Preparation and Structural Defects of Al2-xZrx＋yTi1-yO5 and Al4.54Si1.46O9.73 Multiphase Material

• 来源期刊: 结构化学
• 学科: 工学
• 关键词: 多相材料 晶体结构 缺陷 制备 高温性能 最佳添加量 固溶体 铝型材厂
• 年，卷（期）: 2012,（2）
• 页码范围: 155-160
• 页数: 6页
• 分类号: TQ174.758|TB33
• 语种: 英文

摘要

In the study, sludge from the aluminum profile factory and kaolin were used as the raw materials. Through adding ZrO2 mineralizer in different contents, Al2-xZrx＋yTi1-yO5 and Al4.54Si1.46O9.73 solid solution multiphase material was prepared to effectively inhibit the decomposition of aluminum titanate solid solution and optimize high temperature property of the multiphase material. With XRD and SEM means, crystalline structure and microstructure of each sample were characterized, and properties of each sample were tested. According to experimental results, the optimal addition amount of ZrO2 mineralizer was determined to be 1.5%. Correspondingly, contents for aluminum titanate solid solution, mullite solid solution and α-Al2O3 were 70.3%, 26.8% and 2.9% respectively, bulk density was 3.20 g/cm3, degree of porosity was 5.57%, water absorption rate was 1.74%, and the once thermal shock rupture strength retention rate was 90.52%.