dry, then perform heat treatment at 1000 °C for 10 min, and finally restore to room temperature to obtain the tungsten alloy of the present invention.

[0061] An application of the tungsten alloy material in this example in the preparation of clock pendulums.

[0062] Example 2.

[0063] A tungsten alloy material in this example includes the following raw materials in parts by weight:

[0064] 95 parts of tungsten powder, 6 parts of copper powder, 3 parts of nickel powder, 2 parts of modified cerium oxide, 75 parts of treated modification liquid, and 5 parts of pure praseodymium powder.

[0065] The modification method of the modified cerium oxide in this example is as follows:

[0066] S01: Feed cerium oxide into 5 times the amount of hydrochloric acid solution, then add 10% of lanthanum chloride modification liquid and 5% of alkyl sulfonate based on the total amount of cerium oxide, stir evenly, wash with water and dry.

[0067] S02: Add 5 parts of chitosan into 20 parts of sodium alginate solution with a mass fraction of 10%, add 4 parts of sodium carboxymethyl cellulose and 4 parts of pentadecylphenol, and stir well to obtain an additive;

[0068] S03: Add the additive into S01, stir well, and finally wash with water and dry to obtain modified cerium oxide.

[0069] Preferably, the mass fraction of the hydrochloric acid solution is 10%.

[0070] Preferably, the lanthanum chloride modification solution comprises the following raw materials in parts by weight: 10 parts of lanthanum chloride, 4 parts of paracetamol, 15 parts of deionized water, and 4 parts of phosphate buffer solution.

[0071] The pH value of the phosphate buffer solution in this example is 5.5.

[0072] The preparation method of the treatment modification solution in this example is as follows:

[0073] S11: First, thermally improve bentonite, then cool it to room temperature, and then send it into 10 times of deionized water and stir evenly;

[0074] S12: Add 3 parts of silane coupling agent into 15 parts of hydrochloric acid aqueous solution, and then add 5 parts of sodium phenolsulfonate, and stir evenly to obtain an additive;

[0075] S13: Add 25 parts of the additive into 40 parts of S11, stir at a speed of 1000 r / min for 35 min, the stirring temperature is 55 °C, after stirring, wash with water and dry to obtain a treatment modification solution; the mass fraction of the hydrochloric acid aqueous solution is 10%; the silane coupling agent is coupling agent KH560.

[0076] The steps of the thermal improvement treatment of bentonite in this example are as follows: First, heat up to 360 °C at a rate of 3 °C / min, then keep it warm for 10 min, then heat up to 510 °C at a rate of 5 °C / min, continue to keep it warm for 20 min, and finally cool it to room temperature in water at 10 °C, then filter, wash with water and dry.

[0077] The preparation method of a tungsten alloy material in this example includes the following steps: successively stir and mix tungsten powder, copper powder, nickel powder, modified cerium oxide, and pure praseodymium powder raw materials, mix well, then add them into a mold and press into shape, the pressing pressure is 25 MPa, the pressing time is 10 min, after pressing, hot press and sinter at 1300 °C for 2 h, the sintering pressure is 5 Mpa, after sintering, finally perform ultrasonic dispersion treatment in the treatment modification solution, the ultrasonic power is 200 W, the ultrasonic time is 20 min, after ultrasonic treatment, wash with water and dry, then perform heat treatment at 1200 °C for 20 min, and finally restore to room temperature to obtain the tungsten alloy of the present invention.

[0078] Application of a tungsten alloy material in this embodiment in preparing a clock plumb

[0079] Example 3.

[0080] A tungsten alloy material in this embodiment comprises raw materials in the following parts by weight:

[0081] 90 parts of tungsten powder, 4.5 parts of copper powder, 2 parts of nickel powder, 1.5 parts of modified cerium oxide, 70 parts of treatment modification liquid, 3.5 parts of pure praseodymium powder.

[0082] The modification method of the modified cerium oxide in this embodiment is as follows:

[0083] S01: Feed cerium oxide into hydrochloric acid solution with 4.5 times amount, then add lanthanum chloride modification liquid accounting for 7.5% of the total amount of cerium oxide and 3.5% of sodium alkyl sulfonate, stir evenly, wash with water and dry;

[0084] S02: Add 3.5 parts of chitosan into 15 parts of sodium alginate solution with a mass fraction of 10%, add 2.5 parts of sodium carboxymethyl cellulose and 2.5 parts of pentadecylphenol, stir fully to obtain an additive;

[0085] S03: Add the additive into S01, stir fully, and finally wash with water and dry to obtain modified cerium oxide.

