Synthesis and characterization of CaO doped alumina-zirconia fibers by sol-gel process

被引：10

作者：

Chandradass, J. ^{[1
]}

Balasubramanian, M. ^{[2
,3
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Gyeongnam 641773, South Korea

[2] Indian Inst Technol, Composites Technol Ctr, Madras 600036, Tamil Nadu, India

[3] Indian Inst Technol, Dept Metallurg & Mat Engn, Madras 600036, Tamil Nadu, India

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 02期

关键词：

Al2O3; ZrO2; Al2O3-ZrO2; CaO; differential thermal analysis; fibers; grain size; microstructure; phase transformation; scanning electron microscope; sintering; sol-gel process; X-ray diffraction;

D O I：

10.1080/10426910701774635

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calcium oxide (CaO) doped Alumina-zirconia fibers were prepared by sol-gel process. The starting materials used for the preparation of alumina and zirconia sol were aluminium-tri-isopropoxide and zirconium oxychloride, respectively. Alumina sol and zirconia sol were mixed in definite proportions, so that the final composition contains 10wt% ZrO2. CaO was introduced into the mixed sol in the form of calcium nitrate such that the final composition contains 1 and 2wt%. Alumina-zirconia fibers were prepared from the mixed sol containing CaO, respectively. Sintered alumina-zirconia fiber has alpha-Al2O3, t-ZrO2, and m-ZrO2 phases. The phase transition to alpha-Al2O3 takes place at lower temperature in the presence of CaO. The addition of CaO increases the grain size.

引用

页码：159 / 162

页数：4

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