Contact interaction of superhard materials. Tribologica characteristics

Abstract

The review of the tribologica characteristics and the interaction mechanism of friction couples of superhard (diamond, cubic boron nitride based materials) and high-modulus materials based on tungsten carbide. Diamonds are distinguished of small friction coefficient (f = 0,1—0,2), have a high load capacity — diamond withstand loads up to 0,1 of the elastic modulus without destroying of the friction zone surface layers. Mechanism of diamond-diamond interaction is adhesion: conglutination and destruction of friction surfaces not observed. Superhard and high-materials — the most advanced for equipment of heavy-duty machinery operating in extreme conditions.