High-temperature oxidation kinetics of NiAl single crystal and oxide spallation as a function of crystallographic orientation - Archive ouverte HAL Access content directly
Journal Articles Materials Science and Engineering: A Year : 2004

High-temperature oxidation kinetics of NiAl single crystal and oxide spallation as a function of crystallographic orientation

Abstract

Isothermal and cyclic high-temperature oxidation of NiAl single crystal samples are presented. Oxidations have been carried out at 900, 1050, 1100 and 1150 ◦C on (1 0 0) and (1 1 0) oriented surface. Continuous thermogravimetry in cyclic conditions allows isothermal oxidation kinetics and spalling at each cycle to be followed. Oxidation kinetics are compared between (1 0 0) surface and (1 1 0) surface. (1 0 0) oriented surfaces appeared to oxidize slightly faster than (1 1 0) oriented surfaces. Experimental results of cyclic oxidation are compared to simulated results using a previously published statistical model. Spalling increases when the average oxide scale thickness increases with the number of cycles. Longer tests are necessary to study this evolution during the ’steady-state’ but no critical oxide thickness was found.
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Dates and versions

hal-03602369 , version 1 (09-03-2022)

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Dominique Poquillon, Djar Oquab, Bernard Viguier, François Senocq, Daniel Monceau. High-temperature oxidation kinetics of NiAl single crystal and oxide spallation as a function of crystallographic orientation. Materials Science and Engineering: A, 2004, 381 (1 - 2), pp.0. ⟨10.1016/j.msea.2004.04.009⟩. ⟨hal-03602369⟩
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