Abstract:
The present invention relates to a method of making a powder composition, which is suitable for production of a cBN composite material comprising cBN grains, a metallic binder phase and a ceramic binder phase. The method comprises a step of providing at least one ceramic binder phase forming powder in a milling device. Thereafter the at least one ceramic binder phase forming powder is subjected to a milling operation in the milling device to form a milled powder with 0.1 μm 50 ≤ 1.40 μm of the aluminium powder. The invention also relates to a method of making a cBN composite material.