| 放电等离子烧结制备Ca2Co2O5陶瓷过程中Co价态分析 |
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| 引用本文： | 张艳峰,张久兴. 放电等离子烧结制备Ca2Co2O5陶瓷过程中Co价态分析[J]. 河北师范大学学报(自然科学版), 2006, 30(5): 563-565,598 |
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| 作者姓名： | 张艳峰 张久兴 |
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| 作者单位： | 河北师范大学,化学与材料科学学院,河北,石家庄,050016;北京工业大学,新型功能材料教育部重点实验室,北京,100022 |
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| 摘 要： | 采用(NH4)2C2O4共沉淀法制备出CaC2O4和CoC2O4前驱物,在800℃对前驱物煅烧8 h得粉体组成为Ca2Co2O5,Co3O4,CaO,该粉体经放电等离子烧结(SPS)后所得陶瓷块体为纯相Ca2Co2O5,利用X光电子能谱(XPS)分析了烧结前后样品中Co元素价态.
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| 关 键 词： | SPS Ca2Co2O5 XPS |
| 文章编号： | 1000-5854（2006）05-0563-03 |
| 收稿时间： | 2005-10-11 |
| 修稿时间： | 2005-10-112006-01-10 |
Study on the Valence States of Co of Ca2Co2O5 Ceramics in the Preparation Process of Spark Plasma Sintering |
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| ZHANG Yan-feng,ZHANG Jiu-xing. Study on the Valence States of Co of Ca2Co2O5 Ceramics in the Preparation Process of Spark Plasma Sintering[J]. Journal of Hebei Normal University, 2006, 30(5): 563-565,598 |
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| Authors: | ZHANG Yan-feng ZHANG Jiu-xing |
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| Affiliation: | 1.College of Chemistry and Material Sciences,Hebei Normal University,Hebei Shijiazhuang 050016,China; 2. The Key Laboratory of Advanced Functional Materlals,Ministry of Education,Beijing University of Technology,Beijing 100022,China |
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| Abstract: | Ca_2Co_2O_5 ceramics were prepared by a coprecipitation method and spark plasma sintering(SPS) using cobalt and calcium nitrates as starting materials and ammonium oxalate as precipitant.Single phase Ca_2Co_2O_5 ceramics can be obtained by spark plasma sintering using the precursor powders which consist of Ca_2Co_2O_5,Co_3O_4 and CaO.The valence states were researched by X-ray photoelectron spectroscopy(XPS). |
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| Keywords: | SPS Ca2Co2O5 XPS |
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