Tribological and mechanical properties of Fe/Ti multilayered films

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.1557/PROC-188-301· OSTI ID:6838446

Nastasi, M; Hirvonen, J-P; Jervis, T R; Basu, S N

A 900 {angstrom} as-deposited multilayered structure of alternating Fe and Ti on hardened tool steel has been examined for tribological and mechanical properties. The multilayer in contact with a 521000 steel ball counter surface possessed a 0.16 friction coefficient and showed good wear character after 1000 cycles in pin-on-disk experiments. Nanoindentation experiments show a 20% increase in hardness for material in the wear track. Electron microscopy shows that the as-deposited bcc-Fe plus hcp-Ti multilayer composite transforms to a nanocrystalline alloy plus bcc-Fe by solid state reaction during pin-on-disk friction and wear tests. The low friction observed in these surface films is attributed to the formation of a hard nanocrystalline alloy and improved interlayer and film/substrate adhesion which result during solid state reaction. 10 refs., 4 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOD; DOE/DP
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6838446
• Report Number(s): LA-UR-90-1524; CONF-900466--49; ON: DE90011949; CNN: DI0-90-2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CRYSTAL STRUCTURE
ELEMENTS
FILMS
FRICTION
IRON
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
STEELS
THIN FILMS
TITANIUM
TRANSITION ELEMENTS
TRIBOLOGY
WEAR