Surface protection of fluoroindate glasses by sol-gel dip-coated SnO2 thin layers

被引:8
作者
Rizzato, AP [1 ]
Pulcinelli, SH [1 ]
Santilli, CV [1 ]
Messaddeq, Y [1 ]
机构
[1] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
D O I
10.1016/S0022-3093(99)00394-4
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
SnO2 coatings were deposited by a sol-gel dip-coating process to shield fluoroindate glasses (40In-F-3:16BaF(2):20SrF(2):20ZnF(2):2NaF:2GaF(3)) against corrosion in aqueous environments. The effect of the number of coating applications and of the withdrawal speed on the thickness, density and roughness of tin oxide films was investigated by X-ray reflectivity. Film thickness increases both with the number of coating applications and the withdrawal speed. The aqueous leaching of uncoated and SnO2-coated fluoroindate glasses was studied by scanning electron microscopy (SEM) and infrared spectroscopy (FTIR), showing that the glass surface was protected against hydrolytic attack. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:154 / 159
页数:6
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