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Title: Solderability Study of RABiTS-Based YBCO Coated Conductors

Abstract

The solderability of commercially available YBa{sub 2}Cu{sub 3}O{sub 7-x} (YBCO) coated conductors that were made from Rolling Assisted Biaxially Textured Substrates (RABiTS)-based templates was studied. The coated conductors, also known as second-generation (2G) high temperature superconductor (HTS) wires (in the geometry of flat tapes about 4 mm wide), were laminated with copper, brass, or stainless steel strips as stabilizers. To understand the factors that influence their solderability, surface profilometry and scanning electron microscopy were used to characterize the wire surfaces. The solderability of three solders, 52In48Sn, 67Bi33In, and 100In (wt.%), was evaluated using a standard test (IPC/ECA J-STD-002) and with two different commercial fluxes. It was found that the solderability varied with the solder and flux but the three different wires showed similar solderability for a fixed combination of solder and flux. Solder joints of the 2G wires were fabricated using the tools and the procedures recommended by the HTS wire manufacturer. The solder joints were made in a lap-joint geometry and with the superconducting sides of the two wires face-to-face. The electrical resistances of the solder joints were measured at 77 K, and the results were analyzed to qualify the soldering materials and evaluate the soldering process. It wasmore » concluded that although the selection of soldering materials affected the resistance of a solder joint, the resistivity of the stabilizer was the dominant factor.« less

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
OE USDOE - Office of Electric Transmission and Distribution
OSTI Identifier:
1018255
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physica C
Additional Journal Information:
Journal Volume: 471; Journal Issue: 15-16; Journal ID: ISSN 0921-4534
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BRASS; COPPER; ELECTRIC CONDUCTIVITY; GEOMETRY; ROLLING; SCANNING ELECTRON MICROSCOPY; SOLDERING; STAINLESS STEELS; SUBSTRATES; SUPERCONDUCTORS

Citation Formats

Zhang, Yifei, Duckworth, Robert C, Ha, Tam T, and Gouge, Michael J. Solderability Study of RABiTS-Based YBCO Coated Conductors. United States: N. p., 2011. Web. doi:10.1016/j.physc.2011.03.009.
Zhang, Yifei, Duckworth, Robert C, Ha, Tam T, & Gouge, Michael J. Solderability Study of RABiTS-Based YBCO Coated Conductors. United States. https://doi.org/10.1016/j.physc.2011.03.009
Zhang, Yifei, Duckworth, Robert C, Ha, Tam T, and Gouge, Michael J. 2011. "Solderability Study of RABiTS-Based YBCO Coated Conductors". United States. https://doi.org/10.1016/j.physc.2011.03.009.
@article{osti_1018255,
title = {Solderability Study of RABiTS-Based YBCO Coated Conductors},
author = {Zhang, Yifei and Duckworth, Robert C and Ha, Tam T and Gouge, Michael J},
abstractNote = {The solderability of commercially available YBa{sub 2}Cu{sub 3}O{sub 7-x} (YBCO) coated conductors that were made from Rolling Assisted Biaxially Textured Substrates (RABiTS)-based templates was studied. The coated conductors, also known as second-generation (2G) high temperature superconductor (HTS) wires (in the geometry of flat tapes about 4 mm wide), were laminated with copper, brass, or stainless steel strips as stabilizers. To understand the factors that influence their solderability, surface profilometry and scanning electron microscopy were used to characterize the wire surfaces. The solderability of three solders, 52In48Sn, 67Bi33In, and 100In (wt.%), was evaluated using a standard test (IPC/ECA J-STD-002) and with two different commercial fluxes. It was found that the solderability varied with the solder and flux but the three different wires showed similar solderability for a fixed combination of solder and flux. Solder joints of the 2G wires were fabricated using the tools and the procedures recommended by the HTS wire manufacturer. The solder joints were made in a lap-joint geometry and with the superconducting sides of the two wires face-to-face. The electrical resistances of the solder joints were measured at 77 K, and the results were analyzed to qualify the soldering materials and evaluate the soldering process. It was concluded that although the selection of soldering materials affected the resistance of a solder joint, the resistivity of the stabilizer was the dominant factor.},
doi = {10.1016/j.physc.2011.03.009},
url = {https://www.osti.gov/biblio/1018255}, journal = {Physica C},
issn = {0921-4534},
number = 15-16,
volume = 471,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2011},
month = {Sat Jan 01 00:00:00 EST 2011}
}