Effects of SnO2 Addition on the Synthesis of Magnesium Aluminate Spinel Microplatelets

Wenjie YUAN, Heng SHANG, Qingyou ZHU, Chengji DENG, Hongxi ZHU

Abstract


In order to prepare platelet-like spinel expected as the reinforcing phase, different amounts (5 20 at %) of SnO2 were added into the mixture of magnesia and alumina platelets, and then heated at 1300 1600 °C for 5 h. Effects of SnO2 addition on the synthesis of magnesium aluminate spinel microplatelets were investigated. The synthesized spinel was characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. Spinel platelets like “sesame cookie” formed derived from platelet alumina based on the template process. The highest spinel content in samples with 10 % of SnO2 addition achieved. The amount of Al2O3 and SnO2 in solid solution and degree of orneriness for spinel depended on SnO2 addition.

DOI: http://dx.doi.org/10.5755/j01.ms.24.1.17530


Keywords


tin oxide; magnesium aluminate spinel; microplatelets

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Print ISSN: 1392–1320
Online ISSN: 2029–7289