Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors

K. Iida; N. H. Babu; S. Pathak; Y. Shi; W. K. Yeoh; T. Miyazaki; N. Sakai; M. Murakami; D. A. Cardwell

doi:10.1016/j.mseb.2008.03.012

Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors

K. Iida, N. H. Babu, S. Pathak, Y. Shi, W. K. Yeoh, T. Miyazaki, N. Sakai, M. Murakami, D. A. Cardwell

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A pseudo Time-Temperature-Transformation (TTT) diagram has been constructed for the optimum melt processing conditions for the fabrication of large, single grain Ag-doped Y-Ba-Cu-O (YBCO/Ag) bulk superconductors. The thermal conditions for the formation of homogeneous nuclei have been investigated and the boundary between this region and that for no grain nucleation has been mapped as a function of holding time. YBCO/Ag bulk samples grow typically in the form of single grains when the processing temperature profile lies within the 'no nucleation' region of the pseudo TTT diagram. However, by studying the YBCO/Ag growth process, some samples have been grown in the form of single grains by employing a temperature profile within the homogeneous grain nucleation region of the phase diagram. Such growth may be achieved when the YBCO/Ag phase constitutes the majority of the volume of the pellet before the growth temperature reaches that at the nucleation boundary. A large, single YBCO/Ag grain of diameter 30 mm has been fabricated successfully based on these studies by both cold-seeding and seeded infiltration growth techniques.

Original language	English
Pages (from-to)	2-6
Number of pages	5
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	151
Issue number	1
DOIs	https://doi.org/10.1016/j.mseb.2008.03.012
Publication status	Published - 2008 Jun 15

Keywords

Cold-seeding
Melt-texture
Single grain
TTT diagram
YBCO/Ag

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mseb.2008.03.012

Cite this

Iida, K., Babu, N. H., Pathak, S., Shi, Y., Yeoh, W. K., Miyazaki, T., Sakai, N., Murakami, M., & Cardwell, D. A. (2008). Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 151(1), 2-6. https://doi.org/10.1016/j.mseb.2008.03.012

@article{1bc2a9fb1c084a8892a51b2387aa22ac,

title = "Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors",

abstract = "A pseudo Time-Temperature-Transformation (TTT) diagram has been constructed for the optimum melt processing conditions for the fabrication of large, single grain Ag-doped Y-Ba-Cu-O (YBCO/Ag) bulk superconductors. The thermal conditions for the formation of homogeneous nuclei have been investigated and the boundary between this region and that for no grain nucleation has been mapped as a function of holding time. YBCO/Ag bulk samples grow typically in the form of single grains when the processing temperature profile lies within the 'no nucleation' region of the pseudo TTT diagram. However, by studying the YBCO/Ag growth process, some samples have been grown in the form of single grains by employing a temperature profile within the homogeneous grain nucleation region of the phase diagram. Such growth may be achieved when the YBCO/Ag phase constitutes the majority of the volume of the pellet before the growth temperature reaches that at the nucleation boundary. A large, single YBCO/Ag grain of diameter 30 mm has been fabricated successfully based on these studies by both cold-seeding and seeded infiltration growth techniques.",

keywords = "Cold-seeding, Melt-texture, Single grain, TTT diagram, YBCO/Ag",

author = "K. Iida and Babu, {N. H.} and S. Pathak and Y. Shi and Yeoh, {W. K.} and T. Miyazaki and N. Sakai and M. Murakami and Cardwell, {D. A.}",

year = "2008",

month = jun,

day = "15",

doi = "10.1016/j.mseb.2008.03.012",

language = "English",

volume = "151",

pages = "2--6",

journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

issn = "0921-5107",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors

AU - Iida, K.

AU - Babu, N. H.

AU - Pathak, S.

AU - Shi, Y.

AU - Yeoh, W. K.

AU - Miyazaki, T.

AU - Sakai, N.

AU - Murakami, M.

AU - Cardwell, D. A.

PY - 2008/6/15

Y1 - 2008/6/15

N2 - A pseudo Time-Temperature-Transformation (TTT) diagram has been constructed for the optimum melt processing conditions for the fabrication of large, single grain Ag-doped Y-Ba-Cu-O (YBCO/Ag) bulk superconductors. The thermal conditions for the formation of homogeneous nuclei have been investigated and the boundary between this region and that for no grain nucleation has been mapped as a function of holding time. YBCO/Ag bulk samples grow typically in the form of single grains when the processing temperature profile lies within the 'no nucleation' region of the pseudo TTT diagram. However, by studying the YBCO/Ag growth process, some samples have been grown in the form of single grains by employing a temperature profile within the homogeneous grain nucleation region of the phase diagram. Such growth may be achieved when the YBCO/Ag phase constitutes the majority of the volume of the pellet before the growth temperature reaches that at the nucleation boundary. A large, single YBCO/Ag grain of diameter 30 mm has been fabricated successfully based on these studies by both cold-seeding and seeded infiltration growth techniques.

AB - A pseudo Time-Temperature-Transformation (TTT) diagram has been constructed for the optimum melt processing conditions for the fabrication of large, single grain Ag-doped Y-Ba-Cu-O (YBCO/Ag) bulk superconductors. The thermal conditions for the formation of homogeneous nuclei have been investigated and the boundary between this region and that for no grain nucleation has been mapped as a function of holding time. YBCO/Ag bulk samples grow typically in the form of single grains when the processing temperature profile lies within the 'no nucleation' region of the pseudo TTT diagram. However, by studying the YBCO/Ag growth process, some samples have been grown in the form of single grains by employing a temperature profile within the homogeneous grain nucleation region of the phase diagram. Such growth may be achieved when the YBCO/Ag phase constitutes the majority of the volume of the pellet before the growth temperature reaches that at the nucleation boundary. A large, single YBCO/Ag grain of diameter 30 mm has been fabricated successfully based on these studies by both cold-seeding and seeded infiltration growth techniques.

KW - Cold-seeding

KW - Melt-texture

KW - Single grain

KW - TTT diagram

KW - YBCO/Ag

UR - http://www.scopus.com/inward/record.url?scp=47649108257&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=47649108257&partnerID=8YFLogxK

U2 - 10.1016/j.mseb.2008.03.012

DO - 10.1016/j.mseb.2008.03.012

M3 - Article

AN - SCOPUS:47649108257

SN - 0921-5107

VL - 151

SP - 2

EP - 6

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

IS - 1

ER -

Optimum processing conditions for the fabrication of large, single grain Ag-doped YBCO bulk superconductors

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this