A nickel-based chromium carbide powder and a method for producing the same, a coating

By forming nickel-based chromium carbide powder through a pre-alloying process, the problem of insufficient wear resistance when chromium carbide replaces tungsten carbide is solved, and the wear resistance and high-temperature oxidation resistance are improved, thereby reducing production costs.

CN122400577APending Publication Date: 2026-07-17CHENGDU DAGUANG NEW MATERIAL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU DAGUANG NEW MATERIAL CO LTD
Filing Date
2026-06-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When existing nickel-based alloy powders use chromium carbide to replace tungsten carbide, it is difficult to maintain wear resistance, the cost is high, and the product life is insufficient in high-temperature environments.

Method used

Nickel-based chromium carbide powder is formed through a pre-alloying process, including sintering, cooling, and atomization powdering steps. This process controls the diffusion and metallurgical bonding of chromium carbide and nickel, forming a nickel-based alloy coating layer. This inhibits the dissolution and phase transformation of chromium carbide, maintains its original hard particle morphology, and improves wear resistance.

Benefits of technology

It significantly improves the wear resistance and high-temperature oxidation resistance of nickel-based chromium carbide powder, reduces production costs, and extends the service life of products in high-temperature environments.

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Abstract

本发明涉及合金粉末领域,用以解决现有在采用碳化铬替代碳化钨时,难以确保耐磨性的问题,提供了一种镍基碳化铬粉末及其制备方法、涂层。一种镍基碳化铬粉末的制备方法,包括以下步骤:S100、碳化铬与镍通过烧结工序、冷却工序和粉碎工序后,制得预合金化颗粒;S200、将预合金化颗粒投入金属液后,通过雾化制粉工序制得镍基碳化铬粉末;所述金属液含有镍。本发明中镍与碳化铬通过烧结后形成预合金化的大颗粒,使镍与碳化铬颗粒表面发生扩散和冶金结合,形成一层镍基合金包覆层,不仅可改善碳化铬与金属液的润湿性,还减少了碳化铬的溶解、析出和再结晶过程,使得碳化铬在金属液中尽可能保持原有的晶型,进而确保产品的耐磨性。
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