Fabrication of self-lubricating hard coatings by ion beam techniques. Annual progress report (Tribology Program) 1990, October 1989--September 1990
The research effort at UES, Inc. is focused at establishing optimum conditions for ion implantation/mixing of suitable additives into the surfaces of ceramics and metallic substrates. The additives chosen are: BaF{sub 2}/CaF{sub 2}/Ag, MoS{sub 2}, WS{sub 2} and B{sub 2}0{sub 3}. In the last Annual Progress Report, we reported results on our deposition and ion beam mixing of Ag/CaF2/BaF2 layered structure, and co-implantation of Mo{sup +} and S{sup +} into A1{sub 2}0{sub 3} and ZrO{sub 2} to synthesize MoS{sub 2}. In the layered structure, the layer in contact with the substrate was Ag followed by CaF{sub 2} and BaF{sub 2}. This has resulted in the higher friction coefficient and higher wear volume of the uncoated pins of A1{sub 2}0{sub 3} and ZrO{sub 2}. It should be mentioned that the layered structure remained almost undisturbed after ion irradiation. It was shown by the group at Argonne National Laboratory that the ion beam assisted Ag coating reduces the friction coefficient of A1{sub 2}0{sub 3} quite dramatically at temperatures between room and 400{degree}C. Based on this result, we decided to form a bilayer structure of CaF{sub 2}/Ag with Ag on top and also a sputtered composite layer of BaF{sub 2} + Ag.
- Research Organization:
- Universal Energy Systems, Inc., Dayton, OH (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-88CE90026
- OSTI ID:
- 10158832
- Report Number(s):
- DOE/CE/90026-2; ON: DE92016068
- Resource Relation:
- Other Information: PBD: [1990]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
BARIUM FLUORIDES
MIXING
CALCIUM FLUORIDES
SILVER
SAPPHIRE
ION IMPLANTATION
COATINGS
TRIBOLOGY
ZIRCONIUM OXIDES
PROGRESS REPORT
MOLYBDENUM SULFIDES
TUNGSTEN SULFIDES
BORON OXIDES
320302
360203
360206
MATERIALS
MECHANICAL PROPERTIES
RADIATION EFFECTS