Low-cost preparation and characterization of MgAl2O4 ceramics

被引：18

作者：

Zhou, Yi ^{[1
,2
]}

Ye, Dongcheng ^{[1
,2
]}

Wu, Yaqun ^{[1
,2
]}

Zhang, Chengxia ^{[1
,2
]}

Bai, Wei ^{[1
,2
]}

Tian, Yuming ^{[1
,2
,3
]}

Qin, Mei ^{[1
,2
]}

机构：

[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan, Peoples R China

[2] Taiyuan Univ Sci & Technol, Collaborat Innovat Ctr Key Basic Mat Shanxi Prov, Taiyuan, Peoples R China

[3] Shanxi Inst Sci & Technol, Dept Mat Sci & Engn, Jincheng, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2022年 / 48卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Spinel; Low-cost; Solid solution; Phase evolution; Flexural strength; ALUMINA; DENSIFICATION; BEHAVIOR; SPINELS;

D O I：

10.1016/j.ceramint.2021.11.196

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Low-cost magnesium aluminate spinet ceramics were successfully synthesized from the minerals of magnesite(M) and bauxite(B) via the one-step sintering method. The effect of the ratio of bauxite to magnesite on the phase evolution, microstructure, as well as the mechanical properties was thoroughly investigated. The phase structural analysis indicated that Mg2+ or Al2+ ions were dissolved in the spinet lattice and formed Mg-rich/Al-rich spinet MgAl2O4 (MA). The microstructure analysis revealed that the liquid phase gradually appeared with the increment of bauxite content. Appropriate but not saturated cation solution had the effects of structural densification, homogenization of crystal grains, and the enhancement of strength. Ceramics with 1.31 bauxite to magnesite stoichimetric ratio exhibited the highest density of 3.43 g/cm(3) and flexural strength of 93.5 MPa.

引用

页码：7316 / 7319

页数：4

共 22 条

[1] Thermal shock behaviour of magnesia-spinel composites [J].