Paper Title:

Fabrication, Microstructure and Properties of Nitrides Bonded Alumina Castables by In Situ Nitridation Reaction

Periodical Advanced Materials Research (Volumes 284 - 286)
Main Theme Materials and Design
Edited by Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
Pages 69-72
DOI 10.4028/www.scientific.net/AMR.284-286.69
Citation Quan Li Jia et al., 2011, Advanced Materials Research, 284-286, 69
Online since July, 2011
Authors Quan Li Jia, Fang Bao Ye, Yu Cui Zhang
Keywords Alumina Castables, In Situ Nitridation Reaction, Nitrides, Thermal Shock Resistance
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Abstract

Nitrides(Si3N4/Sialon) bonded alumina castables were fabricated by in situ nitridation reaction. Effects of the formation of nitrides on the physical properties, hot strength and thermal shock resistance were investigated. The results show that the phase composition of castables is alumina, a-Si3N4, b-Si3N4 and Si2N2O after fired at 1400ºC and 1450ºC, and is alumina, b-Sialon and O’-Sialon after fired at 1500ºC. Hot modulus of rupture and thermal shock resistance of specimens are noticeably improved due to the formation of nitrides.