Surface property modification of ceramics by ion beams

Conference · Mon Dec 31 23:00:00 EST 1984

OSTI ID:5379999

McHargue, C J; Farlow, G C; White, C W; Appleton, B R; Williams, J M; Sklad, P S; Angelini, P; Yust, C S

The surface mechanical and chemical properties of ion implanted ceramics reflect changes in the microstructure produced by the bombarding ions. Metastable solid solutions which contain large concentrations of lattice defects have been produced in Al/sub 2/O/sub 3/, SiC, and TiB/sub 2/. Such structures exhibit a higher micro-indentation hardness, fracture toughness, and wear resistance than unimplanted materials. Amorphous surfaces have been formed on Al/sub 2/O/sub 3/ and SiC crystals by low temperature, high fluence, or certain ion species implantation. These surfaces have a lower hardness but higher toughness than unimplanted crystals.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5379999
• Report Number(s): CONF-8506139-2; ON: DE85016368
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMORPHOUS STATE
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CHROMIUM IONS
DAMAGE
FRACTURE PROPERTIES
HARDNESS
ION IMPLANTATION
IONS
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SILICON CARBIDES
SILICON COMPOUNDS
SURFACES
TITANIUM BORIDES
TITANIUM COMPOUNDS
TITANIUM IONS
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE
ZIRCONIUM IONS