摘要
陶瓷颗粒增强铝基复合材料是一种比较重要的复合材料,采用喷射沉积法,并对快速凝固后的样品施加相应的热压处理工艺,制得了铝基TiB_2/Al_2O_3陶瓷颗粒增强复合材料。对用原料质量配比为Al:85.5%,TiO_2;9.5%,B_2O_3:4.99%制得的复合材料进行了XRD、ESEM、TEM分析,发现反应中除了生成TiB_2、Al_2O_3相外,还生成了Al_3Ti新相。并对用5种不同成分制备的复合材料进行了抗拉强度测试和比较,同时测试了材料的布氏显微硬度(HB),其中对反应生成的增强相含量最低(V%=10.8%)和含量最高(V%=31.0%)的复合材料进行了分析和比较。
Aluminum matrix ceramic particle reinforced composite（AMMC） is a very important composite. Aluminum matrix composite reinforced with TiN/AlaOa ceramic particle is in-situ synthesized using spray deposition and heat-treating technique successfully in this paper. Firstly, the composite which is made from composition 1 （the mass ratio of raw material is A1..85. 5%,TiO2 ：9.5%,B2O3 ：4. 99%） is analyzed by XRD, ESEM and TEM. Besides TiB2, Al2O3 phase that is created in the reaction,a new intermetallic AlaTi phase is found in the experiment. Then another 4 groups of composite that have different mass ratio of raw material are prepared by the same scheme, Ultimate Tensile Strength and Brinell hardness measurements are carried out among the 5 groups of composites. The composites which have the lowest（10.8 %） and highest（31.0 %）volume percent of reinforcement are clearly analyzed and compared.
关键词
金属铝基
陶瓷颗粒增强
喷射沉积
细晶强化
弥散强化
aluminum matrix, ceramic particle reinforced, spray deposition, fine-grained strengthening, dispersion strengthening
作者简介
陈兴：男，1984年生，硕士，主要从事金属基陶瓷颗粒复合材料研究E-mail：Chemxing020090@sohu．com
