Combustion Synthesis TiC-Al2O3/Fe FGM and its Resisting Thermal Shock Behaviors
燃烧合成TiC-Al2O3/Fe梯度材料及其抗热震行为

The microstructure and composition distribution of TiC-Al2O3/Fe functionally graded materials(FGM) prepared by SHS/PHIP were studied, and the resisting thermal shock behavior was analyzed. The results show that TiC-Al2O3/Fe FGM has the desired composition distribution. The thermal shock fracture of TiC-Al2O3/Fe FGM originated from the surface on the side of ceramic and propagated perpendicular to the graded layer. And the crack of thermal fatigue originated and propagated in graded layer. However, no cross-section crevice through the graded layer was found in the two conditions.