Influence of Sintering Temperature on Phase Behavior of Products from Rutile and Quartz by Aluminothermic Reduction Nitridation

Abstract:

The effects of sintering temperatures on phase behavior of products from rutile and quartz by aluminothermic reduction nitridation (ARN) were investigated in this study. The crystalline phase and morphology of the samples were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), respectively. As the temperature was 1200 oC, the phases were corundum, TiN, Si and a small amount of cristobalite. Mullite were initially observed when it reached 1300 oC. A small amount of Si₃Al₃O₃N₅ was detected when the temperature rose to 1400 oC. More corundum, TiN and Si₃Al₃O₃N₅ were obtained at 1500 oC. The quantities of TiN and corundum increased slightly at 1550 oC while Si₃Al₃O₃N₅ reduced. In addition, the microstructure of well-developed β-Sialon crystals was long columnar and the TiN particles distributed in the composites.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 234-237
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.234
• Online since: March 2014
• Authors: Ling Zhu, Kai Chen, Zhao Hui Huang*, Ming Hao Fang, Yan Gai Liu, Xiao Wen Wu, De Xin Yang, Bao Lin Liu
• Keywords: Aluminothermic Reduction Nitridation, Composite, Phase Behavior, Quartz, Rutile

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