硅酸盐通报2017，Vol.36Issue(3)：1101-1105,5.
TiO2加入量对固相烧结合成镁铝尖晶石致密化行为的影响
Effect of TiO2 Addition on Densification Behavior of Magnesium Aluminate Spinel Synthesized by Solid-state Sintering
谢鹏永 1郝长安 2罗旭东3
作者信息
- 1. 西安建筑科技大学材料与矿资学院,西安 710055
- 2. 西安秦翔科技股份有限公司,西安 710075
- 3. 辽宁科技大学高温材料与镁资源工程学院,鞍山 114051
- 折叠
摘要
Abstract
Magnesium aluminate spinel (MgAl2O4) was synthesized by solid-state sintering using low-grade magnesite and industrial α alumina fine powder as raw materials.The effect of TiO2 addition on densification behavior of magnesium aluminate spinel synthesized was discussed.The phase composition and microstructure of specimens were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that the replacement solid solution of TiO2 addition and formed magnesium aluminate spinel is the significant mechanism to promote the densification of magnesium aluminate spinel synthesized by solid-state sintering.The generation of cation vacancy and the lattice defect of magnesium aluminate spinel are in favor of crystal growth of magnesium aluminate spinel under high temperature which obtains the purpose of densification by excluding pores due to the role of steric hindrance.The extent of densification of magnesium aluminate spinel gradually increases with the increasing in amount of TiO2 content which improves the sintering properties and microstructure of magnesium aluminate spinel effectively.关键词
镁铝尖晶石/固溶体/致密化/二氧化钛Key words
magnesium aluminate/solid solution/densification/titanium dioxide分类
化学化工引用本文复制引用
谢鹏永,郝长安,罗旭东..TiO2加入量对固相烧结合成镁铝尖晶石致密化行为的影响[J].硅酸盐通报,2017,36(3):1101-1105,5.
