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Effects of thin compressive films on indentation fracture toughness measurements

Technical Report ·
OSTI ID:7172536
;
Thin compressive films have been shown to decrease the lengths of radial cracks produced by a Vickers indentation in a variety of nonmetallic materials. The intrinsic stress of submicron thick films deposited by reactive ion-beam sputtering was measured by a cantilever technique. The change in the apparent identation fracture toughness of the coated material was correlated with film thickness and stress, identation load, and the nature of the substrate.
Research Organization:
Rockwell International Corp., Thousand Oaks, CA (USA). Science Center
OSTI ID:
7172536
Report Number(s):
AD-A-192243/4/XAB
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
BEAMS
COATINGS
CRACKS
DEPOSITION
ELEMENTS
ENERGY BEAM DEPOSITION
FILMS
FRACTURE PROPERTIES
GLASS
ION BEAMS
MECHANICAL PROPERTIES
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
PNICTIDES
PROTECTIVE COATINGS
SILICON COMPOUNDS
SILICON NITRIDES
SPUTTERING
SURFACE COATING
THIN FILMS