摘要
采用Sol-Gel法制备了Al2 O3-SiO2 -TiO2 -ZrO2 复合多孔膜 ,并在不同基体上进行了涂膜实验研究。结果表明 ,以孔隙率为46.8%、最可几孔径为几个微米的α -Al2 O3作基体 ,可以制备出膜厚为 1～ 2 μm纳米级孔径的Al2 O3-SiO2 -TiO2 -ZrO2 复合多孔膜 ,Al2 O3复合膜与α -Al2 O3基体的结合性最好。通过对α -Al2 O3基体分析发现 ,基体的成型压力、烧成后基体的孔径大小以及膜与基体之间的应力作用对Al2 O3-SiO2 -TiO2 -ZrO2 复合多孔膜形成影响甚大。对膜与基体的结合强度进行了研究 ,结果表明 ,膜的热稳定性高 ,耐酸、耐碱性好 ,相对硬度介于 6～
A process based on sol-gel technique had been used to deposit alumina membranes on different substrates.The results show that α-Al 2O 3 ceramic substrate with porosity 46.8% and most probable pore size of several millimeters has better adaptability performance of combination with Al 2O 3-SiO 2-TiO 2-ZrO 2 composite membranes of 1～2μm thickness and nanometer pore size in this study.The effect of shaping pressure of the substrates and pore size of ceramic substrates and the stress between membrane and substrate on properties of Al 2O 3-SiO 2-TiO 2-ZrO 2 composite membranes are important.High thermal stability and excellent chemical stability and relative hardness of 6～7 of membrane are found by elementary tests of combination intensity between membrane and substrate.
出处
《陶瓷学报》
CAS
2003年第3期133-138,共6页
Journal of Ceramics
