Абразивный износ двойных композитов ZrB2-TaB2-SiC

Abstract

The work is devoted to the study of the abrasive wear of ceramic materials of the ZrB2-TaB2-SiC system, which has a dual composite structure, of the "composite in composite" type, where the matrix is represented by ZrB2-SiC, and the inclusions by TaB2-SiC. The studied ceramics were obtained by hot pressing with different ratios of the matrix and inclusions from 90/10 to 50/50. Sample with a homogeneous distribution of components served as a control. It has been found that the increase in content is included in the catastrophic drop in wear resistance. The volume loss of DC10, DC20 and HC samples was shown to be 0.037%, 0.05% and 0.057%, respectively. At the same time, the consumption of DC40 and DC50 while passing the same distance lost 3.97% and 5.71% of the initial volume, respectively.