Element Six Abrasives S.a.

Guven Akdogan

Nedret Can

Cornelius Johannes Pretorius

Peter Michael Harden

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.

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Johannesburg, South Africa

Guven Akdogan