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

  • Wenjie YUAN Wuhan University of Science and Technology
  • Heng SHANG Wuhan University of Science and Technology
  • Qingyou ZHU Wuhan University of Science and Technology
  • Chengji DENG Wuhan University of Science and Technology
  • Hongxi ZHU Wuhan University of Science and Technology
Keywords: tin oxide, magnesium aluminate spinel, microplatelets

Abstract

In order to prepare platelet-like spinel expected as the reinforcing phase, different amounts (520 at %) of SnO2 were added into the mixture of magnesia and alumina platelets, and then heated at 13001600 °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

Author Biography

Wenjie YUAN, Wuhan University of Science and Technology
The State Key Laboratory of Refractories and Metallurgy  Professor
Published
2017-09-26
Section
CERAMICS AND GLASSES