WC-Ni硬质合金组织结构与弱磁性研究  

Research on the Microstructure and Magnetism of WC-Ni Cemented Carbide

作　　者：何军浪 吴翔[1] 廖军[1] 魏连春 孙建春[2] He Junlang;Wu Xiang;Liao Jun;Wei Lianchun;Sun Jianchun(Zigong Cemented Carbide Co.Ltd,Zigong Sichuan 643011,China;College of Metallurgy and Materials Engineering of Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]自贡硬质合金有限公司,四川自贡643011 [2]重庆科技学院冶金与材料工程学院,重庆401331

出　　处：《硬质合金》2021年第4期244-249,共6页Cemented Carbides

基　　金：国家重点研发计划项目《三维磁调控系统研发》(2018YFC0115202);自贡硬质合金有限责任公司科研项目《镍基硬质合金相结构与磁性关联度研究》(2019011)。

摘　　要：镍基硬质合金因具有较好的耐蚀性、弱磁性、较低的价格等特点受到越来越多的重视,生产者和使用者都迫切希望弄清其磁性能具体参数。本文通过不同工艺制备了不同镍含量和配碳量的镍基硬质合金,对其组织结构与磁性能进行了分析。研究结果表明,镍基硬质合金混合料粉末均具有一定的弱磁性,但氢气脱蜡烧结后试样均无磁性,真空脱蜡试样存在磁性,其饱和磁化强度(M_(s))0.47~1.34 emu/g,矫顽力(H_(c))58.93~123.86 Oe;合金WC粒径越小,合金的矫顽力越大;镍粘结相数量越多,合金的磁性越强。Nickel based cemented carbide has been paid more and more attention due to its good corrosion resistance,weak magnetic and low price.Producers and users are eager to find out the specific parameters of its magnetic properties.In this paper,Ni based cemented carbide with different nickel content and carbon content was prepared by different preparation technology.The structure and magnetic properties of the cemented carbide were analyzed.The results show that the Ni based cemented carbide mixture powder has some weak magnetic properties,but the samples are non-magnetic after hydrogen dewaxing sintering,the vacuum dewaxing samples have magnetism,and their saturation magnetization(M_(S))is 0.47~1.34 emu/g,and the coercive force(H_(C))is 58.93~123.86 Oe;the smaller the WC Particle size,the greater the coercivity of the alloy;and the more the number of Ni bonding phases,the stronger the magnetic properties of the alloy.

关 键 词：镍基硬质合金 磁性 组织结构 研究 

分 类 号：TG135.5[一般工业技术—材料科学与工程]