Xiao-lei Li, Xiao-liang Chen, Hui-ming Ji, Xiao-hong Sun, and Ling-ge Zhao, Phase analysis and thermal conductivity of in situ O'-sialon/β-Si3N4 composites, Int. J. Miner. Metall. Mater., 19(2012), No. 8, pp. 757-761. https://doi.org/10.1007/s12613-012-0624-0
Cite this article as:
Xiao-lei Li, Xiao-liang Chen, Hui-ming Ji, Xiao-hong Sun, and Ling-ge Zhao, Phase analysis and thermal conductivity of in situ O'-sialon/β-Si3N4 composites, Int. J. Miner. Metall. Mater., 19(2012), No. 8, pp. 757-761. https://doi.org/10.1007/s12613-012-0624-0
Xiao-lei Li, Xiao-liang Chen, Hui-ming Ji, Xiao-hong Sun, and Ling-ge Zhao, Phase analysis and thermal conductivity of in situ O'-sialon/β-Si3N4 composites, Int. J. Miner. Metall. Mater., 19(2012), No. 8, pp. 757-761. https://doi.org/10.1007/s12613-012-0624-0
Citation:
Xiao-lei Li, Xiao-liang Chen, Hui-ming Ji, Xiao-hong Sun, and Ling-ge Zhao, Phase analysis and thermal conductivity of in situ O'-sialon/β-Si3N4 composites, Int. J. Miner. Metall. Mater., 19(2012), No. 8, pp. 757-761. https://doi.org/10.1007/s12613-012-0624-0
School of Material Science and Engineering, Key Laboratory for Advanced and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
Typical O'-sialon-based ceramics, with a formula of Si2-xAlxO1+xN2-x, where x was set as 0.25, were fabricated by in-situ synthesis. Si3N4, Al2O3, and SiO2 powders were used as raw materials, and MgO and Y2O3 were added as sintering additives. All the samples were sintered at different temperatures under a nitrogen pressure of 0.25-0.30 MPa, and their microstructure, phase content, and thermal conductivity were evaluated. The effects of O'-sialon and β-Si3N4 on the thermal conductivity were analyzed by numerical calculation in detail. In the case of the similar porosity, the thermal conductivity of O'-sialon-based ceramics decreased with the ratio of O'-sialon/β-Si3N4 increasing. When the ratio was 12, the thermal conductivity of O'-sialon ceramics sintered at 1360℃ was 1.197 W·m-1·K-1.
School of Material Science and Engineering, Key Laboratory for Advanced and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
Typical O'-sialon-based ceramics, with a formula of Si2-xAlxO1+xN2-x, where x was set as 0.25, were fabricated by in-situ synthesis. Si3N4, Al2O3, and SiO2 powders were used as raw materials, and MgO and Y2O3 were added as sintering additives. All the samples were sintered at different temperatures under a nitrogen pressure of 0.25-0.30 MPa, and their microstructure, phase content, and thermal conductivity were evaluated. The effects of O'-sialon and β-Si3N4 on the thermal conductivity were analyzed by numerical calculation in detail. In the case of the similar porosity, the thermal conductivity of O'-sialon-based ceramics decreased with the ratio of O'-sialon/β-Si3N4 increasing. When the ratio was 12, the thermal conductivity of O'-sialon ceramics sintered at 1360℃ was 1.197 W·m-1·K-1.
下载: