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Method for improving corrosion resisting performance of palladium film on surface of stainless steel and palladium film

A stainless steel and corrosion-resistant technology, which is applied to a method and a palladium film layer to improve the corrosion resistance of the palladium film layer on the surface of the stainless steel, can solve problems such as economic loss in industrial production, equipment damage, stainless steel corrosion, etc., and achieves improved corrosion resistance, The effect of improving corrosion resistance and self-corrosion potential

Inactive Publication Date: 2017-05-31
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some special environments, stainless steel will still corrode, which will damage the equipment and bring huge economic losses to industrial production.

Method used

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  • Method for improving corrosion resisting performance of palladium film on surface of stainless steel and palladium film
  • Method for improving corrosion resisting performance of palladium film on surface of stainless steel and palladium film
  • Method for improving corrosion resisting performance of palladium film on surface of stainless steel and palladium film

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Embodiment Construction

[0012] The following will combine figure 1 The method for improving the corrosion resistance of the palladium film layer on the stainless steel surface and the palladium film layer of the present invention are further described in detail.

[0013] In a preferred embodiment of the present invention, the process flow of plating a palladium film on the surface of stainless steel is: inspection before electroplating → organic solvent degreasing → chemical degreasing → hot water washing → pure water washing → activation → pure water washing → electroplating → cold water washing → pure Water washing → drying → heat treatment → packaging.

[0014] 1) Organic solvent degreasing

[0015] Aviation gasoline is used for degreasing, and after natural cooling, it is transferred to the next process.

[0016] 2) Chemical degreasing

[0017] The chemical degreasing solution composition and process parameters are shown in Table 1:

[0018] Table 1 Chemical degreasing process

[0019]

[0020] 3) Electrop...

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Abstract

The invention relates to a method for improving corrosion resisting performance of a palladium film on the surface of stainless steel and the palladium film. The method comprises the steps that after the palladium film is plated to the surface of the stainless steel, the palladium film on the surface of the stainless steel is subjected to heat treatment in the inert gas atmosphere or vacuum environment; and according to technological parameters, the temperature ranges from 200 DEG C to 600 DEG C, and time ranges from 1h to 4 h. According to the method for improving corrosion resisting performance of the palladium film on the surface of stainless steel and the palladium film, the self-corrosion potential of the palladium film on the surface of the stainless steel in an inoxidizability medium is further improved, and the corrosion resisting performance is further improved.

Description

Technical field [0001] The invention relates to material surface treatment technology, in particular to a method for improving the corrosion resistance of a palladium film layer on a stainless steel surface and a palladium film layer. Background technique [0002] The good corrosion resistance and machining performance of stainless steel make it widely used in many industries. However, in some special environments, stainless steel will still corrode, causing damage to the equipment and bringing huge economic losses to industrial production. Among them, high-temperature dilute sulfuric acid and high-temperature acetic acid are two typical special environments. Palladium plating on the surface of stainless steel can increase the self-corrosion potential of stainless steel in non-oxidizing media, thereby improving the corrosion resistance of stainless steel. Summary of the invention [0003] The purpose of the present invention is to provide a method for improving the corrosion res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/50C25D3/50
CPCC25D3/50C25D5/50
Inventor 鞠鹏飞左禹苏培博赵旭辉唐聿明唐鋆磊
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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