( 1. 南京工业大学电光源材料研究所, 南京 210015;
2. 南京工业大学 材料科学与工程学院, 南京 210009;
3. 四川材料与工艺研究所， 绵阳 621000)
摘 要: 研究了Al2O3-TiC和Al2O3-TiB2两个体系的多孔陶瓷的制备过程，分析和讨论了产物的相组成、 显微结构及成型性以及影响多孔陶瓷性能， 如孔径大小、 耐腐蚀性能和压缩强度的诸多因素。 实验结果表明： 布料时有序地改变反应物料的化学组成，可以在产物中不同区域产生不同尺寸的孔洞， 形成梯度多孔陶瓷。 利用燃烧合成法， 可制备出孔径尺寸为1~500μm、酸碱腐蚀质量损失率小于2%、 压缩强度为10MPa左右的多孔陶瓷。
关键字: 燃烧合成； 复合材料； 多孔陶瓷
（ 1. Institute of Electric Light Source Materials,
Nanjing University of Technology, Nanjing 210015, China;
2. College of Materials Science and Engineering,
Nanjing University of Technology,
Nanjing 210009, China;
3. Institute of Materials & Technics,
Mianyang 621000, China）
Abstract: The preparation of porous ceramics of Al2O3-TiC and Al2O3-TiB2 by combustion synthesis was presented. The phase, microstructure, compactibility of the products, and the factors influencing on the pore size, porosity, compressive strength, and corrosion resistance were analyzed and discussed. The results show that, ordinal variations in the composition of the reactants during packing can get different sized pores and produce gradient porous ceramics. The porous ceramics with the pore size of 1-500μm, less than 2% of the corrosion mass-loss rate against acid and alkali, and the compressive strength about 10MPa can be prepared by combustion synthesis.
Key words: SHS; composite; porous ceramic
