硅酸盐学报2017，Vol.45Issue(6)：817-822,6.DOI:10.14062/j.issn.0454-5648.2017.06.10
低温制备高纯氧化铝陶瓷支撑体
Preparation of High Purity Alumina Ceramic Supports at Low Temperature
王峰 1贺智勇 1张启富 1千粉玲 1王晓波 1谢志鹏2
作者信息
- 1. 中国钢研科技集团有限公司新冶集团,北京 100081
- 2. 清华大学材料学院,北京 100084
- 折叠
摘要
Abstract
Alumina ceramic supports were fabricated at a low temperature (≤1500℃) using a Ti(SiO4)2coated alumina powder with the median size of 20μm as a starting material. The sintering characteristic was determined by a thermal expansion instrument. The phase composition, micro-structure, pore size distribution and flexural strength were characterized by scanning electron microscopy, scanning electron microscopy, mercury porosimetry and universal mechanical test, respectively. The results indicate that the coated alumina powder exhibits the excellent sintering activity. The sintering process of alumina particles was realizedvia solid state reaction between alumina and titania. The obtained supports show a homogeneous micro-structure. The alumina ceramic supports prepared at 1400℃ have an open porosity of 33.2% , average pore size of 3.69μm, mechanical strength of 57.11MPa and nitrogen gas flux of 959m3/(m2·h) under a trans-membrane pressure of 0.1MPa, and they also exhibit the excellent chemical resistance.关键词
包覆/氧化铝陶瓷支撑体/烧结特性/显微结构/性能Key words
coating/alumina ceramic support/sintering characteristic/micro-structure/property分类
化学化工引用本文复制引用
王峰,贺智勇,张启富,千粉玲,王晓波,谢志鹏..低温制备高纯氧化铝陶瓷支撑体[J].硅酸盐学报,2017,45(6):817-822,6.
