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Incorporation and evolution of ZrO2 nano-particles in Pt-modified aluminide coating for high temperature applications

Qian, Lingyi; Xu, Fang; Voisey, K.T.; Nekouie, Vahid; Zhou, Zhaoxia; Silberschmidt, Vadim V.; Hou, Xianghui

Authors

Lingyi Qian

Fang Xu

K.T. Voisey katy.voisey@nottingham.ac.uk

Vahid Nekouie

Zhaoxia Zhou

Vadim V. Silberschmidt

Xianghui Hou xianghui.hou@nottingham.ac.uk



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.

Journal Article Type Article
Publication Date Feb 15, 2017
Journal Surface and Coatings Technology
Print ISSN 0257-8972
Electronic ISSN 1879-3347
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 311
APA6 Citation Qian, L., Xu, F., Voisey, K., Nekouie, V., Zhou, Z., Silberschmidt, V. V., & Hou, X. (2017). Incorporation and evolution of ZrO2 nano-particles in Pt-modified aluminide coating for high temperature applications. Surface and Coatings Technology, 311, doi:10.1016/j.surfcoat.2016.12.106
DOI https://doi.org/10.1016/j.surfcoat.2016.12.106
Keywords Bond coat; Thermally grown oxide; PtAl; Reactive Element Effect; Co-electrodeposition
Publisher URL http://www.sciencedirect.com/science/article/pii/S0257897216313950
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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