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The Forming Conditions and Structure Characteristics of the Nickel-Molybdenum-Boron Chemico-Catalytic Coatings

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Abstract

The effect of the components of chemico-catalytic reduction solutions on the formation rate, composition, and structure characteristics of Ni-Mo-B-alloy coatings is studied. The chemical state of elements and the composition of the surface and bulk layers of the coating containing 11 to 22 wt % of molybdenum and 1.0 wt % of boron are studied using XPS combined with layer-by-layer profile analysis. The alloys have crystalline nanostructure stable at temperatures of up to 500°C. Molybdenum is incorporated into the coatings preferably in its completely reduced form, as a supersaturated solid solution in the nickel matrix. Yet at the same time, the deposits absorb a substantial amount of the absorbed intermediate products of the molybdate reduction to Mo(IV).

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Authors and Affiliations

  1. Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    A. B. Drovosekov, M. V. Ivanov, V. M. Krutskikh, E. N. Loubnin & Yu. M. Polukarov

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  1. A. B. Drovosekov
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  2. M. V. Ivanov
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  3. V. M. Krutskikh
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  4. E. N. Loubnin
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  5. Yu. M. Polukarov
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__________

Translated from Zashchita Metallov, Vol. 41, No. 5, 2005, pp. 451–457.

Original Russian Text Copyright © 2005 by Drovosekov, Ivanov, Krutskikh, Loubnin, Polukarov.

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Drovosekov, A.B., Ivanov, M.V., Krutskikh, V.M. et al. The Forming Conditions and Structure Characteristics of the Nickel-Molybdenum-Boron Chemico-Catalytic Coatings. Prot Met 41, 415–421 (2005). https://doi.org/10.1007/s11124-005-0059-3

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  • DOI: https://doi.org/10.1007/s11124-005-0059-3

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