Combustion synthesis of hexagonal AlN-SiC solid solution under low nitrogen pressure

被引：0

作者：

Juang, R.-C. ^{[1
]}

Chen, C.-C. ^{[1
]}

Kuo, J.-C. ^{[1
]}

Huang, T.-Y. ^{[1
]}

Li, Y.-Y. ^{[1
]}

机构：

[1] Chaoramics Laboratory, Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, 621, Taiwan

来源：

Journal of Alloys and Compounds | 2009年 / 480卷 / 02期

关键词：

AlN-SiC solid solutions were synthesized by self-propagating combustion of powders consisting of Al; Si and carbon black (CB) under low nitrogen pressure (0.1-0.5 MPa); with the molar ratio of Al and Si; and nitrogen pressure as the main investigating parameter. The products were mainly AlN-SiC solid solution with a residual Si; and the morphology was of hexagonal crystal. Nearly pure AlN-SiC solid solution; also having the best solid-solution homogeneity in this study; was obtained by adding extra CB to the starting powders. The best Al/Si molar ratio was 1 or 1.5 and the combustion results indicated that better combustion produced a higher combustion temperature; greater product purity; and better solid solution homogeneity. Increasing nitrogen pressure (from 0.1 to 0.5 MPa) moderately increased the combustion temperature and the product homogeneity; but combustion velocity increased by around 65%. The full width at half maximum (FWHM) of AlN-SiC solid solution's (1 1 0) XRD peak; served as the homogeneity index for the AlN-SiC solid solution (D. Kata; K; Shirai; M; Ohyanagi; Z.A; Munir; J; Am; Ceram; Soc; 84; (2001); 726-732.); of all samples were summarized with the reported values in the literature; where our FWHM values were comparable to the reported data. © 2009 Elsevier B.V. All rights reserved;

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摘要：

Journal article (JA)

引用

页码：928 / 933

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