Effect of Binder Phase on Sintering of Cemented Carbides
Thanks to their exceptional hardness and wear resistance,WC-Co alloys are used for metal cutting and rock drilling tools made by the powder metallurgy route.Nevertheless the use of cobalt as a binder is questioned by the new European regulation on chemicals.New alternative binders are considered,especially Fe and Ni-alloys,because of the similar mechanical and physical properties and affinity to C and W.The sintering behaviour of WC-M alloys(M=Co,Ni,Fe)is discussed from dilatometric results and microstructural observations at different stages.WC-Co and WC-Ni shrinkage behaviour is different from the one of WC-Fe,confirmed by microstructural analysis.The difference in solubility and interface energies might be an explanation about this behaviour,but effect of the initial powder morphology is also investigated.
Alternative binder cemented carbides sintering shrinkage behaviour microstructure evolution
Roulon Zoé Missiaen Jean-Michel Lay Sabine
Univ.Grenoble Alpes,SIMAP,Grenoble INP,Saint-Martin dHères,38400,FRANCE
国际会议
北京
英文
770-774
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）