Rhodium plating technology of electric contact made of molybdenum copper composite material

A composite material and electric contact technology, which is applied in the rhodium-plating process field of electric contacts, can solve the problems of small size of electric contacts, and achieve the effects of low cost, favorable cost control and good oxidation resistance

Inactive Publication Date: 2016-11-30
成都立威讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, on the one hand, the overall volume of the electrical contact is small, and it is a difficult problem to overcome the uniform and stable conduction of the workpiece after electroplating the electrical contact; The bonding force of materials is another problem that needs to be overcome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The rhodium-plating process of the electrical contact made of a kind of molybdenum-copper composite material of this embodiment is used for the rhodium-plated surface of the electrical contact made of molybdenum-copper composite material, and the electrical contact is put into the plating basket to carry out the following sequentially step:

[0027] Step 1: chemical degreasing;

[0028] Step 2: descaling treatment;

[0029] Step three: activation treatment;

[0030] Step 4: electroless nickel flash plating;

[0031] Step 5: Electroless rhodium plating.

Embodiment 2

[0033] This embodiment is further optimized on the basis of the above embodiments. Further, in order to better realize the present invention, the chemical rhodium plating in the step 6 specifically refers to: putting the plating basket equipped with electrical contacts into the rhodium plating solution and continuously shake the plating basket, the electrical contacts completely submerged in the rhodium plating solution are electroless plated in the rhodium plating solution for 3-20min.

[0034] Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 3

[0036] The present embodiment is further optimized on the basis of the foregoing embodiments. Further, for better realization of the present invention, the rhodium plating solution is mainly prepared from rhodium salts, chelating agents, reducing agents, stabilizers, and pH regulators. Wherein the mass concentration of rhodium ions is 1-3g / L, and the pH value is 1-2.

[0037] Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

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Abstract

The invention discloses a rhodium plating technology of an electric contact made of a molybdenum copper composite material, and the technology is used for rhodium plating on the surface of the electric contact made of a molybdenum copper composite material. The electric contact is put into a plating basket to carry out the following steps in order: 1. chemical degreasing; 2. scale removal treatment; 3. activation treatment; 4. chemical flash plating of nickel; and 5. chemical plating of rhodium. The rhodium plating layer is uniformly distributed on the surface of the electric contact made of the molybdenum copper composite material and is well combined.

Description

technical field [0001] The invention relates to the field of noble metal electroplating for semiconductor materials, in particular to a rhodium-plating process for electrical contacts made of molybdenum-copper composite materials. Background technique [0002] The advantages of coating the protective film on the surface of the electrical contact are increasingly being paid attention to. If the surface of the electrical contact can be plated with rhodium, a thin film can be formed on the surface of the electrical contact to prevent the oxidation of the electrical contact. The rhodium-plated layer has a lower Excellent contact resistance and strong corrosion resistance can ensure that the electrical contacts maintain good and stable working performance during use. [0003] However, on the one hand, the overall volume of the electrical contact is small, and it is a difficult problem to overcome the uniform and stable conduction of the workpiece after electroplating the electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/18C23C18/32C23C18/44
CPCC23C18/44C23C18/1837C23C18/32
Inventor 杨素贤
Owner 成都立威讯科技有限公司
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