Accession Number : AD0612866

Title :   PERITECTIC REACTION IN THE SUPERCONDUCTOR NB3SN (CB3SN),

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : Bachner,Frank J. ; Gatos,Harry C. ; Banus,Mario D.

Report Date : 29 JUL 1964

Pagination or Media Count : 4

Abstract : The portion of the Nb-Sn phase diagram between 75 and 79 at. pct Nb at temperatures near the liquidus has been investigated by melting alloys of known composition and examining the microstructures resulting when these melts were quenched. The Nb-Sn samples were contained in magnesia sleeves, and were mounted in a high-pressure apparatus. It was shown that Nb3Sn melts by a peritectic decomposition Nb3Sn yields alpha Nb + Liq and that the composition of the compound Nb3Sn at the peritectic horizontal lies between 77 and 78 at. pct Nb. Analysis of the phases present in the samples was accomplished by anodic staining techniques and an electron-microbeam analyzer. (Author)

Descriptors :   (*SUPERCONDUCTORS, MELTING), (*NIOBIUM ALLOYS, TIN ALLOYS), (*TIN ALLOYS, NIOBIUM ALLOYS), PHASE STUDIES, INTERMETALLIC COMPOUNDS, LIQUIDS, MICROSTRUCTURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE