Effect of MgCl2 addition on the sintering behavior of MgAl2O4 spinel and formation of nano-particles

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Abstract

In this paper, the effect of MgCl2addition on the sintering behavior of MgAl2O4spinel 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 MgCl2addition has great effect on the densification and particle size of spinel. Besides, MgCl2addition increases the amount of spinel phase at all firing temperatures. Due to the decomposition of MgCl2and then formation of ultra-fine MgO particles, the nano-sized spinel is formed on the surface of the larger spinel particles.

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APA

Mohammadi, F., Otroj, S., & Nilforushan, M. R. (2014). Effect of MgCl2 addition on the sintering behavior of MgAl2O4 spinel and formation of nano-particles. Science of Sintering, 46(2), 157–168. https://doi.org/10.2298/SOS1402157M

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