摘要
该文较系统地阐述钢结硬质合金的成分、组织和性能之间的关系,综述钢结硬质合金的主要制备方法,指出粉末冶金法是最常用的制备方法,而电冶熔铸、自蔓延高温合成(SHS)和碳热还原法等工艺因更低的成本和更优的性能而展现出蓬勃生机。此外,锻造和热处理能够有效改善组织,提高合金性能;渗硼、硼-硫复合渗和激光熔覆等表面处理能提高合金的表面硬度,减小摩擦因数,提高使用寿命。最后,展望钢结硬质合金的发展方向。
The relationship of the composition, microstructures and performance has been systematically elaborated. The main preparation technology of steel bonded carbide is summarized, and it is pointed that the powder metallurgy has been widely adopted to produce steel bonded carbide. However, due to the lower cost and better performance, electroslag melting and casting, self-propagating high temperature synthesis （SHS） and carbothermal reduction methods are full of vitality. In addition, forging and heat treatment can effectively improve the structure and performance of the alloy; Boriding, boron-sulphurizing treating process and laser cladding process can improve the surface hardness, reduce the friction coefficient and increase the service life. Finally, the development trend of steel bonded carbide is prospected.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2015年第5期661-669,共9页
Materials Science and Engineering of Powder Metallurgy
关键词
钢结硬质合金
界面结合
性能
制备工艺
热处理
表面强化
steel bonded cemented carbide
interface bonding
mechanical property
preparation technology
heat treatment
surface strengthening
