Accession Number : ADA258119


Title :   Fiber Coating by Sputtering for High Temperature Composites


Descriptive Note : Final technical rept. 15 May 1989-14 Aug 1992


Corporate Author : PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT ENGINES AND SPACE PROPULSION


Personal Author(s) : Emiliani, M L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a258119.pdf


Report Date : 15 Oct 1992


Pagination or Media Count : 79


Abstract : The objective of this activity was to support researchers at the University of California at Santa Barbara in their development of micromechanics models and new or improved high temperature composite systems. This was achieved through the application of sputtered and sol-gel coatings onto monolithic metal and ceramic foils and plates, respectively, as well as high strength monofilament ceramic fibers. The base program aided in the identification and deposition numerous different types of coatings for the several composite systems under evaluation at UCSB. At the conclusion of the base program, promising composite systems were identified for further study and processing via continuous sputtering and sol-gel processing. In addition to providing coated materials to UCSB, P and W also engaged in focused studies of coatings found to be promising by UCSB researchers. The base program study examined as-sputtered Y203 coatings deposited onto various substrates to understand why this coating improves the toughness of Nb-reinforced TiAl. The option program study characterized tungsten and molybdenum coatings applied by hollow cathode magnetron sputtering, and aluminum oxide coatings applied by sol-gel processing. Sputtering, Coating, Debond, Composites fracture energy, Fracture toughness, Indentation.


Descriptors :   *COMPOSITE MATERIALS , *HIGH TEMPERATURE , *COATINGS , *SPUTTERING , METALS , TEMPERATURE , FIBERS , MOLYBDENUM , SUBSTRATES , DEPOSITION , CALIFORNIA , FILAMENTS , NIOBIUM , ALUMINUM , ALUMINUM OXIDES , PLATES , OXIDES , HIGH STRENGTH , CATHODES , MAGNETRONS , TUNGSTEN , GELS , CERAMIC FIBERS , FOILS(MATERIALS) , TITANIUM , MECHANICS , IDENTIFICATION , TOUGHNESS , ENERGY , MODELS , MATERIALS , PROCESSING


Subject Categories : Refractory Fibers
      Coatings, Colorants and Finishes
      Laminates and Composite Materials


Distribution Statement : APPROVED FOR PUBLIC RELEASE