The influence of ion implantation on the near-surface mechanical properties of ceramics

Conference · Sun Dec 31 23:00:00 EST 1989

OSTI ID:6910913

McHargue, C J; O'Hern, M E ^[1]; Joslin, D L ^[2]

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1. Oak Ridge National Lab., TN (USA)
2. Tennessee Univ., Knoxville, TN (USA)

Ion implantation of ceramics such as Al{sub 2}O{sub 3} and SiC may produce a highly damaged but crystalline surface layer or an amorphous surface. The specific structure depends upon the implantation parameters. Studies using microindentation techniques show that a crystalline implanted surface has a higher hardness (by 10 to 50%) than the corresponding unimplanted crystal but the elastic modulus is essentially unchanged. The hardness and elastic modulus of amorphous implanted surfaces are less than those of the crystalline material. Estimates of the residual stress have been obtained from microindentation tests. 20 refs., 8 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6910913
• Report Number(s): CONF-900466-14; ON: DE90010139
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CORUNDUM
CRYSTAL STRUCTURE
HARDNESS
ION IMPLANTATION
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RESIDUAL STRESSES
SAPPHIRE
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES