HOT CORROSION STUDIES OF ZIRCONIA CERAMICS

被引：59
作者：
JONES, RL
WILLIAMS, CE
机构：
[1] US Naval Research Lab, Washington,, DC, USA, US Naval Research Lab, Washington, DC, USA
来源：
SURFACE & COATINGS TECHNOLOGY | 1987年 / 32卷 / 1-4期
关键词：
CERAMIC MATERIALS - Chemical Attack - GAS TURBINES - Protective Coatings - REFRACTORY MATERIALS - Zirconia - SALTS - Molten - VANADIUM COMPOUNDS - Chemical Reactions;
D O I：
10.1016/0257-8972(87)90119-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The corrosion of stabilized zirconia ceramics by vanadic salts at 700-900 degree C was investigated to elucidate the mechanisms of attack, and to determine the effects of the chemical reactivity of the stabilizing oxide (CeO//2, Y//2O//3) and of the physical structure of the zirconia (sintered, rapidly solidified (RS), single crystal (SC)). The SC and RS zirconias were less degraded in molten NaVO//3 than was sintered zirconia. The results are discussed in terms of understanding ceramic molten salt corrosion, and the development of corrosion-resistant stabilized zirconias. Stabilized zirconia ceramics are being developed for use as blade coatings in gas turbines.
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页码：349 / 358
页数：10
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