Accession Number : AD0836794

Title :   DEVELOPMENT OF CARBON-FILAMENT-REINFORCED METALS.

Descriptive Note : Final rept. 1 May 67-30 Apr 68,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS

Personal Author(s) : Niesz, Dale E.

Report Date : JUN 1968

Pagination or Media Count : 94

Abstract : An investigation was conducted to develop and evaluate carbon-filament-reinforced nickel. Dense composites which had uniform microstructures, essentially continuous filaments, and a relatively high-purity, phosphorus-free-nickel matrix were fabricated by precompacting and hot-isostatically pressing aligned bundles of filaments to which the nickel matrix had been applied as uniform coatings on the individual filaments by electroless deposition. Microstructural stability was evaluated, and porosity formation was noted after the 2200 F anneal. Preliminary oxidation tests were conducted, but internal oxidation prevented a meaningful evaluation of the oxidation resistance of the material. Thermal-expansion measurements showed that the total expansion to 1800 F was essentially zero parallel with the filaments and that the transverse expansion was between 10 and 12 x 10 to the minus sixth power inches per inch per degree F. (Author)

Descriptors :   *REINFORCING MATERIALS), (*COMPOSITE MATERIALS, SYNTHETIC FIBERS), (*NICKEL, CARBON FIBERS, ELECTROLESS PLATING, WHISKERS(CRYSTALS), MODULUS OF ELASTICITY, MICROSTRUCTURE, FRACTOGRAPHY, DENSITY.

Subject Categories : Refractory Fibers
      Laminates and Composite Materials
      Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE