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Interfacial analysis of (La0.6Sr0.4)(Co0.2Fe0.8)O3− δ substrates wetted by Ag-CuO

  • Proceedings of the IV International Conference High Temperature Capillarity
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Abstract

The wetting of (La0.6Sr0.4)(Co0.2Fe0.8)O3−δ substrates by Ag-CuO was investigated using the standard sessile drop technique, followed by metallographic examination of the quenched specimens. The addition of CuO substantially improves the wetting of these substrates by silver. The largest improvements in contact angle are observed at low CuO-content, apparently through the formation of a homogeneous silver-copper oxide liquid at the area of sessile drop/substrate contact. At a critical composition of x CuO~ 8 mol% the mechanism of wetting changes, undergoing a transition initiated by the formation of two immiscible liquids within the molten sessile drop.

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Authors and Affiliations

  1. Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA, 99352, USA

    K. Scott Weil, Jin Yong Kim & John S. Hardy

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  1. K. Scott Weil
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  2. Jin Yong Kim
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  3. John S. Hardy
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Correspondence to K. Scott Weil.

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Weil, K.S., Kim, J.Y. & Hardy, J.S. Interfacial analysis of (La0.6Sr0.4)(Co0.2Fe0.8)O3− δ substrates wetted by Ag-CuO. J Mater Sci 40, 2341–2348 (2005). https://doi.org/10.1007/s10853-005-1956-1

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  • DOI: https://doi.org/10.1007/s10853-005-1956-1

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