Initial stages of oxidation of Ni-based single-crystal superalloys during heating in relation with their isothermal oxidation kinetics

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Год издания: 2014

Ключевые слова: Initial stages, Ni-based superalloy, Oxidation, Oxide scale morphology, Thermogravimetry, Accurate measurement, Chemical and phase compositions, Initial oxidation, Isothermal oxidations, Ni-based single crystal superalloy, Ni-based single-crystal superalloys, Ni-based superalloys, Oxide scale, Chemical analysis, Exhibitions, Isotherms, Morphology, Nickel, Scale (deposits), Superalloys, Thermogravimetric analysis, Oxidation

Аннотация: The initial oxidation behavior of Ni-based single crystal superalloys at high temperature (1100°C) was investigated. The heating-cooling oxidation curves of superalloys of different generations were analyzed using high precision thermogravimetry which is suitable for the accurate measurement of small mass changes occurring during short oxidation tests. The morphology of the oxide scales formed during the initial stages of oxidation, their chemical and phase compositions were analyzed. It was found that alloys forming an initial fast growing NiO or (Ni,Co)O scale during heating did show the lowest isothermal oxidation kinetics. Copyright © 2013 MS&T'13®.

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Издание

Журнал: Materials Science and Technology Conference and Exhibition 2013, MS and T 2013

Выпуск журнала: Vol. 4

Номера страниц: 2472-2478

Авторы

  • Fedorova E. (Institut Carnot CIRIMAT, ENSIACET, all?e Emile Monso, 31030 Toulouse Cedex-4, France, Polytechnic Institute, Siberian Federal University, 660041 Krasnoyarsk, Russian Federation)
  • Monceau D. (Institut Carnot CIRIMAT, ENSIACET, all?e Emile Monso, 31030 Toulouse Cedex-4, France)
  • Oquab D. (Institut Carnot CIRIMAT, ENSIACET, all?e Emile Monso, 31030 Toulouse Cedex-4, France)

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