[0086] The mass fraction of the hydrochloric acid solution in this embodiment is 7.5%.

[0087] The lanthanum chloride modification liquid in this embodiment comprises raw materials in the following parts by weight: 7.5 parts of lanthanum chloride, 2.5 parts of paracetamol, 12.5 parts of deionized water, 2.5 parts of phosphate buffer solution.

[0088] The pH value of the phosphate buffer solution in this embodiment is 5.2.

[0089] The preparation method of the treatment modification liquid in this embodiment is as follows:

[0090] S11: First, thermally improve bentonite, then cool it to room temperature, and then feed it into 5 - 10 times of deionized water and stir evenly;

[0091] S12: Add 2 parts of silane coupling agent into 12.5 parts of hydrochloric acid aqueous solution, and then add 3.5 parts of sodium phenolsulfonate, stir evenly to obtain an additive;

[0092] S13: Add 20 parts of the additive into 35 parts of S11, stir at a speed of 750 r / min for 30 min, the stirring temperature is 50 °C, after stirring ends, wash with water and dry to obtain the treatment modification liquid; the mass fraction of the hydrochloric acid aqueous solution is 7.5%; the silane coupling agent is coupling agent KH560.

[0093] The steps for the thermal improvement treatment of bentonite in this embodiment are as follows: First, heat it to 355°C at a rate of 2°C / min, then keep it warm for 7.5 min, then heat it to 505°C at a rate of 5°C / min, continue to keep it warm for 5 min, and finally cool it to room temperature in water at 7.5°C, then filter, wash with water, and dry, and that's it.

[0094] A preparation method of a tungsten alloy material in this embodiment includes the following steps: successively stir and mix tungsten powder, copper powder, nickel powder, modified cerium oxide, and pure praseodymium powder raw materials until fully mixed, then add them into a mold and press them into shape. The pressing pressure is 22.5 MPa, and the pressing time is 7.5 min. After pressing, hot press and sinter at 1235°C for 1.5 h, and the sintering pressure is 3.5 Mpa. After sintering, finally perform ultrasonic dispersion treatment in a treatment modification liquid, with an ultrasonic power of 150 W and an ultrasonic time of 15 min. After ultrasonic treatment, wash with water and dry, then perform heat treatment at 1100°C for 15 min, and finally restore to room temperature to obtain the tungsten alloy of the present invention.

[0095] An application of the tungsten alloy material in this embodiment in the preparation of a clock plumb.

[0096] Comparative Example 1.

[0097] The difference from Example 3 is that cerium oxide is used instead of modified cerium oxide.

[0098] Comparative Example 2.

[0099] The difference from Example 3 is that the modification method of modified cerium oxide is different; no additive is added.

[0100] Comparative Example 3.

[0101] The difference from Example 3 is that lanthanum chloride modification liquid is not added during the modification of modified nano-bismuth trioxide.

[0102] Comparative Example 4.

[0103] The difference from Example 3 is that paracetamol is not added to the lanthanum chloride modification liquid.

[0104] Comparative Example 5.

[0105] The difference from Example 3 is that the treatment modification liquid is not added.

[0106] Comparative Example 6.

[0107] The difference from Example 3 is that bentonite is not added during the preparation of the treatment modification liquid.

[0108] The performance tests of the products of Examples 1 - 3 and Comparative Examples 1 - 6 are as follows:

[0109]

[0110] As can be seen from Examples 1-3 and Comparative Examples 1-6, the product of Example 3 of the present invention has excellent operating duration multiples, elongation rates, and tensile strengths, and the product properties are coordinately improved with each other;

[0111] As can be seen from Comparative Examples 1-4, when cerium sesquioxide is used instead of modified cerium sesquioxide, the performance of the product shows a deteriorating trend. At the same time, due to different modification methods of modified cerium sesquioxide, when no additive is added, or lanthanum chloride modification solution is not added during the modification of modified nano-bismuth sesquioxide, the performance of the product all shows a deteriorating trend. For the modified cerium sesquioxide prepared by the method of the present invention, the product performance has an enhancing effect;

[0112] In addition, when a treatment modification solution is added to the product of the present invention, the improvement effect of the product is synergistic. The treatment modification solution is combined with the modified cerium sesquioxide of the raw material, and the performance of the product is significantly improved.

