摘要
以金属硝酸盐为起始原料,采用溶胶—凝胶法制备了CaMnO3粉末,分别采用真空放电等离子烧结(SPS)和在常压烧结的方法制备了CaMnO3块体,并对其物相、微观形貌和电性能进行了分析和测试。结果表明,制得粉末为单一物相的CaMnO3粉末;空气气氛烧结样品与真空放电等离子烧结样品相比,具有较致密结构和较好的电性能。其中500MPa成型,烧结温度为1200℃的样品在温度700℃时功率因子高达2.056×10-3W.m-1.K-2。
CaMnO3 powder was synthesized using sol-gel with nitrates as starting materials.CaMnO3 bulks were prepared using SPS method and conventional sintering method in air,respectively.Their phase composition,microstructure and electrical properties were investigated.The results revealerd that single phase CaMnO3 was prepared using sol-gel.The conventional sintering method in air is better than SPS in the preparation of CaMnO3 bulks.The sample sintered in air has condensed microstructure and better electrical prop...
出处
《中国体视学与图像分析》
2008年第4期237-240,共4页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金(50702003)
北京市教委科技发展项目
