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Refractory metal or stainless steel with electroplating layer on surface and refractory metal or stainless steel surface electroplating process

A technology of refractory metal and electroplating process, applied in the field of metal surface electroplating, can solve the problems of unsatisfactory effect, high equipment and energy consumption, difficult actual production, etc., to achieve industrial production, low equipment requirements, and good adhesion Effect

Active Publication Date: 2018-11-23
RAMBO TECH SHENZHEN LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the nature of refractory metals is very active, and a dense passivation film is easily formed on the surface of the refractory metal in both air and water.
In order to obtain a coating with better adhesion, it is necessary to destroy the passivation film before electroplating; but because the passivation speed of this type of metal is too fast, the passivation film will be regenerated immediately after being removed, so the Plating can be very difficult
[0004] In order to solve the above problems, some people electrolytically remove the titanium material first, and then electroplate to prepare the gold layer, but the effect is not very satisfactory; some people heat the tantalum material to 1900°C in a vacuum state, and then electroplate the gold layer after cooling, but The equipment and energy consumption required by this technology are relatively high, and it is difficult to apply to actual production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of electroplating process on the surface of refractory metal titanium comprises the following steps:

[0031] (1) Take the titanium sheet as the base material, and carry out the following pretreatment on the titanium sheet: first, use a phosphorus-containing cleaning agent for ultrasonic soaking treatment, the temperature is 70 ° C, and the time is 5 minutes, and then the titanium sheet is placed on the cathode for alkaline treatment. Electrolytic degreasing, the temperature is 70°C, the current density is 10ASD, and the time is 1min, then the titanium sheet is placed on the anode, and electrolytic removal is performed in the alkali solution to remove the loose structure layer on the surface of the substrate, the temperature is 70°C, the current The density is 1ASD, the time is 1min, and then activated by soaking in fluorine-containing acid solution for 1min at 25°C, and finally activated by cathodic electrolysis in fluorine-containing alkali solution for 2min, th...

Embodiment 2

[0034] An electroplating process on the surface of refractory metal tantalum, comprising the following steps:

[0035] (1) Take tantalum flakes as the base material, and carry out the following pretreatment on the tantalum flakes: first, use a phosphorus-containing cleaning agent for ultrasonic immersion treatment at a temperature of 70°C for 10 minutes, and then place the tantalum flakes on the cathode for alkaline Electrolytic degreasing, the temperature is 70°C, the current density is 10ASD, the time is 5min, then the tantalum sheet is placed on the anode, and electrolytic removal is performed in the alkali solution to remove the loose structure layer on the surface of the substrate, the temperature is 70°C, the current The density is 5ASD, the time is 5min, and then activated by immersion in fluorine-containing acid solution for 1min at 25°C, and finally cathodic electrolytic activation in fluorine-containing alkali solution for 2min, the temperature is 25°C, and the curren...

Embodiment 3

[0038] An electroplating process on the surface of refractory metal niobium, comprising the following steps:

[0039] (1) Take the niobium sheet as the base material, and carry out the following pretreatment to the niobium sheet: first, use a phosphorus-containing cleaning agent to carry out ultrasonic soaking treatment at a temperature of 70°C for 10 minutes, and then place the niobium sheet on the cathode for alkaline Electrolytic degreasing, the temperature is 70°C, the current density is 10ASD, the time is 5min, then the niobium sheet is placed on the anode, and electrolytic removal is performed in the alkali solution to remove the loose structure layer on the surface of the substrate, the temperature is 70°C, the current The density is 1ASD, the time is 1min, and then activated by soaking in fluorine-containing acid solution for 1min at 25°C, and finally activated by cathodic electrolysis in fluorine-containing alkali solution for 2min, the temperature is 25°C, and the cur...

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Abstract

The invention provides a kind of refractory metal or stainless steel with an electroplating layer on the surface. The refractory metal or the stainless steel comprises a base material and the electroplating layer formed on the surface of the base material. The base material comprises a refractory metal base material or a stainless steel base material, wherein the refractory metal base material ismade of titanium, or tantalum, or niobium, or other alloy; the electroplating layer comprises a rhodium-ruthenium alloy layer. The electroplating layer has good adhesive force, corrosion resistance and weldability, the welding capability of a refractory metal product is improved, and the refractory metal or the stainless steel is beneficial to industrial application. The invention further providesa refractory metal or stainless steel surface electroplating process.

Description

technical field [0001] The invention relates to the technical field of metal surface electroplating, in particular to a refractory metal or stainless steel with an electroplating layer on the surface, and an electroplating process for the surface of the refractory metal or stainless steel. Background technique [0002] Refractory metals such as titanium, tantalum, and niobium have good high-temperature strength, corrosion resistance, and processing plasticity, and are an important high-temperature structural material in industry. In electronic applications, although the properties of the material are excellent, due to the poor welding performance of this type of metal, it is necessary to coat the surface with a layer of other metals, so that the finished product can simultaneously exert high strength, corrosion resistance, light weight and weldability advantages. [0003] However, the properties of refractory metals are very active, and a dense passivation film is easily fo...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D5/10C25D5/12C25D5/38C25D5/36C25D5/50
CPCC25D3/567C25D5/10C25D5/12C25D5/36C25D5/38C25D5/50C25D3/56
Inventor 郭振华仇荣宗郭嘉宝黄国英
Owner RAMBO TECH SHENZHEN LTD
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