Densification Peculiarities of Transparent MgAl2O4 Ceramics-Effect of LiF Sintering Additive

被引：19

作者：

Balabanov, S. S. ^{[1
]}

Belyaev, A., V ^{[1
]}

Novikova, A., V ^{[1
]}

Permin, D. A. ^{[1
]}

Rostokina, E. Ye ^{[1
]}

Yavetskiy, R. P. ^{[2
]}

机构：

[1] Russian Acad Sci, Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod 603951, Russia

[2] Natl Acad Sci Ukraine, Inst Single Crystals, UA-61072 Kharkov, Ukraine

来源：

INORGANIC MATERIALS | 2018年 / 54卷 / 10期

关键词：

transparent ceramics; MgAl2O4; LiF doping; optical properties; electron microscopy; MAGNESIUM ALUMINATE SPINEL; MICROSTRUCTURE;

D O I：

10.1134/S0020168518100023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new method of doping of spinel nanopowders with LiF sintering additive has been proposed, consisting in its introduction via solution technology, which leads to improved sinterability of the ceramic. The effect of LiF doping on densification behavior, microstructure, and optical and mechanical properties of hot-pressed MgAl2O4 ceramics has been studied. Samples of MgAl2O4 optical ceramics with density close to that theoretically achievable have been produced by hot pressing of 0.5 wt % LiF-doped nanopowders at 1600A degrees C for 1 h. It has been shown that addition of LiF changes crack propagation in spinel ceramic from transgranular to intergranular.

引用

页码：1045 / 1050

页数：6

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