Effect of MgCl2 Addition on the Sintering Behavior of MgAl2O4 Spinel and Formation of Nano-particles

被引：30

作者：

Mohammadi, F. ^{[1
]}

Otroj, S. ^{[1
]}

Nilforushan, M. R. ^{[1
]}

机构：

[1] Shahrekord Univ, Fac Engn, Shahrekord, Iran

来源：

SCIENCE OF SINTERING | 2014年 / 46卷 / 02期

关键词：

Sintering; Magnesium chloride; Spinel; Nano-particles; Phase composition;

D O I：

10.2298/SOS1402157M

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, the effect of MgCl2 addition on the sintering behavior of MgAl2O4 spinel produced via oxide mixture method was investigated. For this reason, the stoichiometric mixture of magnesite and calcined alumina as raw materials was calcined at 1100 degrees C. The calcined mixture was milled, pressed and then, fired at 1300 and 1500 degrees C after addition of various amounts of MgCl2. Besides, the physical properties, phase composition and microstructure of fired samples were investigated. The results showed that MgCl2 addition has great effect on the densification and particle size of spinel. Besides, MgCl2 addition increases the amount of spinel phase at all firing temperatures. Due to the decomposition of MgCl2 and then formation of ultra-fine MgO particles, the nano-sized spinel is formed on the surface of the larger spinel particles.

引用

页码：157 / 168

页数：12

共 24 条

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