The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand

Research into in-situ MgB(2) strand has been focused on improvements in J(C) through reduction of porosity. Both of cold-high-pressure-densification (CHPD) and advanced-internal-magnesium-infiltration (AIMI) techniques can effectively remove the voids in in-situ MgB(2) strands. This study shows the...

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Autores principales: Wan, F, Sumption, M D, Rindfleisch, M A, Collings, E W
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8475811/
https://www.ncbi.nlm.nih.gov/pubmed/34584538
http://dx.doi.org/10.1088/1757-899x/756/1/012018
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author Wan, F
Sumption, M D
Rindfleisch, M A
Collings, E W
author_facet Wan, F
Sumption, M D
Rindfleisch, M A
Collings, E W
author_sort Wan, F
collection PubMed
description Research into in-situ MgB(2) strand has been focused on improvements in J(C) through reduction of porosity. Both of cold-high-pressure-densification (CHPD) and advanced-internal-magnesium-infiltration (AIMI) techniques can effectively remove the voids in in-situ MgB(2) strands. This study shows the nature of the reduced porosity for in-situ MgB(2) strands lies on increases in transverse grain connectivity as well as longitudinal connectivity. The CHPD method bi-axially applying 1.0 GPa and 1.5 GPa yielded 4.2 K J(CM∥)s of 9.6 × 10(4) A/cm(2) and 8.5 × 10(4) A/cm(2) at 5 T, respectively, with compared with 6.0 × 10(4) A/cm(2) for typical powder-in-tube (PIT) in-situ strand. Moreover, AIMI-processed monofilamentary MgB(2) strand obtained even higher J(C)s and transverse grain connectivity than the CHPD strands.
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spelling pubmed-84758112021-09-27 The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand Wan, F Sumption, M D Rindfleisch, M A Collings, E W IOP Conf Ser Mater Sci Eng Article Research into in-situ MgB(2) strand has been focused on improvements in J(C) through reduction of porosity. Both of cold-high-pressure-densification (CHPD) and advanced-internal-magnesium-infiltration (AIMI) techniques can effectively remove the voids in in-situ MgB(2) strands. This study shows the nature of the reduced porosity for in-situ MgB(2) strands lies on increases in transverse grain connectivity as well as longitudinal connectivity. The CHPD method bi-axially applying 1.0 GPa and 1.5 GPa yielded 4.2 K J(CM∥)s of 9.6 × 10(4) A/cm(2) and 8.5 × 10(4) A/cm(2) at 5 T, respectively, with compared with 6.0 × 10(4) A/cm(2) for typical powder-in-tube (PIT) in-situ strand. Moreover, AIMI-processed monofilamentary MgB(2) strand obtained even higher J(C)s and transverse grain connectivity than the CHPD strands. 2020-06-29 2020 /pmc/articles/PMC8475811/ /pubmed/34584538 http://dx.doi.org/10.1088/1757-899x/756/1/012018 Text en https://creativecommons.org/licenses/by/3.0/Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd
spellingShingle Article
Wan, F
Sumption, M D
Rindfleisch, M A
Collings, E W
The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title_full The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title_fullStr The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title_full_unstemmed The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title_short The Role of CHPD and AIMI processing on enhancing J(C) and transverse connectivity of in-situ MgB(2) strand
title_sort role of chpd and aimi processing on enhancing j(c) and transverse connectivity of in-situ mgb(2) strand
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8475811/
https://www.ncbi.nlm.nih.gov/pubmed/34584538
http://dx.doi.org/10.1088/1757-899x/756/1/012018
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