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等离子表面Mo-Cr低合金高速钢的摩擦学特性

Frication properties study on plasma surface alloying Mo-Cr low-alloy HSS

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【Author】 XU Jin-yong~(1,2),DU Li~2,LIU Yan-ping~1,WANG Jian-zhong~1,KUI Xiao-yun~1,GAO Yuan~1,XU Zhong~1(1.Research Institute of Surface Engineering,Taiyuan University of Technology, Taiyuan 030024,Chain;2.Dept.of Electronic Machinery and Transportation Engineering,Guilin University of Electronic Technology,Guilin 541004,Chain)

【机构】太原理工大学表面工程研究所；桂林电子科技大学机电与交通工程系；太原理工大学表面工程研究所山西太原030024；广西桂林541004；山西太原030024；

【摘要】为了研究Q235钢表面冶金形成Mo-Cr低合金高速钢的摩擦学特性,利用双层辉光离子渗金属技术,在Q235钢表面进行Mo-Cr共渗,随后进行超饱和渗碳、淬火及回火复合处理.研究结果表明:Mo-Cr共渗层厚度在100μm以上,表面Mo含量可达20%,Cr含量达到10%,超饱和渗碳表面含碳量超过2.0%,表面成分接近钼系高速钢.淬火及回火后表面硬度达到1300HV,超过一般冶金高速钢.磨损试验表明,摩擦系数随着接触应力的增加而增大,平均相对耐磨性是GCr15渗碳淬火钢的2.2倍.更多还原

【Abstract】 This article is to discuss wear properties of the Mo-Cr low-alloy high speed steel(HSS).Mo-Cr penetrating layer on Q235 steels are built up by double glow plasma surface metallurgy and then ultra-saturated carbonization,quenching and low tempering were made.Results indicated that,the depth of coating is over 100 μm,and the contents of Mo、Cr in the surface alloying are 20% and 10%.Then ultra-saturated carbonization alloyed component is similar to molybdenum HSS with surface carburizing 2.0% above.After quenching and low tempering,it was found that the hardness of surface alloying is up to 1300HV.The hardness value is higher than that of metallurgy HSS.The abrasion experimental results showed that the sliding friction coefficient of the sample is increased with the stress and the average wearability is 2.2 times in comparison with GCr15 carburized and quenched.更多还原

【关键词】低合金高速钢；等离子；碳化物；摩擦系数；耐磨性；
【Key words】 low-alloy high speed steel； plasma； carbide； friction coefficient； wear resistance；

【基金】国家自然科学基金和上海宝钢集团公司联合资助项目(50374050);山西省自然科学基金资助项目(20031050)

【文献出处】材料科学与工艺 ,Materials Science and Technology , 编辑部邮箱 ,2006年04期

【分类号】TG174
【被引频次】1
【下载频次】141

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