張樹格1，李先容3， 程金華1
( 1. 南京工業(yè)大學(xué)電光源材料研究所, 南京 210015;
2. 南京工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院, 南京 210009;
3. 四川材料與工藝研究所， 綿陽 621000)
摘 要: 研究了Al2O3-TiC和Al2O3-TiB2兩個體系的多孔陶瓷的制備過程，分析和討論了產(chǎn)物的相組成、 顯微結(jié)構(gòu)及成型性以及影響多孔陶瓷性能， 如孔徑大小、 耐腐蝕性能和壓縮強(qiáng)度的諸多因素。 實(shí)驗(yàn)結(jié)果表明： 布料時有序地改變反應(yīng)物料的化學(xué)組成，可以在產(chǎn)物中不同區(qū)域產(chǎn)生不同尺寸的孔洞， 形成梯度多孔陶瓷。 利用燃燒合成法， 可制備出孔徑尺寸為1~500μm、酸堿腐蝕質(zhì)量損失率小于2%、 壓縮強(qiáng)度為10MPa左右的多孔陶瓷。
關(guān)鍵字: 燃燒合成； 復(fù)合材料； 多孔陶瓷
LI Xian-rong3, CHENG Jin-hua1
（ 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
