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Anticorrosive wearable electrodeposit clad layer of Ni-W-P ternary alloy and manufacturing technique and electroplate liquid thereof

A ternary alloy, anti-corrosion and wear-resistant technology, applied in the field of electrochemistry and metal surface treatment, can solve the problems of heavy equipment corrosion, poor coating performance, Ni-W-P alloy electroplating is not widely used in production, etc. Less corrosion, less damage to equipment and human body

Active Publication Date: 2009-06-03
湖南纳菲尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the phosphorous acid systems reported in the literature are used in acidic conditions, which cause serious corrosion to equipment and poor coating performance.
This is also an important reason why Ni-W-P alloy plating is not widely used in production

Method used

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  • Anticorrosive wearable electrodeposit clad layer of Ni-W-P ternary alloy and manufacturing technique and electroplate liquid thereof
  • Anticorrosive wearable electrodeposit clad layer of Ni-W-P ternary alloy and manufacturing technique and electroplate liquid thereof
  • Anticorrosive wearable electrodeposit clad layer of Ni-W-P ternary alloy and manufacturing technique and electroplate liquid thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ① Plating solution configuration

[0028] Add clear water into the electroplating tank, heat to 50°C-60°C, then add 0.09mol / L sodium tungstate, 0.14mol / L sodium citrate, and 0.1mol / L citric acid, and stir to dissolve. Then add nickel sulfate 0.08mol / L, phosphorous acid 0.24mol / L, boric acid 0.48mol / L, stir to dissolve, adjust the pH value to 7.0 with ammonia water and sodium hydroxide, add water to make up to volume, and finally heat the solution to 75°C Then you can try plating.

[0029] ② Pretreatment of the workpiece

[0030] The workpiece material is low carbon steel, which has been derusted, degreased and activated.

[0031] ③ Plating

[0032] After the workpiece is pretreated, it is placed in the electroplating tank, and the current density is 70mA / cm 2 Under electroplating, time 1.5h. After plating, rinse and blow dry.

[0033] ④ Hydrogen removal

[0034] The plated workpiece was kept at 200°C for 2h.

[0035] ⑤ inspection

[0036] First check whether th...

Embodiment 2

[0046] ① Plating solution configuration

[0047] First add clear water to the electroplating tank, heat to 50°C-60°C, then add 0.09mol / L sodium tungstate, 0.14mol / L sodium citrate, and 0.1mol / L citric acid, and stir to dissolve. Then add nickel sulfate 0.08mol / L, phosphorous acid 0.12mol / L, stir to dissolve, use ammonia water and sodium hydroxide to adjust the pH value to 6.5, add water to make up the volume, and finally heat the solution to 75°C before trial plating.

[0048] ② Pretreatment of the workpiece

[0049] The workpiece material is low carbon steel, which has been derusted, degreased and activated.

[0050] ③ Plating

[0051] After the workpiece is pretreated, it is placed in the electroplating tank. At a current density of 70mA / cm 2 Under electroplating, time 1.5h. After plating, rinse and blow dry.

[0052] ④ Hydrogen removal

[0053] The plated workpiece was kept at 200°C for 2h.

[0054] ⑤ inspection

[0055] The composition of the Ni-W-P coating obtained...

Embodiment 3

[0057] ① Plating solution configuration is the same as Example 1

[0058] ② Pretreatment of the workpiece

[0059] The workpiece material is brass, which has been derusted, degreased and activated.

[0060] ③ Plating

[0061] After the workpiece is pretreated, it is placed in the electroplating tank. Electroplating current density 70mA / cm 2 Under electroplating, time 1.5h. After plating, rinse and blow dry.

[0062] ④ Hydrogen removal

[0063] The finished workpiece is de-insulated at 200°C for 2 hours.

[0064] ⑤ inspection

[0065] The coating obtained in this embodiment is bright and dense, and has good bonding force, corrosion resistance and wear resistance.

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Abstract

The invention relates to an anticorrosive wearable electrodeposit clad layer of Ni-W-P ternary alloy and manufacturing technique and electroplates liquid thereof, which takes the nickel sulfate, sodium tungstate, phosphate as the main material, electrically depositing the Ni-WP amorphous mixture of amorphous or nanocrystalline alloy coating. The characteristics of the electroplate technique are following: corrosive solution is very small, the entire production of the use of cleaner production, less emissions, in line with the requirements of sustainable production. W of the coating for the content of 1-45wt%, P content of 0.1-5wt%, nickel is the residue. The plating layer is bright and dense; the hardness is 400-1100Hv, which is resistant to acid, alkali, salt and hydrogen sulfide corrosion, wear resistance is better than or equivalent to chrome plating, can not only replace decorative chromium or hard chromium is widely used, and can be used for oil field exploration equipment to deal with wear-resistant anti-corrosion.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and metal surface treatment, and relates to a Ni-W-P ternary alloy anti-corrosion and wear-resistant coating obtained by electrodeposition in an aqueous solution, an electrodeposition production process and an electroplating solution composition. Background technique [0002] Chromium plating has been widely used in various fields for a long time due to its advantages such as high hardness and beautiful color. But as we all know, chromium (Cr 6+ ) Salt is highly toxic, seriously pollutes the environment, destroys the ecological balance, and harms the health of the staff. It is one of the most serious environmental pollution and one of the most harmful heavy metals to human health; The disadvantages of the plating solution, such as high corrosiveness, poor dispersion ability, low current efficiency, and difficult disposal of the three wastes, have begun to face the fate of being eliminate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
Inventor 何凤娇鞠辉
Owner 湖南纳菲尔新材料科技股份有限公司
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