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RESEARCH PAPERS

The Corrosion of a 50Cr-50Ni Alloy in Liquid Vanadate Systems in the Temperature Range 750–950°C

[+] Author and Article Information
R. B. Dooley, J. R. Wilson

Metallurgical Engineering, Nicol Hall, Queen’s University, Kingston, Ontario, Canada

J. Eng. Power 97(3), 422-428 (Jul 01, 1975) (7 pages) doi:10.1115/1.3446025 History: Received August 29, 1974; Online July 14, 2010

Abstract

A 50Cr-50Ni commercial alloy has been corroded in pure V2 O5 and in vanadate melts containing sodium, sulphate, and chloride in the temperature range 750–950° C in a rotating disk apparatus. The results are discussed in terms of the material’s capability of forming a protective barrier layer and the subsequent dissolution of this layer into the liquid vanadate melt. Marked internal oxidation of a chromium rich phase has been noted throughout the temperature range. At 750 and 810° C this is associated only with chloride containing melts, but at 950° C the attack, while enhanced by chloride, also occurs in nonchloride melts.

Copyright © 1975 by ASME
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