Accession Number : AD0284815

Title :   REDUCTION AND CONSOLIDATION OF SUPERIOR QUALITY MOLYBDENUM ALLOYS

Corporate Author : WAH CHANG CORP ALBANY OREG

Personal Author(s) : BAROCH,EDMUND ; YIH,STEPHEN ; WONG,JAMES

Report Date : 30 SEP 1960

Pagination or Media Count : 1

Abstract : Thermitic reduction of molybdenum trioxide with calcium was successfully scaled-up and reguli weighing 50 pounds each were produced in a 14-inch diameter bomb. Techniques were developed for the electron beam melting of hydrogen-reduced molybdenum powder. Although this material contains low interstitial elements, it exhibited severe grain boundary brittleness. Physical properties of these single crystals are being determined. The electron beam melting of the thermitically-reduced molybdenum presented difficulties; primarily because of the melting configuration. The use of a remote electron beam source will be attempted to overcome power interruptions caused by volatilization of the occluded free calcium metal and calcium oxide. Additional future studies will include attempts to refine the as-cast grain size through the addition of grain inhibitors during the melting operation. (Author)

Descriptors :   *MOLYBDENUM ALLOYS, CHEMICAL ANALYSIS, ELECTRON BEAMS, HARDNESS, HYDROGEN, POWDER ALLOYS, REDUCTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE