采用放电等离子烧结法(SPS)在400℃、420℃、440℃的烧结温度下制备了n型Bi2Te3块体材料,利用X射线衍射对块体材料进行了物相分析,在300～500K的温度范围内分别测量了块体材料的塞贝克系数α、电导率σ以及热导率K,利用MSP(Modified Small Punch)小样品试验法对块体材料进行了力学性能分析.结果表明:400℃烧结材料的热电性能优值ZT具有最大值,约为O.79;块体材料在440℃时具有最大的MSP断裂强度,约为119.5MPa,表明了MSP试验法是评价小尺寸陶瓷材料力学性能方便、可靠的有效方法.
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