以硝酸盐为原料,采用溶胶-凝胶法结合常压烧结在1000℃制备出CaMnO3和掺杂Sm3+的(Ca1-xSmxMnO3)热电材料.利用TG-DTA、XRD、SEM研究了材料的物相和微观形貌,重点考察了Sm3+掺杂对CaMnO3的高温热电性能参数Seebeck系数、电阻率和功率因子的影响.结果表明,制备出的Sm3+掺杂的热电材料为单一的物相,具有致密的内部结构,Sm3+掺杂可以有效地改变其热电性能,当Sm3+的掺杂量为0.05时可获得最佳的热电性能,600℃它的功率因子为2.3×10-4W/(m·K2).
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