TiC_P/Al基复合材料中TiC颗粒的合成反应研究  

Contact Synthesis Reaction of TiC Particle of TiC_P/Al-based Composite

作　　者：胡宪正[1] 于金[1] 谈荣生[1] 蒋建清[1] 

机构地区：[1]东南大学材料科学与工程系,江苏南京210096

出　　处：《铸造》2003年第4期243-245,共3页Foundry

摘　　要：应用自蔓延高温合成+铸造法制备出了TiCP/Al基复合材料;TiC颗粒直接在铝熔体中反应生成,合成的TiC颗粒细小(0.5～2μm)、分布均匀、与基体结合良好。工艺较为简单,反应时间短,碳化钛粒子的损失少,制备的复合材料成分均匀、结构致密;热力学及动力学分析表明TiC的合成分三阶段完成:燃烧前反应、燃烧合成反应、燃烧后反应,其中自蔓延燃烧合成反应是生成TiC的主导反应。With the Self-propagating high temperature synthesis and melting cast, the TiCP/Al composite has been prepared. The TiC particles have been synthesized in the Al melt, which are fine, uniformly distributed in matrix and combined well with matrix. The producing process is of simply, short reaction time, small loss of TiC particles and even component. By the analysis of the thermodynamics the whole process of synthesizing TiC is divided into three stages: reaction before combustion, combustion reaction, reaction after combustion. The combustion reaction is the leading reaction.

关 键 词：TiCp/A1基复合材料 自蔓延高温合成 TIC颗粒 制备 

分 类 号：TB331[一般工业技术—材料科学与工程]