Accession Number : AD0269975

Title :   DEVELOPMENT OF REFRACTORY COMPOSITE MATERIALS SYSTEMS FOR SOLID PROPELLANT ROCKET MOTORS.

Descriptive Note : Quarterly progress rept. no. 4,

Corporate Author : HUGHES TOOL CO CULVER CITY CALIF

Personal Author(s) : Leggett ,H. ; Urode,R. J.

Report Date : 20 JUL 1961

Pagination or Media Count : 77

Abstract : Difficulties encountered in deposition of metals from metal halide vapor dissociation were primarily caused by the vapor transport system and the difficulty in attaining a leak proof system. Efforts to circumvent and eliminate these difficulties showed extremely promising results. Depositions of Ta showed conclusively that the method is applicable for obtaining fine grained adherent coatings of TaC. The most successful carbide formations by direct union were those of Ta, Mo and V. Excellent coatings of TaC were obtained when thin Mo coatings were used as an intermediate layer. Hard, adherent, Mo2C coatings were produced at all temperatures above 3400 F. Coatings of VC, identified by X-ray diffraction, were produced at a temperature of 3400 F. The compounding of chemically bonded THO2 and Mo wire-chemically bonded ZrO2 composites was shown to be feasible. (Author)

Descriptors :   *GRAPHITE, *HIGH TEMPERATURE, *REFRACTORY COATINGS, *REFRACTORY MATERIALS, *ROCKET NOZZLES, *THORIUM COMPOUNDS, *ZIRCONIUM COMPOUNDS, CARBIDES, CARBON, CERAMIC MATERIALS, CHEMICAL REACTIONS, COATINGS, COMPOSITE MATERIALS, HALIDES, IODIDES, MANUFACTURING, MELTING, METALS, MOLYBDENUM COMPOUNDS, REINFORCING MATERIALS, TANTALUM COMPOUNDS, VANADIUM COMPOUNDS, VAPOR PLATING, WIRE

Distribution Statement : APPROVED FOR PUBLIC RELEASE