Boronizing Mechanism for Cemented Carbides and Their Wear Resistance
Embedded in the solid-state boronizing agent sealed in a container,WC-Co cemented carbides were boronized at an elevated temperature.By the help of microstructure investigation and X-ray diffraction analysis of the used agent and the surface layers of the treated cemented carbides,it is determined that KBF4 comes into play to boronize the cemented carbides only on the existence of such substance as B4C,which is capable of providing boron.Inductionheating and hydrogen atmosphere are better for boronization than resistance heating and argon atmosphere,and the presence of SiC or rare-earth elements is also favorable.The boronizing mechanism has been studied based on experimental results.Abrasion test was applied with the result that the boronization makes the wear resistance improve significantly.
cemented carbide boronizing mechanism microstructure wear resistance
Lin Guobiao Zhang Zhongjian Qiu Zhihai Wang Jiahua Zhao Feifei
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100 Zhuzhou Cemented Carbide Group Corp.Ltd.,Zhuzhou 412000,China
国际会议
2012 Zhuzhou International Conference on Cemented Carbides(株洲硬质合金国际学术会议)
株洲
英文
326-331
2012-09-12（万方平台首次上网日期，不代表论文的发表时间）