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

被引：0
作者：
S. S. Balabanov
A. V. Belyaev
A. V. Novikova
D. A. Permin
E. Ye. Rostokina
R. P. Yavetskiy
机构：
[1] Russian Academy of Sciences,Devyatykh Institute of Chemistry of High
[2] National Academy of Sciences of Ukraine,Purity Substances
来源：
Inorganic Materials | 2018年 / 54卷
关键词：
transparent ceramics; MgAl; O; LiF doping; optical properties; electron microscopy;
D O I：
暂无
中图分类号：
学科分类号：
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 1600°C for 1 h. It has been shown that addition of LiF changes crack propagation in spinel ceramic from transgranular to intergranular.
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页码：1045 / 1050
页数：5
相关论文
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[1]  
Goldstein A.(2016)Transparent MgAl2O4/LiF ceramics by hot–pressing: host–additive interaction mechanisms issue revisited J. Eur. Ceram. Soc. 36 1731-1742
[2]  
Raethel J.(2015)Fabrication of transparent MgAl2O4 ceramics by hotpressing of sol–gel–derived nanopowders Ceram. Int. 41 13-2271
[3]  
Katz M.(2014)Low absorption magnesium aluminate spinel windows for high energy laser applications J. Mater. Res. 29 2266-151
[4]  
Balabanov S.S.(2016)Effect of Sc2O3 addition on densification and microstructure of different spinelized magnesium aluminate spinels Trans. Nonferrous Met. Soc. China 26 144-3042
[5]  
Yavetskiy R.P.(2006)Mineralizing magnesium aluminate spinel formation with B2O3 J. Am. Ceram. Soc. 89 3034-2761
[6]  
Belyaev A.V.(2005)Formation and densification behavior of magnesium aluminate spinel: the influence of CaO and moisture in the precursors J. Am. Ceram. Soc. 88 2752-599
[7]  
Villalobos G.(2014)Effect of additives on the sintering of MgAl2O4 J. Alloys Compd. 587 594-747
[8]  
Bayya S.(2013)Production and characterization of transparent MgAl2O4 prepared by hot pressing J. Eur. Ceram. Soc. 33 737-661
[9]  
Kim W.(2015)A thermodynamic approach to obtaining transparent spinel (MgAl2O4) by hot pressing J. Eur. Ceram. Soc. 35 651-3365
[10]  
Li J.(2013)Fifty years of research and development coming to fruition; unraveling the complex interactions during processing of transparent magnesium aluminate (MgAl2O4) spinel J. Am. Ceram. Soc. 96 3341-1480
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