Sintering Performance of MgAl2O4 Spinel with Various Al2O3 Content

Wei Zhang; Gan Shi; Zhi Yuan Feng

doi:10.4028/www.scientific.net/MSF.745-746.605

Paper Titles

Study on the In Situ Growth of Carbon Nanotubes for the Reinforcement of C_f/SiC Composite Fabricated by CVI+PIP Process
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Mechanism of Self-Propagating High-Temperature Synthesis of MoSi₂
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Application of Alumina-Magnesia Precast Blocks for LF Refining Ladle
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Preparation and Electrical Properties of Mn-Co-Ni-O Thin-Film for NTC Thermistors Application
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Sintering Performance of MgAl₂O₄ Spinel with Various Al₂O₃ Content
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Effects of Al₂O₃ Species and Particle Sizes on Properties of Al₂O₃-Cr₂O₃ Refractories
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Comparison of the Luminescence Properties of PbS Quantum Dots Prepared by Different Methods
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Joining of High Strength Graphite with Silicon Resin and SiO₂ Addition
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Enhanced Humidity Stability of (Li,K,Na)NbO₃-Based Lead-Free Piezoelectric Ceramics by Adding B₂O₃
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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Sintering Performance of MgAl2O4 Spinel with...

Sintering Performance of MgAl₂O₄ Spinel with Various Al₂O₃ Content

Abstract:

Magnesium aluminate spinel specimens with various Al₂O₃ content were prepared. Sintering performance and microstructure of different kinds of MgAl₂O₄spinel were studied. It is found that the sintering of materials becomes more difficult with the increase in their Al₂O₃ contents. Corundum begins to precipitate from the magnesium aluminate spinel with 85wt% Al₂O₃at 1400. However, with further increase in the sintering temperature, the corundum dissolves into magnesium aluminate spinel (above 1600). The precipitation and solid solution of corundum hinder the sintering of materials. In alumina-rich spinel, if the content of Al₂O₃ in alumina-rich spinel materials is more and the content of CA₆ is also more. At the same time CA₆ crystal is bigger in the alumina-rich spinel.