THE EFFECTS OF PREPARATION METHOD ON THE CHARACTERISTICS OF ALUMINA-ZIRCONIA POWDERS

NCU Institutional Repository > 工學院 > 化學工程與材料工程研究所 > 期刊論文 > Item 987654321/26655

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/26655

題名:	THE EFFECTS OF PREPARATION METHOD ON THE CHARACTERISTICS OF ALUMINA-ZIRCONIA POWDERS
作者:	LI,CP;CHEN,YW;YEN,TM
貢獻者:	化學工程與材料工程學系
關鍵詞:	GRAIN-GROWTH;AL2O3-ZRO2 COMPOSITES;ZRO2 INCLUSIONS;STABILITY;PARTICLES;MIXTURES
日期:	1995
上傳時間:	2010-06-29 17:33:27 (UTC+8)
出版者:	中央大學
摘要:	Two series of Al2O3 -ZrO2 powders with various contents of ZrO2 were synthesized by sol-gel (chemical polymerization) and coprecipitation methods. The effect of ZrO2 content and preparation method on the structure and texture of the resultant powders were determined. The samples were characterized by nitrogen sorption, thermal gravimetric analysis, X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy. The sol-gel method yields more homogeneous powder and retards the aggregation of particles. It produces powders with a larger surface area, a smaller pore size, and a narrower pore size distribution than the coprecipitated one. The X-ray diffraction results show that the powders are amorphous at the calcination temperature below 700 degrees C for both methods. Incorporation of zirconia into alumina greatly affects the surface properties of the powders upon heating, exerting a protective effect against sintering, and inhibiting both the crystallization of the gamma-Al2O3 phase and the gamma- to alpha-phase transformation. Zirconia is dispersed in alumina matrix and does not form a new structure.
關聯:	JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
顯示於類別:	[化學工程與材料工程研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	461	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....