The tribological properties of MoS/sub 2/ coatings in vacuum, low relative humidity and high relative humidity environments

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5955944

Panitz, J K.G.; Pope, L E; Lyons, J E; Staley, D J

We have rf-sputter deposited MoS/sub 2/ coatings onto stainless steel plates using two extremal combinations of deposition conditions. Raman spectroscopy indicates that there is a small but significant difference in the number of sulfur-sulfur bonds and the amount of amorphous material present in the two types of coatings. The friction and wear properties were evaluated within 5 days of deposition, and after being stored for 150 days in 35 to 45% relative humidity followed by over 75 days in 2% or 98% relative humidity environments. For lab air testing the coefficient of friction increased with wet storage to 0.10 +- 0.01, and the wear life decreased by a factor of three for dry storage and by a factor of ten for wet storage. The MoS/sub 2/ material with the larger amount of amorphous material has a coefficient of friction of 0.10 +- 0.013 which increased to 0.14 +- 0.04 for storage in the wet environment. The wear life of the MoS/sub 2/ coating with the greater amount of amorphous material improved significantly (by 100%) for storage in the wet environment. 31 refs., 3 figs., 2 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5955944
• Report Number(s): SAND-87-2025C; CONF-871125-7; ON: DE88001611
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360603* -- Materials-- Properties
AIR
ALLOYS
CHALCOGENIDES
CHEMICAL BONDS
CHROMIUM ALLOYS
COATINGS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
CRYSTALS
DEPOSITION
ELEMENTS
FLUIDS
FRICTION
GASES
HUMIDITY
IRON ALLOYS
IRON BASE ALLOYS
LASER SPECTROSCOPY
LUBRICANTS
MECHANICAL PROPERTIES
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
RAMAN SPECTROSCOPY
REFRACTORY METAL COMPOUNDS
SOLID LUBRICANTS
SPECTROSCOPY
SPUTTERING
STAINLESS STEELS
STEELS
STORAGE
SULFIDES
SULFUR
SULFUR COMPOUNDS
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TRIBOLOGY
ULTRAHIGH VACUUM
WEAR RESISTANCE