Combustion Synthesis of C/MgAl_(2)O_(4)Composite Powders and Their Microstructure Evolution

作     者：LYU Lihua DING Donghai XIAO Guoqing LYU Lihua;DING Donghai;XIAO Guoqing

作者机构：Department of Civil and Construction EngineeringShanxi Institute of TechnologyYangquan 045000China School of Materials Science and EngineeringXi’an University of Architecture and TechnologyXi’an 710043China 

出 版 物：《China's Refractories》 (中国耐火材料（英文版）)

年 卷 期：2021年第30卷第4期

页      面：7-11页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：C/MgAl_(2)O_(4)composite powders combustion synthesis combustion front quenching test microstructure evolution1 

摘      要：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/MgAl_(2)O_(4))composite powders were prepared using MgC2O4·2H2O,MgO2,Al2O3 powder,and Al powder as raw materials by combustion *** 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 *** MgAl_(2)O_(4)spinel shows both granular and rod-like *** granular MgAl_(2)O_(4)spinel is generated from mutual diffusion between MgO and Al2O3;while the rod-like MgAl_(2)O_(4)spinel is mainly formed by the vapor-solid growth mechanism from Mg vapor and Al2O3.