Wear of ion implanted TiB/sub 2/ surfaces

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5385863

Yust, C S; McHargue, C J; White, C L; Angelini, P; Lewis, M B

The properties of polycrystalline titanium diboride surfaces were significanly modified by ion implantation. Nickel ion implantation at room temperature (1 x 10/sup 17/ ions/cm/sup 2/, 1 MeV) produced a damage, crystalline surface in which dislocation tangles and defects were observed to a depth of 750 nm. Surface hardness values as measured by the Knoop method were 1.7 to 2.2 times those of unimplanted material, and the indentation fracture toughness was increased 50 to 90%. Wear resistance was evaluated by pin-on-disc tests in which a diamond stylus rubs against a polished surface containing both implanted and unimplanted regions. Auger electron spectroscopy was used to identify the constituents of an adhered debris layer on the resultant wear tracks. The debris layer was found to contain some oxygen, but was composed primarily of carbon.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5385863
• Report Number(s): CONF-850952-1; ON: DE85017091
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
AUGER ELECTRON SPECTROSCOPY
BORIDES
BORON COMPOUNDS
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRON SPECTROSCOPY
ENERGY RANGE
FRACTURE PROPERTIES
HARDNESS
ION IMPLANTATION
IONS
MECHANICAL PROPERTIES
MEV RANGE
MEV RANGE 01-10
NICKEL IONS
SPECTROSCOPY
SURFACES
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE