Accession Number : AD0429754


Title :   STUDY OF DUCTILE COATINGS FOR THE OXIDATION PROTECTION OF COLUMBIUM + MOLYBDENUM ALLOYS.


Descriptive Note : Bimonthly progress rept. no. 3, 1 Nov-31 Dec 63.


Corporate Author : METALS AND CONTROLS INC ATTLEBORO MASS


Report Date : 31 Jan 1964


Pagination or Media Count : 11


Abstract : Additional oxidation tests were performed on platinum and platinum-10% rhodium alloy at temperatures up to 1525 C. The effect of air flow rate was studied at 1200 C (2200 F) and 1400 C (2550 F). Also, the rate of oxidation of platinum at 1525 C (2800 F) was determined in an air flow of 24 ipm. Binary composites of platinum on columbium and molybdenum were prepared and tested. The methods used in sample preparation did not provide sufficient edge protection and several new methods are being considered. Methods were selected for preparation of coating-diffusion barrier - base metal composites. An attempt was made to form an alumina diffusion barrier on FS-85 alloy through the reaction of aluminum foil with oxide on the surface of the alloy. The film formed was not satisfactory. (Author)


Descriptors :   *OXIDATION , HEAT RESISTANT ALLOYS , HEAT RESISTANT METALS , HIGH TEMPERATURE , MOLYBDENUM ALLOYS , NIOBIUM ALLOYS , TITANIUM ALLOYS , ZIRCONIUM ALLOYS , TUNGSTEN ALLOYS , COATINGS , PLATINUM , PLATINUM ALLOYS , RHODIUM ALLOYS , DUCTILITY , DIFFUSION , INTERFERENCE , BORON COMPOUNDS , NITRIDES , ALUMINUM COMPOUNDS , OXIDES , ALUMINUM , GOLD , RHENIUM , WELDS , POROSITY , FAILURE(MECHANICS) , CLADDING


Distribution Statement : APPROVED FOR PUBLIC RELEASE