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Title: Incorporation and evolution of ZrO2 nano-particles in Pt-modified aluminide coating for high temperature applications
Authors: Qian, Lingyi
Xu, Fang
Voisey, K.T.
Nekouie, Vahid
Zhou, Zhaoxia
Silberschmidt, Vadim V.
Hou, Xianghui
Keywords: Bond coat
Thermally grown oxide
Reactive Element Effect
Issue Date: 2016
Publisher: © Elsevier
Citation: QIAN, L. ... et al, 2016. Incorporation and evolution of ZrO2 nano-particles in Pt-modified aluminide coating for high temperature applications. Surface and Coatings Technology, 311, pp. 238-247.
Abstract: ZrO2 nano-particles were incorporated into electro-deposited PtAl coatings in an attempt to enhance their performance by exploiting the effect of reactive element oxides. PtAl coatings with and without ZrO2 particles were deposited onto three commercially available Ni-based superalloys: Mar-M247, Mar-M246 and Inconel 718. After aluminising and annealing, thermal cycling oxidation tests were carried out to evaluate the influence of ZrO2 addition and substrate composition. Cross-sectional SEM images were obtained to characterise the coatings after deposition, after heat treatment and after 200 thermal cycles. The addition of ZrO2 particles to PtAl coatings on Mar-M-246 and Inconel 718 appeared to increase the growth of thermally grown oxide and reduce its rumpling. However, such effects were not observed for the addition of ZrO2 particles to the PtAl coatings on Mar-M247. The analysis of the coatings on different substrates revealed and elucidated the interactions between Hf, Al and ZrO2, providing better understanding of reactions of ZrO2 and the influence of the substrate on bond coat behaviour.
Description: This paper was accepted for publication in the journal Surface and Coatings Technology and the definitive published version is available at http://dx.doi.org/10.1016/j.surfcoat.2016.12.106
Sponsor: This work was supported by a joint PhD studentship (RGS 114675) between The University of Nottingham and AVIC Commercial Aircraft Engine Co., Ltd.
Version: Accepted
DOI: 10.1016/j.surfcoat.2016.12.106
URI: https://dspace.lboro.ac.uk/2134/24084
Publisher Link: http://dx.doi.org/10.1016/j.surfcoat.2016.12.106
ISSN: 0257-8972
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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