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Study on niobium carbide dispersed superconducting tapes

Abstract

Niobium carbide (NbC) dispersed superconducting tapes have been fabricated by two metallurgical processes. In the first process, Ni-Nb-C alloys are directly arc melted and hot worked in air and the NbC phase is distributed in the form of fine discrete particles. In the second process, Ni-Nb and Ni-Nb-Cu alloys are arc melted, hot worked and subjected to solid-state carburization. NbC then precipitates along the grain boundaries, forming a network. The highest superconducting transition temperature attained is about 11 K. Taken together with the lattice parameter measurement, this indicates that NbC with a nearly perfect NaCl structure is formed in both processes. Measured values of the upper critical field, the critical current density and the volume fraction of the NbC phase are also discussed.
Authors:
Wada, H; Tachikawa, K; [1]  Oh'asa, M [2] 
  1. National Research Inst. for Metals, Tokyo (Japan)
  2. Science Univ. of Tokyo (Japan)
Publication Date:
Nov 01, 1977
Product Type:
Journal Article
Reference Number:
AIX-09-367282; EDB-78-080081
Resource Relation:
Journal Name: J. Less-Common Met.; (Switzerland); Journal Volume: 56:1
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COPPER ALLOYS; TRANSITION TEMPERATURE; NICKEL ALLOYS; NIOBIUM CARBIDES; CARBURIZATION; CRITICAL FIELD; CURRENT DENSITY; DUCTILITY; GRAIN BOUNDARIES; HOT WORKING; INTERMETALLIC COMPOUNDS; NIOBIUM ALLOYS; PRECIPITATION; SUPERCONDUCTING COMPOSITES; ALLOYS; CARBIDES; CARBON COMPOUNDS; COMPOSITE MATERIALS; CRYSTAL STRUCTURE; FABRICATION; HARDENING; MAGNETIC FIELDS; MATERIALS WORKING; MECHANICAL PROPERTIES; MICROSTRUCTURE; NIOBIUM COMPOUNDS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SURFACE HARDENING; SURFACE TREATMENTS; TENSILE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 656102 - Solid State Physics- Superconductivity- Acoustic, Electronic, Magnetic, Optical, & Thermal Phenomena- (-1987)
OSTI ID:
5071634
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JCOMA
Submitting Site:
INIS
Size:
Pages: 1-8
Announcement Date:

Citation Formats

Wada, H, Tachikawa, K, and Oh'asa, M. Study on niobium carbide dispersed superconducting tapes. Switzerland: N. p., 1977. Web. doi:10.1016/0022-5088(77)90213-2.
Wada, H, Tachikawa, K, & Oh'asa, M. Study on niobium carbide dispersed superconducting tapes. Switzerland. doi:10.1016/0022-5088(77)90213-2.
Wada, H, Tachikawa, K, and Oh'asa, M. 1977. "Study on niobium carbide dispersed superconducting tapes." Switzerland. doi:10.1016/0022-5088(77)90213-2. https://www.osti.gov/servlets/purl/10.1016/0022-5088(77)90213-2.
@misc{etde_5071634,
title = {Study on niobium carbide dispersed superconducting tapes}
author = {Wada, H, Tachikawa, K, and Oh'asa, M}
abstractNote = {Niobium carbide (NbC) dispersed superconducting tapes have been fabricated by two metallurgical processes. In the first process, Ni-Nb-C alloys are directly arc melted and hot worked in air and the NbC phase is distributed in the form of fine discrete particles. In the second process, Ni-Nb and Ni-Nb-Cu alloys are arc melted, hot worked and subjected to solid-state carburization. NbC then precipitates along the grain boundaries, forming a network. The highest superconducting transition temperature attained is about 11 K. Taken together with the lattice parameter measurement, this indicates that NbC with a nearly perfect NaCl structure is formed in both processes. Measured values of the upper critical field, the critical current density and the volume fraction of the NbC phase are also discussed.}
doi = {10.1016/0022-5088(77)90213-2}
journal = {J. Less-Common Met.; (Switzerland)}
volume = {56:1}
journal type = {AC}
place = {Switzerland}
year = {1977}
month = {Nov}
}