Three examples of high-temperature corrosion of metals by molten glasses

被引：11
|
作者：
Rapin, C [1 ]
Vilasi, M [1 ]
Podor, R [1 ]
Carton, A [1 ]
Gaillard-Allemand, B [1 ]
Berthod, P [1 ]
Steinmetz, P [1 ]
机构：
[1] Fac Sci, Lab Chim Solide Mineral, UMR 7555, F-54506 Vandoeuvre Les Nancy, France
来源：
HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS | 2004年 / 461-464卷
关键词：
corrosion; metal; molten glass; redox; basicity; high-temperature;
D O I：
10.4028/www.scientific.net/MSF.461-464.1125
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of glass redox, glass basicity and glass temperature on the metallic material corrosion in molten glass are illustrated with regard to three examples. a) The corrosion of a platinum alloy immersed in a Te-bearing glass under reducing conditions is due to the formation of low melting temperature PtxTe1-x compounds. b) The corrosion of a Ni-base superalloy immersed in a Mo-bearing glass in a reducing atmosphere is due to the dissolution of the chromia protective scale. Indeed the cathodic reaction (Mo(VI)lozenge Mo-III) generates O2- ions which can promote the basic dissolution of Cr2O3. c) The corrosion of a Co-base superalloy in molten C-glass is investigated as a function of temperature, yielding to the demonstration of the existence of a maximum using temperature, characterized by a passive-to-active state transition.
引用
收藏
页码：1125 / 1132
页数：8
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