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U.S. Department of Energy
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Adhesion and friction of transition metals in contact with nonmetallic hard materials

Conference ·
OSTI ID:5848312

Sliding friction experiments were conducted with the metals yttrium, titanium, tantalum, zirconium, vanadium, neodymium, iron, cobalt, nickel, tungsten, platinum, rhenium, ruthenium, and rhodium in sliding contact with single crystal diamond, silicon carbide, pyrolytic boron nitride, and ferrite. Auger electron spectroscopy analysis was conducted with the metals and nonmetals to determine the surface chemistry and the degree of surface cleanliness. The results of the investigation indicate the adhesion and friction of the transition metals in contact with diamond, silicon carbide, boron nitride, and ferrite are related to the relative chemical activity of the metals. The more chemically active the metal, the higher the coefficient of friction and the greater amount of transfer to the nonmetals.

Research Organization:
National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
OSTI ID:
5848312
Report Number(s):
NASA-TM-82605
Country of Publication:
United States
Language:
English