Abrasion-resistant layer and preparation method thereof
By forming a three-layer zinc-iron coating with a Fe content gradient from the surface and the inner part on the carbon steel component, the problem of difficulty in achieving wear resistance and corrosion resistance at the same time in the prior art is solved, and an efficient, environmentally friendly and low-cost anti-wear effect is achieved.
Patent Information
- Application Number
- CN202510201700.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to achieve good wear resistance and corrosion resistance in carbon steel components such as power tools, especially in high temperature, high humidity, high chlorine and high wind environments, the hot-dip galvanized layer is neither corrosion-resistant nor wear-resistant.
The Fe content gradient in the surface and inner plating layers is used to form the performance gradient of the three-layer structure. Specifically, it includes depositing a passivation layer on the substrate, a first zinc iron layer (Zn-Fe in an η phase, an iron content of 0.03 to 1.0 wt%) and a second zinc iron layer (Zn-Fe in an γ phase, an iron content of 5 to 30 wt%), and adjusting the iron content in the deposited layer through different multivariate complexing systems.
It achieves good wear resistance and corrosion resistance of the abrasion layer, and can improve the service capacity of carbon steel components such as power tools in abrasion conditions, and also has the advantages of environmental protection and low cost.