In situ ultrahigh vacuum friction measurement and wear track analysis of ion implanted 304 stainless steel

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

OSTI ID:5681555

Pope, L E; Follstaedt, D M; Knapp, J A; Barbour, J C

The dual ion implantation of Ti and C into 304 stainless steel has been found to reduce friction and wear in uhv. The implantation treatment producting this result, 4.6 x 10/sup 17/ Ti/cm/sup 2/ (180 keV) followed by 2.0 x 10/sup 17/ C/cm/sup 2/ (50 keV), produced TiC precipitates dispersed in an amorphous surface layer. Friction and wear track compositions were measured in situ with a scanning Auger microprobe without removing the pin from the track. This treatment decreased the friction coefficient from 1.2 to 0.6 to 0.8 and the wear track width from 342 ..mu..m after 1000 cycles. Relative to unimplanted 304, wear tracks formed in uhv and air on implanted 304 had more N and less C, with O and the metallic elements similar in concentration, in addition to the presence of Ti. Friction coefficients measured in air were less than those in uhv; track composition suggests that oxides or adsorbed moisture (and perhaps hydrocarbons) helped lower the friction in air. 22 refs., 3 figs., 1 tab.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5681555
• Report Number(s): SAND-87-1607C; CONF-871124-25; ON: DE88004537
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106* -- Metals & Alloys-- Radiation Effects
AIR
ALLOYS
AUGER ELECTRON SPECTROSCOPY
CARBIDES
CARBON COMPOUNDS
CARBON IONS
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
CRYSTALLIZATION
ELECTRON SPECTROSCOPY
FILMS
FLUIDS
FRICTION
GASES
HARDENING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HELIUM IONS
ION IMPLANTATION
IONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MEASURING METHODS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
PHASE TRANSFORMATIONS
PRECIPITATION HARDENING
SPECTROSCOPY
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
SURFACE PROPERTIES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TITANIUM IONS
TRANSITION ELEMENT COMPOUNDS
ULTRAHIGH VACUUM
WEAR
YIELD STRENGTH