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Dip-coating of aluminium by lead

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Abstract

A study of the problems connected with the coating of aluminium by molten lead has been made. A theoretical approach shows that lead only wets the aluminium surface if the latter is completely free of oxide. Contact of liquid lead with a “clean” aluminium surface may be effected by using an intermediate layer of molten chlorides as a flux and this process has been studied using electrochemical methods. It has been shown that the flux (formed by a eutectic mixture of KCl and ZnCl2) reacts with the aluminium to form a surface layer of various Al-Zn alloys as shown by electron probe microanalysis. After removal of all traces of chlorides, the resulting surface may be readily wetted by molten lead at the appropriate temperature.

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Authors and Affiliations

  1. Consiglío Nazionale delle Ricerche, Centro Studi di Chimica e Chimica Fisica Applicata alle caratteristiche di Impiego dei Materiali, Fiera del Mare, Piazzale Kennedy, Genova, Italy

    Alberto Passerone

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  1. Alberto Passerone
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Passerone, A. Dip-coating of aluminium by lead. J Mater Sci 9, 1050–1056 (1974). https://doi.org/10.1007/BF00552817

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  • DOI: https://doi.org/10.1007/BF00552817

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