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Oxidation of Metals

, Volume 34, Issue 3–4, pp 335–349 | Cite as

Novel instabilities in the oxidation of a Nimonic alloy when YBaCuO is deposited upon it

  • S. B. Newcomb
  • B. Soylu
  • W. M. Stobbs
Article

Abstract

When an YBaCuO film is deposited onto a Nimonic 80A alloy substrate using a plasma technique there is extensive inter-reaction. The microstructural and compositional relationships between the layered products in this interfacial scaling process are described using data obtained by conventional edge-on TEM techniques. Our results demonstrate the way in which the segregation of chromium to the YBaCuO overlayer dominates the scaling behaviour that is seen, despite the formation of intermediate layers which would normally have been expected to act as diffusion barriers, and highlight the potential difficulties in making well behaved electrical contacts for this superconductor.

Key words

Nimonic 80A alloy YBaCuO scale behavior superconductor 

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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • S. B. Newcomb
    • 1
  • B. Soylu
    • 1
    • 2
  • W. M. Stobbs
    • 1
    • 2
  1. 1.Department of Materials Science and MetallurgyUniversity of CambridgeCambridgeUK
  2. 2.The I.R.C. in SuperconductivityUniversity of CambridgeCambridgeUK

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