Alloy solid solution, preparation method, hard alloy and application

By preparing an alloy solid solution of tantalum oxide, titanium carbonitride, tungsten carbide, carbon black, cobalt, chromium nitride, trace metals and rare earth elements, the problem of uneven preparation of tungsten-titanium-tantalum-cobalt cemented carbide in the prior art has been solved. This has resulted in an alloy solid solution with high purity, good toughness and strong wear resistance, which significantly improves the hot hardness and thermal shock resistance of cemented carbide.

CN121087342AInactive Publication Date: 2025-12-09CHANGSHA WEIHUI HIGH-TECH NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202511640734.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-11
Publication Date
2025-12-09
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing methods for preparing tungsten-titanium-tantalum-cobalt cemented carbides are difficult to achieve uniform mixing, leading to performance degradation and an inability to simultaneously achieve both thermal hardness and impact energy.

Method used

A single-phase alloy solid solution is prepared by using an alloy solid solution of tantalum oxide, titanium carbonitride, tungsten carbide, carbon black, cobalt, chromium nitride, trace metals and rare earth elements. The solid solution is prepared by solution treatment, degreasing, vacuum impurity removal and sintering steps to form a single-phase alloy solid solution.

Benefits of technology

It improves the purity and toughness of the alloy solid solution, enhances hardness and wear resistance, and improves the thermal shock resistance and hot hardness of cemented carbide.

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Abstract

The invention relates to the technical field of hard alloy materials, in particular to an alloy solid solution, a preparation method, hard alloy and application. The alloy solid solution is prepared from the following raw materials in parts by weight: 15 to 17 parts of tantalum oxide, 15 to 30 parts of titanium carbonitride, 45 to 60 parts of tungsten carbide, 1 to 4 parts of carbon black, 5 to 10 parts of cobalt, 0.1 to 0.7 part of chromium nitride, 0.01 to 0.1 part of trace metal and 0.001 to 0.003 part of rare earth; the trace metal comprises at least one of indium, tin and copper sources. The alloy solid solution provided by the invention is prepared from tantalum oxide, titanium carbonitride, tungsten carbide, carbon black, cobalt and chromium nitride, and has the advantages of high purity, good toughness, high hardness, wear resistance, high temperature resistance and the like.
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