Specific features of the wear of zirconium in gaseous atmospheres at different temperatures

We study the tribological behavior of zirconium in air, hydrogen, and vacuum at temperatures of 20 and 100°C. In case of friction in air, the plastic deformation of microasperities on the surface is discovered. As temperature becomes higher, the degree of wear of the metal increases by 10–15%. In hy...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2013-05, Vol.48 (6), p.747-751
Main Authors: Arendar, L. А., Vasyliv, Kh. B., Vinar, V. А., Rud’kovs’kyi, E. M.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Friction
Hydrogen
Hydrogen embrittlement
Hydrogen storage
Materials Science
Microcracks
Plasticity
Seizing
Solid Mechanics
Structural Materials
Tribology
Wear
Zirconium
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Summary:We study the tribological behavior of zirconium in air, hydrogen, and vacuum at temperatures of 20 and 100°C. In case of friction in air, the plastic deformation of microasperities on the surface is discovered. As temperature becomes higher, the degree of wear of the metal increases by 10–15%. In hydrogen, the plasticity of the metal decreases and microcracks are formed on the friction surface. The number of these microcracks noticeably increases at a temperature of 100°C. Finely divided wear products are also formed on the friction surface, probably as a result of the formation and brittle fracture of zirconium hydrides. The character of wear of zirconium in a vacuum reveals the presence of seizure of the contacting surfaces and repeated crushing of the formed bulges on the friction surfaces. At a temperature of 100°C, the degree of wear of the metal decrease due to the increase in its plasticity.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-013-9564-8