Influence of superconductor film composition on adhesion strength of coated conductors

Journal Article · Fri Nov 20 00:00:00 EST 2015 · Superconductor Science and Technology

DOI:https://doi.org/10.1088/0953-2048/29/1/015003· OSTI ID:1249544

Kesgin, Ibrahim; Khatri, Narayan; Liu, Yuhao; Delgado, Louis; Galstyan, Eduard; Selvamanickam, Venkat

The effect of high temperature superconductor (HTS) film composition on the adhesion strength of rare- earth barium copper oxide coated conductors (CCs) has been studied. It has been found that the mechanical integrity of the superconductor layer is very susceptible to the defects especially those along the ab plane, probably due to the weak interfaces between the defects and the matrix. Gd and Y in the standard composition were substituted with Sm and the number of in-plane defects was drastically reduced. Consequently, a four-fold increase in adhesion or peeling strength in Sm-based CCs was achieved compared to the standard GdYBCO samples.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; SuperPower Inc.
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1249544
• Journal Information: Superconductor Science and Technology, Vol. 29, Issue 1; ISSN 0953-2048
• Publisher: IOP Publishing
• Country of Publication: United States
• Language: English