非晶晶化法制备高性能ZTM微纳米复相陶瓷  

Preparation of Nano-Composite ZTM Ceramics of High Mechanical Properties by In-Situ Crystallization of Amorphous Bodies

作　　者：梁叔全[1] 钟杰[1] 谭小平[1] 唐艳[1] 张勇[1] 潘安强[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《稀有金属材料与工程》2008年第A01期10-13,共4页Rare Metal Materials and Engineering

摘　　要：采用非晶晶化法制备了Si-Al-Zr-O系氧化锆增韧莫来石(ZTM)微纳米复相陶瓷。分析了不同热处理温度和氧化锆含量对材料微观结构及其力学性能的影响。锆含量为15%(质量分数)的样品在1150℃热处理后能得到较好的力学性能,断裂韧性和抗弯强度分别达到了5.13 MPa·m^(1/2),520 MPa。比用传统方法制备的ZTM陶瓷性能提高约40%。ZrO2 toughened mullite nano-composite ceramics were fabricated by in-situ crystallization of Si-Al-Zr-O amorphous bulk materials. The effect of treated temperature and ZrO content on the microstructure and mechanical properties of the composite was analyzed. The composite crystallized at 1150 ℃ exhibited the flexural strength 520 MPa and the fracture toughness 5.13 MPa·m^1/2, which were 40% higher than those of the ceramics from the common sintering process.

关 键 词：ZTM 增韧 Si-Al-Zr-O 晶化 

分 类 号：TQ174.7[化学工程—陶瓷工业]