Accession Number:

AD0641307

Title:

FACTORS AFFECTING THE ENDURANCE OF RUBBED LUBRICANT FILMS OF LAMELLAR SOLIDS.

Descriptive Note:

Technical rept.,

Corporate Author:

ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Personal Author(s):

• Giltrow,J. P.

Report Date:

1966-06-01

Pagination or Media Count:

20.0

Abstract:

Experiments were made, using a pin and ring machine, to measure the influence of surface roughness, humidity and chemical composition on the endurance of rubbed films of lamellar solids. An optimum film life is exhibited on substrates of roughness approximately 30-40 microns in CLA. An environment of high relative humidity during film formation leads to enhanced endurance whilst high humidity during film testing leads to reduced endurance. The coefficients of friction increase with increasing relative humidity of the environment. It is tentatively suggested that the inability of Group VA metal dichalcogenides to lubricate mild and tool steel may be due to their probable non-stoichiometric composition. Author

Descriptors:

• *LUBRICANTS
• WEAR RESISTANCE
• SOLIDS
• FILMS
• SURFACE PROPERTIES
• ROUGHNESS
• HUMIDITY
• CHEMICAL PROPERTIES
• FRICTION
• SULFIDES
• SELENIDES
• TANTALUM COMPOUNDS
• NIOBIUM COMPOUNDS
• TUNGSTEN COMPOUNDS
• MOLYBDENUM COMPOUNDS
• UNITED KINGDOM

Subject Categories:

• Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE