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Friction, wear, and corrosion of laves-hardened nickel alloy hardsurfacing in sodium

Conference ·
OSTI ID:6864937
This paper represents the results of friction, wear, and corrosion tests on Tribaloy 700 specimens. The Tribaloy alloys are a family of materials typically consisting of a hard, intermetallic Laves phase dispersed in a cobalt or nickel eutectic or solid solution matrix. Only one alloy of the Tribaloy series, Tribaloy 700, is a cobalt-free nickel-base alloy. Tribaloy 700 is therefore of interest for nuclear reactor applications, where cobalt must be restricted. Tribaloy 700 rubbing against itself in sodium exhibited among the lowest friction coefficients measured for metallic materials at high temperature. Detonation-gun coatings had lower friction and lower corrosion rates than plasma coatings, in general. The wear rate of Tribaloy 700 was negligible. Surface damage resistance was good, especially when in contract with itself or other hard materials. The material also exhibited low corrosion rates in sodium.
Research Organization:
Hanford Engineering Development Lab., Richland, Wash. (USA)
DOE Contract Number:
EY-76-C-14-2170
OSTI ID:
6864937
Report Number(s):
HEDL-SA-1391; CONF-780430-6
Country of Publication:
United States
Language:
English