- Combustion Synthesis of C/MgAl2O4 Composite Powders and Their Microstructure Evolution
- 作者：LYU Lihua1,2*，DING Donghai2 , XIAO Guoqing2
- 作者机构：1) Department of Civil and Construction Engineering, Shanxi Institute of Technology, Yangquan 045000, China 2) School of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710043, China
- 分类号：
- 卷号：
- 期号 : 2021 年， 第4期
- 页码：7 - 11
This work aims at solving the problems of difficult dispersion, easy oxidation and high cost of nano carbon during application, carbon/magnesium aluminate spinel (C/MgAl2O4) composite powders were prepared using MgC2O4·2H2O, MgO2, Al2O3 powder, and Al powder as raw materials by combustion synthesis. The results indicate that with the maximum MgC2O4·2H2O addition of 33.34 mass%, the prepared powder contains 1.17 mass% of carbon and carbon distributes among spinel grains. The MgAl2O4 spinel shows both granular and rod-like morphologies. The granular MgAl2O4 spinel is generated from mutual diffusion between MgO and Al2O3; while the rod-like MgAl2O4 spinel is mainly formed by the vapor-solid growth mechanism from Mg vapor and Al2O3.
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