Effect of film composition and microstructure on microindentation response in amorphous alloy coatings
Amorphous alloy coatings were deposited onto Ni substrates by decomposing metal carbonyls (Ni(CO)/sub 4/ and Fe(CO)/sub 5/) and metalloid hydrides (PH/sub 3/ and B/sub 2/H/sub 6/) by chemical vapor deposition in an rf plasma. The chemical composition of these films was determined using Auger electron spectroscopy and the hybridization (i.e., bonding character) of the metalloids (phosphorus, boron, and carbon) has been evaluated by using Auger line-shape analysis. The amorphous/crystalline nature of these alloys was evaluated using x-ray and electron diffraction techniques. The microindentation load-depth response of these films was measured with an ultralow-load hardness tester capable of testing at loads less than 10 g and at penetration depths less than 1 ..mu..m. The results of these measurements are discussed in the light of theories which attempt to relate mechanical properties of amorphous alloys to the bonding character of the outer electrons of the component elements.
- Research Organization:
- Sandia National Laboratories, Albuquerque, New Mexico 87185
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6998562
- Journal Information:
- J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 4:6; ISSN JVTAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
AMORPHOUS STATE
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CARBONYLS
CHEMICAL COATING
CHEMICAL COMPOSITION
CHEMICAL VAPOR DEPOSITION
COATINGS
COHERENT SCATTERING
COLLISIONS
CRYSTAL STRUCTURE
DEPOSITION
DIFFRACTION
ELECTRON DIFFRACTION
ELEMENTS
FILMS
HARDNESS
HYBRIDIZATION
ION COLLISIONS
IRON BORIDES
IRON CARBIDES
IRON COMPOUNDS
IRON PHOSPHIDES
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
NICKEL
NICKEL BORIDES
NICKEL CARBIDES
NICKEL COMPOUNDS
NICKEL PHOSPHIDES
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
SCATTERING
SURFACE COATING
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VAPOR DEPOSITED COATINGS
X-RAY DIFFRACTION