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| 电致发热SiC多孔陶瓷Al2O3/SiO2复相绝缘涂层制备 | |
| 引用本文： | 樊子民,王晓刚,强云霄.电致发热SiC多孔陶瓷Al2O3/SiO2复相绝缘涂层制备[J].西安科技大学学报,2008,28(1):72-75. |
| 作者姓名： | 樊子民 王晓刚 强云霄 |
| 作者单位： | 1. 西安科技大学,材料科学与工程系,陕西,西安,710054;凝固技术国家重点实验室,西北工业大学,陕西,西安,710072 2. 西安科技大学,材料科学与工程系,陕西,西安,710054 3. 西安科技大学,通信与信息工程学院,陕西,西安,710054 |
| 基金项目： | 宁夏科技攻关项目 , 西安科技大学培育基金 |
| 摘 要： | 以异丙醇铝为前驱物,水为溶剂,硝酸为胶溶剂,用分散法制得性能稳定的透明氧化铝溶胶,将多孔陶瓷置于氧化铝溶胶中反复浸渍,经低温和高温热处理后使其表面形成致密的Al2O3和SiO2陶瓷涂层。通过EDS能谱分析得到Al2O3的含量约54%,SiO2含量约46%,电阻较涂覆前显著增加,得出用溶胶-凝胶法涂覆陶瓷体表面后,再经热处理是一种切实可行的制备绝缘陶瓷涂层的方法。 |
| 关 键 词： | 多孔陶瓷 绝缘涂层 电阻 |
| 文章编号： | 1672-9315(2008)01-0072-04 |
| 修稿时间： | 2007年3月14日 |
Preparation of Al2O3/SiO2 multiphase insulation coating on electric-heating porous SiC ceramics |
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| FAN Zi-min,WANG Xiao-gang,QIANG Yun-xiao.Preparation of Al2O3/SiO2 multiphase insulation coating on electric-heating porous SiC ceramics[J].JOurnal of XI’an University of Science and Technology,2008,28(1):72-75. | |
| Authors: | FAN Zi-min WANG Xiao-gang QIANG Yun-xiao |
| Abstract: | The stable and transparent Al2O3 Sol was prepared by the method of decentralization, taking aluminium isopropoxide as the predecessor, water as the solvent and nitric acid as peptizator, set the porous ceramic in the Al2O3 sol repeatedly soaks, make its surface form the dense polycrystal ceramic coating of Al2O3 and the SiO2 after the heat treatment craft. By the EDS analysis the content of Al2O3 can reach to 54%,the content of SiO2 can reach to 46%, the electric resistance also remarkable increase before the coating, we conclude that after coating the ceramics body surface by the method of sol gelatin, the heat treatment is a practical way to insulating ceramics. |
| Keywords: | porous SiC ceramic insulation coating resistance |
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