OXIDATION OF TITANIUM CARBIDE BASE CERAMALS CONTAINING MOLYBDENUM, TUNGSTEN, AND COBALT

摘要

A number of titanium carbide base ceramals were investigated to determine the oxidation-penetration characteristics at various tem-peratures and exposure periods. Specimens of the various ceramals, which were composed of titanium carbide and 5, 10, 20, and 30 per¬cent of molybdenum, tungsten, or cobalt, were oxidized in an air atmosphere at temperatures of 1625°, 1785°, and 2000℉. A direct-measurement metallographic method was used to determine the depth of oxidation penetration. A metallographic study was made of the oxidation interface and the oxygen-diffusion zone.