Friction and wear of steels in air and vacuum /
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Prepared at Goddard Space Flight Center.
Bibliography: p. 19.
Metal alloys were tested for sliding friction and wear characteristics in vacuum and in air. One purpose was the analysis of variations in the coefficient of friction with changes in air pressure, hardness, and type of alloy. Another purpose was the evolution of a scheme for description of wear patterns. With a Bowden-Tabor apparatus, sliders of various alloys were revolved in contact with a steel plate. Soft and hard steel, titanium, aluminum, copper, and copper-beryllium alloys were tested. Hardness of steel in the plate was varied. Visual and metallographic inspection, as well as study of microhardness traverses from below the wear interface, provided the results. Photomicrographs showing wear in the metal alloys are presented. This paper also provides graphical description of variations in the coefficient of friction. A description of observed wear patterns is accomplished by a scheme of four categories: prow formation, severe rider wear, intermediate rider wear, and mild rider wear. In each category, wear pattern is correlated with a mechanism responsible for its formation.
- Predmore, Roamer, 1937-
- Contributing Institution
- University of Illinois
- Washington, D.C. : National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the Clearinghouse for Federal Scientific and Technical Information]
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- Chicago citation style
- Predmore, Roamer, 1937-. Friction and wear of steels in air and vacuum /. 1970. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011444537. (Accessed November 21, 2018.)
- APA citation style
- Predmore, Roamer, 1937-, (1970) Friction and wear of steels in air and vacuum /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011444537
- MLA citation style
- Predmore, Roamer, 1937-. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011444537>.