Accession Number : AD0475754


Title :   COATED REFRACTORY METAL TECHNOLOGY - 1965. OXIDATION-RESISTANT COATINGS FOR REFRACTORY METALS.


Corporate Author : MATERIALS ADVISORY BOARD (NAS-NRC) WASHINGTON DC


Report Date : Nov 1965


Pagination or Media Count : 123


Abstract : The Coating Subpanel of the Refractory Metals Sheet Rolling Panel reviews and evaluates the current state of the art of coatings for the refractory metals columbium, molybdenum, tantalum, and tungsten. It concludes that a satisfactory technology exists to coat columbium and molybdenum for short-time oxidizing applications where temperatures are as high as 2800 to 3000 F. Coatings for tantalum are in an early stage of development. Satisfactory coatings are not available for protecting tungsten above 3500 F. A coating system, however, must be selected and optimized for each alloy, component design, and for the mission it is to perform. Detailed conclusions are presented for all aspects of coating technology. The conclusions serve as a basis for twelve recommendations concerned with advancing the state of the art. (Author)


Descriptors :   *REFRACTORY COATINGS , *CORROSION INHIBITION , REFRACTORY COATINGS , STATE OF THE ART , REPORTS , SHEETS , MOLYBDENUM ALLOYS , NIOBIUM ALLOYS , TANTALUM ALLOYS , TUNGSTEN ALLOYS , METALLURGY , MANUFACTURING , PHYSICAL PROPERTIES , SILICIDES , HIGH TEMPERATURE , INTERMETALLIC COMPOUNDS , NONDESTRUCTIVE TESTING , MECHANICAL PROPERTIES


Subject Categories : Ceramics, Refractories and Glass
      Coatings, Colorants and Finishes
      Properties of Metals and Alloys


Distribution Statement : APPROVED FOR PUBLIC RELEASE