Sliding wear of chromium carbide based cermets under different wear conditions

Present paper considers the sliding wear properties of chromium carbide based cermets, produced by different methods and with different chemical compositions (10-30% of Ni), under different wear conditions. Sliding wear properties depend on the chemical composition and microstructure Of cermets and although on wear conditions. Sliding wear under normal load 40 N is surprising, sliding wear coefficient decreases in increase of binder content. Under higher normal loads wear coefficient increases in increase of binder content. Wear coefficient is highest for pure water conditions; wear coefficient in case of artificial seawater is lower than for dry and pure water conditions. Better wear resistance exhibited cermets produced by reactive sintering. Wear mechanism of chromium carbide based cermets is mainly dependent on thermal cracking and fatigue related crushing of large carbide grains and carbide framework and also adhesion.