| 沉积温度对C-AlPO_4涂层显微结构的影响 |
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| 引用本文： | 杨文冬,黄剑锋,曹丽云,夏昌奎.沉积温度对C-AlPO_4涂层显微结构的影响[J].武汉理工大学学报,2010(5). |
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| 作者姓名： | 杨文冬 黄剑锋 曹丽云 夏昌奎 |
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| 作者单位： | 陕西科技大学教育部轻化工助剂化学与技术重点实验室; |
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| 基金项目： | 国家自然科学基金(50772063); 教育部博士点基金(20070708001); 陕西省自然科学基金(SJ08-ZT05); 教育部新世纪优秀人才支持计划基金(NECT-06-0893); 陕西科技大学研究生创新基金 |
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| 摘 要： | 采用水热电泳沉积法在C/C-SiC基体表面制备了方石英型磷酸铝(C-AlPO4)外涂层,借助XRD和SEM对涂层的晶相组成和显微结构进行了表征。研究了沉积温度对C-AlPO4涂层显微结构的影响,讨论了涂层的沉积动力学,进行了抗氧化性能测试。结果表明:353~393 K范围内,沉积温度对涂层的显微结构有较大影响;涂层的沉积量随着温度的升高而增加;涂层的沉积规律受C-AlPO4带电颗粒的向阴极表面扩散迁移所控制;涂层的沉积活化能为21.88kJ/mol;在1 773 K空气气氛氧化37 h后,涂层试样失重仅为0.53%。
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| 关 键 词： | 磷酸铝 水热电泳沉积 涂层 碳/碳复合材料 沉积动力学 |
Influence of Temperature on the Microstructures of Cristobalite Aluminum Phosphate Coatings |
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| YANG Wen-dong,HUANG Jian-feng,CAO Li-yun,XIA Chang-kui.Influence of Temperature on the Microstructures of Cristobalite Aluminum Phosphate Coatings[J].Journal of Wuhan University of Technology,2010(5). |
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| Authors: | YANG Wen-dong HUANG Jian-feng CAO Li-yun XIA Chang-kui |
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| Affiliation: | YANG Wen-dong,HUANG Jian-feng,CAO Li-yun,XIA Chang-kui(Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry of Ministry of Education,Shaanxi University of Science & Technology,Xi\'an 710021,China) |
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| Abstract: | Cristobalite aluminum phosphate coatings were prepared by hydrothermal electrophoretic method on SiC coated C/C compositess.Phase compositions and microstructures of the as-prepared coatings were characterized by XRD and SEM.The influences of deposition temperature on the microstructures and the deposition kinetics of the cristobalite aluminum phosphate coatings were investigated,respectively.Oxidation resistance of the cristobalite aluminum phosphate coatings were tested.Results show that the deposition te... |
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| Keywords: | aluminum phosphate hydrothermal electrophoretic coatings carbon/carbon composites deposition kinetics |
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