CU-NB POWDER METALLURGY PREFORM

PURPOSE:To improve the plastic workability of the titled preform by regulating the oxygen content in the Cu-Nb powder metallurgy preform as the material of an Nb3Sn superconductive material to the specific ratio or below for the Nb content. CONSTITUTION:Powdery NbH and Cu are mixed in such a manner...

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Bibliographic Details
Main Authors MIYATAKE TAKAYUKI, OGAWA RIKURO
Format Patent
LanguageEnglish
Published 09.12.1988
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To improve the plastic workability of the titled preform by regulating the oxygen content in the Cu-Nb powder metallurgy preform as the material of an Nb3Sn superconductive material to the specific ratio or below for the Nb content. CONSTITUTION:Powdery NbH and Cu are mixed in such a manner that the Nb amt. is regulated to 10-50wt.% and are sintered in a vacuum by hot isostatic pressing to produce the Cu-Sb powder metallurgy preform. In this case, the Nb content in the Cu-Sb powder metallurgy preform is regulated to 10-50wt.% and the oxygen content is regulated to the amt. which is expressed by the following inequality (O) <=15 (Nb), where the unit of (O) is specified to ppm and the unit of (Nb) is specified to %. Since said powder metallurgy preform has excellent plastic workability and is easily formed into a long size wire rod, it can efficiently be utilized as the material for a superconductive material such as an Nb3-Sn super conductive wire rod, etc.
Bibliography:Application Number: JP19870139525