关键词: 堇青石;莫来石;窑具;抗热震性

Abstract: Cordierite-mullite kiln furniture materials were prepared by using cordierite , mullite , kaoline and alumina micro-powder to meet the requirement of preparing Li-ion battery cathode materials .The effects of cordierite aggregate and powder additions on the cold performance , high temperature modulus of rupture and thermal shock resistance were studied .XRD and SEM were used to analyze the phase transformation and the microstructure of fired samples respectively . The results show that: As the cordierite aggregate or powder addition increasing from 0 to 30％, the permanent linear change , apparent porosity , high temperature modulus of rupture increase , but the cold modulus of rupture changed little;the cold crushing strength shows a tendency to decrease or increase respectively; Thermal shock resistance of samples increases then decreases .The optimal addition of cordierite aggregate and cordierite powder is 20％and 20％, respectively .

Key words: cordierite;mullite;kiln furniture;thermal shock resistance