The invention provides a tool component comprising a first layer of polycrystalline cBN material which has a rake (working) surface and a flank surface and comprises less than 70 vol % cBN; and a secondary layer across the rake surface or at least partially across the rake surface and comprising a refractory material and optionally a binder phase and optionally cBN, wherein the secondary layer has a higher resistance to crater formation than the first layer of cBN material and has a lower affinity towards iron than cBN.
申请公布号
EP2015881(A2)
申请公布日期
2009.01.21
申请号
EP20070734365
申请日期
2007.04.23
申请人
ELEMENT SIX (PRODUCTION) (PTY) LTD.
发明人
CAN, Nedret;AKDOGAN, Guven;HARDEN, Peter, Michael;PRETORIUS, Cornelius, Johannes