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The corrosion behavior of several heat resistant materials in air + 2% Cl 2 at 300 to 800 °C. Part 2 – Nickel base alloys
Author(s) -
Schwalm C.,
Schütze M.
Publication year - 2000
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/(sici)1521-4176(200002)51:2<73::aid-maco73>3.0.co;2-v
Subject(s) - alloy , corrosion , metallurgy , chemistry , microstructure , materials science , nuclear chemistry
The corrosion behavior of the alloys 59, C‐2000 and HR‐160 was investigated in dry air and in air with 2% Cl 2 at temperatures of 300 to 800 °C. Up to 500 °C Alloy 59 and Alloy C‐2000 do not exhibit any significant attack. At 650 °C in particular HR‐160 is subjected to a marked increase of the corrosion rates. In the latter case the higher amount of C compared to the other two alloys seems to decrease corrosion resistance. At 800 °C the resistance of C‐2000 is inferior to that of Alloy 59 which is attributed to differences in the microstructure consisting of Cr/Mo precipitates in the Ni‐base matrix which are primarily attacked.