Accession Number : AD0818439

Title :   FUNDAMENTAL INVESTIGATION OF MOLYBDENUM DISULFIDE AS A SOLID LUBRICANT.

Descriptive Note : Final technical rept. 15 Apr 66-15 May 67,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX DEPT OF AEROSPACE PROPULSION RESEARCH

Personal Author(s) : Tyler, J. C. ; Ku, P. M.

Report Date : 15 JUN 1967

Pagination or Media Count : 51

Abstract : The basic test facility developed in the first year of this continued program was employed for performing torsion, shear, adhesion, cohesion, and static friction experiments on cylindrically shaped molybdenum disulfide (MoS2) specimens in room atmosphere. Compression, tension, and shear experiments were then performed in the basic test facility in a moderate vacuum. The moduli of elasticity for vacuum tests in compression and tension were determined over a wide range of specimen specific gravities. An oscillating friction test facility for performing sliding friction experiments on crossed-cylindrical shaped specimens in a controlled atmosphere or in a high vacuum was designed, fabricated, and put into operation. Compacts of reference MoS2 powder and a commercially available MoS2 powder were made, without binder, over a wide range of specific gravities, for performing the various tests. An x-ray diffraction analysis of both pressure-formed and explosively-formed MoS2 compacts was made to determine preferred orientation, crystallite size, and crystallite strain. A limited amount of compaction work was performed on composite materials, MoS2 being the primary constituent. This work consisted of compression, tensile, and shear experiments using the basic test facility, and sliding friction experiments employing the oscillating friction test facility. (Author)

Descriptors :   *SULFIDES), (*LUBRICANTS, MOLYBDENUM COMPOUNDS), (*MOLYBDENUM COMPOUNDS, SOLIDS, SHEAR STRESSES, ADHESION, FRICTION, COMPRESSIVE PROPERTIES, MEASUREMENT, TENSILE PROPERTIES, VACUUM, COMPACTING, POWDERS.

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE