Method for electroplating nickel rare earth-titanium diboride composite coating

A titanium diboride and composite coating technology, which is applied in coatings, electrolytic coatings, etc., can solve the problem of no nickel rare earth-titanium diboride composite coating, etc., and achieve the effect of improving wear resistance

Inactive Publication Date: 2009-01-21
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nickel rare earth alloy coating is mixed with solid titanium diboride particles, which can improve the coating's wear resistance, corrosion resis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 5g of titanium diboride particles with a particle size of 5 μm in a 100mL beaker, add 10mL of acetone, stir for 5min, filter with suction, put the titanium diboride particles in a 100mL beaker, add 6mol L -1 10mL of hydrochloric acid solution, soaked for 0.2h, filtered with suction, washed with water until neutral, and dried in an oven at 50°C for 5h. Weigh 2.9320g of lanthanum oxide in a 100mL small beaker, add 15mL of hydrochloric acid with a mass concentration of 37% under stirring, heat to dissolve it, and after it cools, transfer it to a 50mL volumetric flask and dilute to the mark with water. The concentration of lanthanum in the solution is 50g / L. Add 250g of nickel sulfate, 30g of nickel chloride, and 25g of boric acid into a 2L beaker, add 985mL of water to dissolve, add 1mL of the above-mentioned solution with a concentration of lanthanum of 50g / L, and form a mixed solution of nickel sulfate-nickel chloride-boric acid-lanthanum chloride , adjust the pH ...

Embodiment 2

[0020] Weigh 50g of titanium diboride particles with a particle size of 100nm in a 200mL beaker, add 50mL of acetone, stir for 5min, filter with suction, put the titanium diboride particles in a 200mL beaker, add 2mol L -1 50mL of hydrochloric acid solution, soak for 1h, filter with suction, wash with water until neutral, and dry in an oven at 100°C for 0.5h. Weigh 1.1664g of neodymium oxide in a 100mL small beaker, add 6mL of concentrated nitric acid under stirring, heat to dissolve it, and after it cools down, transfer it to a 50mL volumetric flask and dilute to the mark with water. The concentration of neodymium in the solution is 20g / L. Add 300g of nickel sulfate, 60g of nickel chloride, and 50g of boric acid in a 2L beaker, add 935mL of water to dissolve, add 50mL of the solution with a concentration of 20g / L of neodymium, and form a mixed solution of nickel sulfate-nickel chloride-boric acid-neodymium nitrate, Adjust the pH of the solution to 6 with sodium bicarbonate s...

Embodiment 3

[0022] Weigh 25g of titanium diboride particles with a particle size of 1 μm in a 100mL beaker, add 25mL of acetone, stir for 5min, filter with suction, put the titanium diboride particles in a 100mL beaker, add 4mol L -125mL of hydrochloric acid solution, soaked for 0.4h, filtered with suction, washed with water until neutral, and dried in an oven at 80°C for 2h. Weigh 5.7981g of samarium oxide in a 100mL small beaker, add 30mL of concentrated nitric acid under stirring, heat to dissolve it, and after it cools down, transfer it to a 100mL volumetric flask and dilute to the mark with water. The concentration of samarium in the solution is 50g / L; Weigh 5.7631g of gadolinium oxide in a 100mL small beaker, add 30mL of concentrated nitric acid under stirring, heat to dissolve it, after it cools down, transfer it to a 100mL volumetric flask, dilute to the mark with water, the solution Medium gadolinium concentration is 50g / L. Add 300g of nickel sulfate, 60g of nickel chloride, and...

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Abstract

The invention discloses a method for electroplating a nickel rare earth-titanium diboride composite plating coat. The method comprises the following steps: (a) titanium diboride microparticle is cleaned by acetone and then is soaked in a hydrochloric acid solution so as to carry out sucking filtration; then the titanium diboride microparticle is washed to neutrality by water and is dried; (b) a rare earth oxide is dissolved in acid so as to be prepared into rare earth salt solution with the concentration of rare earth of between 20 and 50 g/L; (c) aqueous solution of nickel sulfate, nickel chlorite and boric acid is added in the rare earth salt solution, and the pH value of the solution is adjusted so as to prepare nickel sulfate-nickel chlorite-boric acid-rare earth salt mixed solution; (d) the titanium diboride microparticle and the mixed solution of the nickel sulfate-nickel chlorite-boric acid-rare earth salt are mixed with a surface-active agent and then are ground and stirred inside a mortar; and the mixture is treated by ultrasonic wave so as to prepare an electroplate liquid; and (e) a plating part is put in the electroplate liquid so as to carry out electroplating. The nickel rare earth-titanium diboride composite plating coat obtained by electroplating has obviously increased hardness and abrasion resistance.

Description

technical field [0001] The invention relates to a method for electroplating a composite coating, in particular to a method for electroplating a nickel rare earth-titanium diboride composite coating. Background technique [0002] Composite coating is to add insoluble solid particles to the ordinary plating solution and make them fully suspended in the plating solution, or take necessary measures to reasonably arrange the particles on the surface of the substrate, and at the same time to reduce the metal ion cathode, the particles can be wrapped. The process of covering it into the coating. This special coating mixed with solid particles is a composite coating. The composite coating is to strengthen the properties of the original metal coating while maintaining the properties of the original matrix metal coating, and to modify the original coating, which can obtain wear resistance, corrosion resistance, catalysis, magnetic conductivity, photocatalytic activity, point Contact...

Claims

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Application Information

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IPC IPC(8): C25D15/00
Inventor 刘小珍陈捷
Owner SHANGHAI INST OF TECH
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