Synthesis of an alumina-YAG nanopowder via sol-gel method

被引：73

作者：

Hassanzadeh-Tabrizi, S. A. ^{[1
]}

Taheri-Nassaj, E. ^{[1
]}

Sarpoolaky, H. ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Dept Mat Sci & Engn, Tehran, Iran

[2] Iran Univ Sci & Technol, Dept Mat, Div Ceram, Tehran 16844, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 456卷 / 1-2期

关键词：

nanostructured material; sol-gel processes; phase transitions; X-ray diffraction;

D O I：

10.1016/j.jallcom.2007.02.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Alumina-YAG (Y3Al5O12) composite has attracted a great deal of attention as a high temperature structural ceramic due to its good creep resistance. In the present article, an Al2O3-YAG nanopowder was synthesized by aqueous sol-gel method using AlCl3 center dot 6H(2)O, aluminum and Y2O3 powders as raw materials. The dried amorphous gel was heat treated in the range of 600-1500 degrees C. The influence of heat treatment on crystallization and phase transformation of the dried gel was investigated using X-ray diffractometery (XRD), scanning electron microscopy (SEM), thermogravimetry and differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR). It was shown that the a I heat treated at 1300 degrees C resulted in the formation of a crystalline Al2O3-YAG nanopowder with particle size distribution ranges from 70 to 130 nm. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：282 / 285

页数：4

共 23 条

[1] STRUCTURAL SUPERPLASTICITY IN SINGLE-PHASE CRYSTALLINE CERAMICS [J].