Accession Number : AD0767724
Title : Evaluation of Multilayer Thin Films.
Descriptive Note : Final rept. 9 May-27 Aug 73 on Phase 4,
Corporate Author : ARTECH CORP FALLS CHURCH VA
Personal Author(s) : Ordway,Fred ; Graves,James R.
Report Date : SEP 1973
Pagination or Media Count : 26
Abstract : Multilayer thin-film composites of carbon-aluminum were prepared by vacuum evaporation of alternating layers a few hundred Angstroms thick. Up to 94 pairs of successive layers were deposited to produce composite films up to 12.5 micrometers (0.0005 in.) thick. The specimens were evaporated through a photoetched metal mask to produce a 'dogbone' shape for tensile testing, and were successfully removed without breakage by applying a thin release film of gold to the glass substrate before deposition of the composite and wetting the gold film with a small quantity of mercury afterward. A method is proposed by which the true tensile strength of the composite may be determined. (Modified author abstract)
Descriptors : (*LAMINATES, *FILMS), ALUMINUM, CARBON, TENSILE PROPERTIES, VAPOR PLATING, VACUUM APPARATUS, DEPOSITION, TEST METHODS
Subject Categories : Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE