Synergistic effects of silver films and synthetic lubricants on boundary-lubrication behavior of ceramics

Conference · Sat Oct 31 23:00:00 EST 1992

OSTI ID:6738152

Erdemir, A; Ajayi, O O; Erck, R A; Fenske, G R; Nichols, F A ^[1]; Ockers, J M ^[2]; Kar, K K; Morgan, T A ^[3]

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1. Argonne National Lab., IL (United States). Materials and Components Technology Div.
2. Illinois Univ., Urbana, IL (United States)
3. Dow Chemical Co., Midland, MI (United States)

In a study seeking to achieve low friction and low wear on ceramic materials, we investigated a new lubrication concept that explores the synergistic effect of a silver film and a recently developed synthetic oil on the boundary lubrication behavior of silicon nitride (Si[sub 3]N[sub 4]) ceramics. Friction and wear tests were performed on a wear test machine at temperatures up to 380[degree]C. Under the test conditions explored, we found that the friction coefficients of Si[sub 3]N[sub 4]/Si[sub 3]N[sub 4] test pairs during oil-lubricated sliding tests ranged from 0.1 to 0.35, and the average wear rates of ceramic pins were between 3 [times] 10[sup [minus]7] and 10[sup [minus]6] mm[sup 3] N[sup [minus]1] m[sup [minus]1], depending on test temperature. Concurrent use of lubricant oil with a silver film had a synergistic effect on both friction and wear. When silver films are used at oil-lubricated sliding interfaces, wear rates of both pins and flats were reduced to unmeasurable levels and the friction coefficients were reduced by factors of two to ten below those of the test pairs without silver films. Beneficial synergistic effects of silver films and synthetic oil on the boundary-lubrication behavior of ceramics were more pronounced at elevated test temperatures than at room temperature.

• Research Organization: Argonne National Lab., IL (United States). Materials and Components Technology Div.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6738152
• Report Number(s): ANL/MCT/CP-76367; CONF-9208207--1; ON: DE93007895
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ELEMENTS
FILMS
FRICTION
LUBRICANTS
LUBRICATING OILS
LUBRICATION
MATERIALS
METALS
NITRIDES
NITROGEN COMPOUNDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
SILVER
SINTERED MATERIALS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENTS