BEHAVIOUR OF HARD ALLOYS IN SLIDING AND EROSION WEAR CONDITIONS

摘要

The wear behaviour of some carbide composite differing in composition and structure (WC hardmetals, TiC-, Cr_3C_2- cermets) in a set of wear trials (erosion-, sliding wear)were investigated. Comparative trials in these conditions with tool steels, complemented by SEM studies were performed. It was shown that in erosion as well as in sliding wear conditions the performance of hard alloy (carbide composite, tool steel) is controlled primarily by its carbide phase (its amount in alloy and properties).