Title

Electrochemical Investigation Into The Environmental Degradation Of Yba2Cu3O7 Superconductors

Abstract

YBa2Cu3O7(YBC) high‐Tc superconductors degrade rapidly when exposed to humidity or water. In an attempt to gain a better understanding of the degradation behavior and to study the effect of porosity on degradation susceptibility, small amplitude cyclic voltammetry (SACV) is performed. Microelectrodes are fabricated from YBC superconducting pellets of porosities approximately 50% and < 1%. SACV is performed in methyl alcohol saturated with sodium chloride and 1 M NaCl in distilled water before and after exposure to water. It is found that the corrosion rate of bulk superconductors increases with exposure time. The dense specimens seem to stabilize after 36 h while the porous specimens continue to deteriorate at first rapidly and after 24 h slowly. The BaCO3 film produced by corrosion is non‐protective. Copyright © 1994 WILEY‐VCH Verlag GmbH & Co. KGaA

Publication Date

1-1-1994

Publication Title

physica status solidi (a)

Volume

143

Issue

1

Number of Pages

109-116

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/pssa.2211430114

Socpus ID

0028428139 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028428139

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