LaB6-ZrB2 eutectic composites were sintered by hot pressing. The oxidation behavior of LaB6-ZrB2 eutectic composites was studied at 600 to 1300C. It was shown that the sample weight increased with increasing oxidation temperature and prolonging holding time. The rate of weight change was described by kp(g2/m2s) = 6.24 x 10-4exp[-38940/RT], but changed with change in oxidation time at 1200C. Weight gain was evident within less than 1h, but subsequently slowed due to evaporation of B2O3. The rate of weight change increased abruptly at 1300C. The oxidation resistance of LaB6-ZrB2 composites was higher than that of monolithic LaB6. Fabrication and Oxidation Behavior of LaB6-ZrB2 Composites. Gao, R., Min, G., Yu, H., Zheng, S.Q., Lu, Q., Han, J., Wang, W.: Ceramics International, 2005, 31[1], 15-9