摘要
本文简述了高强韧WC-Co硬质合金的发展方向,介绍了等离子球磨新技术的基本原理和方法,总结了近年来基于等离子球磨技术的"碳化烧结一步法"在制备高性能WC-Co硬质合金中的进展。等离子球磨制备硬质合金表现出3点优势:(1)显著提高了W与C反应的活性,极大地降低了WC的合成温度,有望采用"碳化烧结一步法"制备WC-Co硬质合金,简化制备工艺流程,实现节能降耗;(2)等离子球磨有利于形成板状结构的WC晶粒,并且能够较方便地控制WC的形态,为设计和调控WC-Co硬质合金的组织创造了很大的空间;(3)利用等离子球磨方法制备WC-Co硬质合金适于普通烧结的规模生产技术,所得到的材料具有优异的强韧力学性能。
The development of WC-Co cemented carbide with high strength and toughness was briefly described in the present article.A recent developed milling method named as plasma milling and its basic principle were also introduced.And then,the application of "synchronous carbonization and sintering method" based on the plasma milling technology in the preparation of high-performance WC-Co cemented carbide was summarized in the paper.There are three advantages in the preparation of cemented carbide by plasma milling:(1) The reaction activity of W and C is greatly improved,and the synthesis temperature of WC is greatly reduced,which makes it possible to prepare WC-Co cemented carbide through "synchronous carbonization and sintering method",simplifies the preparation process and realizes energy saving and consumption reduction.(2) Plasma milling is beneficial to form plate-like structured WC grains and control the morphology of WC,which creates a large space for the design and control of the microstructure of WC-Co cemented carbide.(3) Plasma milling is suitable for large-scale production of WC-Co cemented carbide through common sintering,and the obtained WC-Co alloy has a good combination of strength and toughness.
作者
鲁忠臣
曾美琴
王为
朱敏
Lu Zhongchen;Zeng Meiqin;Wang Wei;Zhu Min(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou Guangdong 510640,China;School of Materials Science and Engineering,South China University of Technology,Guangzhou Guangdong 510640,China;Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,Guangzhou Guangdong 510640,China)
出处
《硬质合金》
CAS
2020年第1期1-18,共18页
Cemented Carbides
基金
广州市科技计划项目(201904020018)
广东省自然科学基金(05200618)
2012年广东省实验室体系建设项目(2012A061400002)
国家重点基础研究发展计划(973)(2010CB631300)。
