摘要
通过对TiO2 Al C体系反应过程的研究 ,采用反应热压法制备了原位TiC、Al2 O3粒子复合增强的TiC Al2 O3/Al复合材料。研究了体系中Al含量对反应合成过程及复合材料致密度的影响 ,分析了热爆合成TiC粒子的形成机制。研究表明 :生成的TiC粒子呈球形 ,尺寸均匀 ;且随体系Al含量的提高 ,TiC合成反应温度降低 ,TiC颗粒尺寸减小 ,复合材料的致密度增加 ;在 35MPa的热压下 ,复合材料可达到理论密度的 95
Through a study on the reactions occuring in a Ti 2O 2 Al C system, in situ TiC and Al 2O 3 particulates reinforced Al composite (TiC Al 2O 3/Al)was formed by thermal explosion reaction and hot pressing. The effect of Al content on the process of synthesis and relative density of the composite, and the mechanism of combustion synthesis of TiC particles are studied. These studies show that TiC particles obtained in this experiment have a spherical shape and are uniform in size distribution. The temperature of synthesis and the particle size of TiC decreases and the relative density of the composite increases with an increase in the Al content. Under a hot press pressure of 35MPa, TiC Al 2O 3/Al composite with a relative density of more than 95% can be obtained.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
1999年第1期47-50,共4页
Acta Armamentarii
关键词
热爆合成
金属基
复合材料
颗粒增强
热压
combustion synthesis,metal matrix composits,TiC,Al_2O_3,TiO_2-Al-C system
