Effect of ion implantation species on the tribological response of stainless steel surfaces
The friction and wear properties of 304 and 15-5 PH stainless steels which were ion implanted with P and with P plus C have been examined and are compared with the properties of the same steels implanted with N and with Ti plus C. While benefits are obtained with the P and the P plus C implantation treatments, the N and the Ti plus C treatments give greater reductions in wear, which extend to more severe wear regimes; with Ti plus C, friction is also reduced. Transmission electron microscopy shows that the P and the P plus C implantations (with 20 to 30 at. pct metalloid concentrations) produce surface alloys with amorphous phases, as do Ti plus C treatments (approximately 20 at. pct each). The greater benefits obtained with the Ti plus C amorphous phase imply that this phase is mechanically superior to the amorphous phase with P plus C, even though the latter has been shown to have excellent mechanical properties when produced by melt quenching. Based on the above studies Ti and C were selected for implantation into a 15-5 PH discriminator wheel of an electromechanical device for comparison with standard solid film lubrication (MoS/sub 2/). In comparison to a solid film lubricated wheel, the implanted wheel (unlubricated) performed equally well with respect to time of operation, number of cycles, and tolerance control; in addition, the implanted wheel produced less debris. An alternative ion beam method was used to introduce high surface concentrations of Au for control of fretting corrosion and debris generation of a journal bearing in a different electromechanical device: a sputter-deposited Au film (50 nm) on 15-5 PH stainless steel was ion bombarded with 300 keV Xe/sup -/. This treated surface was compared with a sputtered Au film without ion beam treatment, with electrodeposited Au, and with a solid lubricating film. The ion-mixed Au surface bearings had the least corrosion and debris.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- OSTI ID:
- 6344631
- Journal Information:
- J. Mater. Energy Syst.; (United States), Vol. 7:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
METALLURGICAL EFFECTS
NITROGEN
STAINLESS STEEL-304
CORROSION RESISTANCE
ION IMPLANTATION
TRIBOLOGY
WEAR RESISTANCE
TITANIUM
ELECTRODEPOSITION
FRICTION
GOLD
LUBRICATION
PHASE STUDIES
PHOSPHORUS
SPUTTERING
SURFACE TREATMENTS
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
DEPOSITION
ELECTROLYSIS
ELEMENTS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LYSIS
MATERIALS
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
NONMETALS
STAINLESS STEELS
STEELS
SURFACE COATING
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties
360105 - Metals & Alloys- Corrosion & Erosion