Dynamics of solid dispersions in oil during the lubrication of point of contacts. Part 2: molybdenum disulfide

Technical Report · Thu Jan 01 00:00:00 EST 1981

OSTI ID:5936431

Cusano, C; Sliney, H E

A Hertzian contact consisting of a steel ball in contact with a glass disk is lubricated with MoS2 dispersions and observed by optical microscopy at various slide/roll conditions. In general the behavior of MoS2 and graphite are similar. That is, the solids tend to enter the contact and form a film on the contacting surfaces whenever a rolling component of motion is used, but solid particles seldom enter the contact during pure sliding. The MoS2 has more pronounced plastic flow behavior than graphite. However, the polished steel ball is more readily scratched by MoS2 than by graphite. Under the conditions of these studies, lower friction and wear are observed with pure oil rather than with the dispersions. However under other conditions (such as different contact geometry or rougher surfaces) the solid lubricant dispersions might be beneficial.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
• OSTI ID: 5936431
• Report Number(s): NASA-TM-81709
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LUBRICATING OILS
DISPERSIONS
MOLYBDENUM SULFIDES
BALL BEARINGS
FRICTION
WEAR
BEARINGS
CHALCOGENIDES
LUBRICANTS
MOLYBDENUM COMPOUNDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360603* - Materials- Properties