材料工程Issue(7)：23-27,5.
Al2O3粉粒度对硅溶胶涂料及陶瓷型壳性能的影响
Effect of Particle Size of Al2O3 Powder on Property of Silica Sol Slurry and Ceramic Shell
姚建省 1李志宏 2唐定中 1刘晓光 2肖克2
作者信息
- 1. 天津大学,材料科学与工程学院,天津,300072
- 2. 北京航空材料研究院,北京,100095
- 折叠
摘要
Abstract
The Al2O3 powders of three different particle sizes were used to confect the slurry. The rheological properties of slurry and mechanical properties of ceramic shell were investigated, and the gravitational distortion of shell at high temperature was also investigated. The advantage and disadvantage of three kinds of Al2O3 powders were tested through the disquisition of actual casting instance. The experiment results indicated that the rheological properties of three slurries were all favorite, and better comprehensive properties were possessed to the shell made by W20+W40 powder. Its bending strength at 1500℃was up to 1.14MPa, and its gravitational distortion reduced to 2.98%. The statistical results of actual casting condition suggested that this kind of casting had favorable technological property which had smooth surface and had no sand burning and seam.关键词
粒度/Al2O3粉/流变性能/高温强度/自重变形Key words
particle size/Al2O3 powder/rhelolgical property/high temperature strength/gravitational distortion分类
矿业与冶金引用本文复制引用
姚建省,李志宏,唐定中,刘晓光,肖克..Al2O3粉粒度对硅溶胶涂料及陶瓷型壳性能的影响[J].材料工程,2009,(7):23-27,5.
