Effect of implantation species on the tribological response of stainless steel surfaces. [SS-15-5PH]
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. % metalloid concentrations) produce surface alloys with amorphous phases, as do Ti plus C treatments (approximately 20 at. % 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. 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 alternate ion beam method was used to add high surface concentrations to control 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 Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6359130
- Report Number(s):
- SAND-84-1286C; CONF-841116-1; ON: DE85003530
- Resource Relation:
- Conference: ASM conference on coatings and bimetallics for energy systems and chemical process environments, Hilton Head Island, SC, USA, 13 Nov 1984; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STAINLESS STEEL-304
ION IMPLANTATION
STAINLESS STEELS
CARBON IONS
FRICTION
NITROGEN IONS
PHOSPHORUS IONS
TRANSMISSION ELECTRON MICROSCOPY
WEAR
ALLOYS
CHARGED PARTICLES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELECTRON MICROSCOPY
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSCOPY
NICKEL ALLOYS
STEELS
360106* - Metals & Alloys- Radiation Effects