Effects of Sintering Temperature on Microstructure and Phase Formation of Nitrides Bonded MgAl₂O₄-Crefractory

Abstract:

The microstructure and phase analysis of in situ nitrides formation in MgAl2O4-C refractory were investigated with different temperature. The phase compositions and microstructure of the MgAl2O4-C refractory were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that sintering temperature has a significant influence on the microstructure and phase analysis of MgAl2O4 refractory. As the sintering temperatures are 1450°C and 1500°C, nitride that formed in samples is β-Sialon and the crystal morphology is columnar with short size. With the temperature rise to 1550°C and 1600°C, nitride formed in sample is AlON with the crystal morphology is tabular polymorph with large size.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 2354-2357
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.2354
• Online since: January 2013
• Authors: Nai Peng, Cheng Ji Deng, Wen Jie Yuan, Hong Xi Zhu
• Keywords: AlON, MgAl₂O₄-C Refractory, SiAlON, Sintering Temperature

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