Affiliation:
1. Faculty of Engineering, Shahrekord University, Shahrekord, Iran
Abstract
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?C. The calcined mixture was milled, pressed
and then, fired at 1300 and 1500?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.
Publisher
National Library of Serbia
Subject
Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites
Cited by
27 articles.
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