Crystallization Behaviour of Willemite Crystalline Glazes in Presence of NiO, TiO2 and Fe2O3

被引：0
|
作者：
Tabrizian, P. [1 ]
Yekta, B. Eftekhari [1 ]
Kord, M. [1 ]
机构：
[1] Iran Univ Sci & Technol, Dept Ceram, Sch Met & Mat Engn, Tehran, Iran
来源：
TRANSACTIONS OF THE INDIAN CERAMIC SOCIETY | 2014年 / 73卷 / 01期
关键词：
Crystal morphology; Willemite; Glaze;
D O I：
10.1080/0371750X.2013.868324
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：
Crystalline glazes based on the willemite crystals (Zn2SiO4) were prepared in presence of nickel oxide, titanium oxide and iron oxide by two step heating process, i.e. glaze firing at 1200 degrees C and crystallization above differential thermal analysis crystallization peak temperature. The mechanism of crystallization of the glazes was determined. The result showed that titanium and iron oxides induced a bulk crystallization mechanism in the glaze while in the presence of nickel oxide crystallization of willemite was initiated from the surface layer. Willemite got crystallized randomly as spherulites in the nickel bearing glazes when it was applied on a horizontal substrate. However, it was crystallized as grape-like clusters in the vertical surfaces.
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页码：43 / 47
页数：5
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