[0113] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0114] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tungsten alloy material, It is characterized in that The invention comprises the following raw materials in parts by weight: 90-95 parts of tungsten powder, 3-6 parts of copper powder, 1-3 parts of nickel powder, 1-2 parts of modified cerium trioxide, 65-75 parts of treatment modification liquid, 2-5 parts of pure praseodymium powder; The modification method of the modified cerium trioxide is: S01: Add cerium trioxide into 4-5 times hydrochloric acid solution, then add 5-10% of lanthanum chloride modification liquid and 2-5% of sodium alkyl sulfonate to the total amount of cerium trioxide, stir evenly, wash with water and dry; S02: adding 2-5 parts of chitosan to 10-20 parts of 10% sodium alginate solution by mass, adding 1-4 parts of sodium carboxymethyl cellulose and 1-4 parts of pentadecylphenol, stirring sufficiently to obtain an additive; S03: adding the additive to S01, stirring sufficiently, and finally washing with water and drying to obtain modified cerium trioxide; The lanthanum chloride modified solution comprises the following raw materials in parts by weight: 5-10 parts of lanthanum chloride, 1-4 parts of acetaminophen, 10-15 parts of deionized water, and 1-4 parts of phosphate buffer solution; The preparation method of the treated modified liquid is: S11: The bentonite is first subjected to thermal treatment, then cooled to room temperature, and then placed in 5-10 times deionized water and stirred evenly; S12: adding 1-3 parts of a silane coupling agent to 10-15 parts of a hydrochloric acid aqueous solution, and then adding 2-5 parts of sodium phenolsulfonate, stirring evenly to obtain an additive; S13: Add 15-25 parts of additives to 30-40 parts of S11, stir at a speed of 500-1000r / min for 25-35min, and the stirring temperature is 45-55°C. After the stirring is completed, wash with water and dry to obtain a treated modified liquid; the mass fraction of the hydrochloric acid aqueous solution is 5-10%; the silane coupling agent is coupling agent KH560.

2. A tungsten alloy material according to claim 1, It is characterized in that The tungsten alloy material is the following raw materials by weight: 90 parts of tungsten powder, 4.5 parts of copper powder, 2 parts of nickel powder, 1.5 parts of modified cerium trioxide, 70 parts of treated modification liquid, and 3.5 parts of pure praseodymium powder.

3. A tungsten alloy material according to claim 1, It is characterized in that The mass fraction of the hydrochloric acid solution is 5-10%.

4. A tungsten alloy material according to claim 1, It is characterized in that The pH value of the phosphate buffer solution is 5.0-5.

5.

5. A tungsten alloy material according to claim 1, It is characterized in that The steps of the bentonite thermal improvement treatment are: firstly heating to 350-360°C at a rate of 1-3°C / min, then keeping the temperature for 5-10min, then heating to 500-510°C at a rate of 5°C / min, keeping the temperature for 10-20min, and finally cooling to room temperature in 5-10°C water, filtering, washing and drying.

6. A method for preparing the tungsten alloy material according to any one of claims 1 to 5, It is characterized in that It includes the following steps: successively stir and mix tungsten powder, copper powder, nickel powder, modified cerium oxide, and pure praseodymium powder raw materials until fully mixed, then add them into a mold for molding. The molding pressure is 20 - 25 MPa, and the molding time is 5 - 10 min. After molding, perform hot pressing sintering at 1230 - 1300 °C for 1 - 2 h, and the sintering pressure is 2 - 5 Mpa. After sintering, finally perform ultrasonic dispersion treatment in a treatment modification liquid. The ultrasonic power is 100 - 200 W, and the ultrasonic time is 10 - 20 min. After ultrasonic treatment, wash with water and dry, then perform heat treatment at 1000 - 1200 °C for 10 - 20 min, and finally return to room temperature to obtain a tungsten alloy.

7. Application of the tungsten alloy material according to any one of claims 1 - 5 in the preparation of a clock plumb bob.

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