A method for preparing fine-grain high-strength high-specific-gravity tungsten alloy based on special tungsten powder
Special tungsten powder was prepared by liquid-liquid doping process and wet chemical method, which solved the problems of abnormal growth of tungsten grains and uneven distribution of binder phase in tungsten alloys, and realized fine-grained high-density tungsten alloy with high strength and toughness, which is suitable for mass production.
CN122406014APending Publication Date: 2026-07-17HENAN UNIV OF SCI & TECH +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN UNIV OF SCI & TECH
- Filing Date
- 2026-05-26
- Publication Date
- 2026-07-17
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Figure CN122406014A_ABST
Abstract
本发明公开了一种基于特种钨粉的细晶高强高比重钨合金制备方法，包括以下步骤：配制钨化合物、钼化合物、硝酸锆的混合水溶液，然后加热至沸腾，恒温搅拌生成沉淀物；将沉淀物干燥、粉碎得到特种钨粉的前驱粉体；将前驱粉体在氢气气氛下进行两阶段还原得到超细、均匀的特种钨粉；将得到的粉末与镍、铁、钴、锰进行球磨混粉；最后压制成型与烧结；通过液液掺杂工艺，使W、Mo、Zr三种元素在液相中以离子形式实现分子级别的均匀混合，从根本上解决了传统粉末冶金法的成分偏析问题，整个工艺过程为湿化学法，易于控制，适合规模化生产，所得产品性能一致性好。
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