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Plasma composite plating and seeping method for abrasive-proof nickel base surface alloy layer

A surface alloy and composite plating technology, which is applied in metal material coating process, coating, superimposed layer plating, etc., can solve the problems of low infiltration coating and inability to improve the wear resistance of the plating infiltration layer, so as to improve the wear resistance The effect of improving corrosion resistance and hardness

Inactive Publication Date: 2007-08-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] The Chinese patent No. 02121428 provides a method of plating and infiltrating composite multi-component co-infiltration high-alloy nickel-based corrosion-resistant alloy, which solves the problem of the corrosion resistance of the nickel-based alloy formed on the surface of the 20 steel substrate, but the hardness of the infiltrated coating lower, HV only 0.1N 202, can not improve the wear resistance of the plating layer

Method used

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  • Plasma composite plating and seeping method for abrasive-proof nickel base surface alloy layer
  • Plasma composite plating and seeping method for abrasive-proof nickel base surface alloy layer

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example 1

[0032] Figure 1 is brush-plating Ni+amorphous SiO on the surface of 316L stainless steel 2 Nanoparticle composite coating, and then after plasma multi-component co-drilling nickel-based corrosion-resistant alloy, the formed amorphous SiO 2 Scanning electron micrograph of the nanoparticle-reinforced nickel-based surface alloy layer. The specific process parameters are: 1. Brush plating process: the power supply is positively connected (the workpiece is connected to the negative pole), the brush plating process voltage is 12V, the relative movement speed is 9m / min, and the nanoparticle content in the fast nickel plating solution is 20g / L; 2. The metal infiltration process is: source 1050V, workpiece voltage 250V, air pressure 35Pa, pole spacing 15mm, metal infiltration time 3h. Fig. 2 is the observation of the distribution of nanoparticles in the above-mentioned surface alloy layer by a transmission electron microscope. The SiO is clearly visible from the photo 2 The size of ...

example 2

[0034] Figure 3 is brush-plating Ni+Al on the surface of 316L stainless steel 2 o 3 Nanoparticle composite coating, and then after plasma multi-component co-drilling nickel-based corrosion-resistant alloy, the undissolved Al formed 2 o 3 + Ni formed in situ 3SEM image of Al nanoparticles reinforced Ni-based surface alloy layer. The specific process parameters are: 1. Brush plating process: the power supply is connected positively (the workpiece is connected to the negative pole), the brush plating process voltage is 12V, the relative motion speed is 9m / min, and the nanoparticle content in the fast nickel plating solution is 20g / L; 2. The metal infiltration process is: source 1050V, workpiece voltage 250V, air pressure 35Pa, pole spacing 15mm, metal infiltration time 3h. Figure 4 is the observation of the above-mentioned surface alloy layer by transmission electron microscopy, and the undissolved Al can be clearly seen from the photo 2 o 3 (black) + Ni formed in situ 3 A...

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Abstract

The invention relates to a process of preparing plasma composite depositing wear-resisting nickle- base surface alloy layer, belonging to field of surface composite wear- resisting gradient material preparation. It comprises preparation of nanometer oxidant particle composite coating layer, special granular variety selection and process of producing biglow multicomponent depositing nickle- base alloy on said coating layer. The invention is characterized in that the added nanometer oxidant is nonconductor, so it will not influence the corrosion resistant property of nickle- base alloy, and the rigidity of alloy layer is dramatically increased which is favourable for increasing corrosion resistant performance.

Description

technical field [0001] The invention provides a method for plasma composite plating infiltration and corrosion-resistant nickel-based surface alloy layer, which is suitable for the preparation field of advanced surface composite corrosion-resistant gradient materials, and involves the addition of particle material types and surface preparation processes of various advanced materials. system integration. Background technique [0002] Corrosive wear is a material loss phenomenon that occurs when a material is subjected to friction and undergoes chemical or electrochemical reactions with the environmental medium, referred to as abrasion. Corrosion-resistant and wear-resistant alloys must be able to withstand the synergistic damage of mechanical and electrochemical factors from the material design. The design ideas for the composition and structure of corrosion-resistant and wear-resistant alloys are different. Corrosion-resistant alloys usually add alloy elements to enhance t...

Claims

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Application Information

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IPC IPC(8): C23C28/00C25D5/06C25D3/12C23C8/36
Inventor 徐江徐重陶杰张平则刘子利陈哲源朱文慧骆心怡
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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