OXIDATION RESISTANCE AND MICROSTRUCTURE OF Pt AND PtIr DIFFUSION COATINGS ON Ni BASED SINGLE CRYSTAL SUPERALLOYS BY ELECTROPLATING METHOD

Tue Chi Dao, Hideyuki Murakami, Le Thi Hong Lien

Abstract


In this study, Pt and PtIr diffusion coatings on Ni based single crystal superalloys were fabricated by an electroplating method followed by an annealing heat treatment process. The microstructure and phase constitution of the coatings were studied by SEM/EDS and XRD methods. The cyclic oxidation test at 1150oC was conducted to investigate the oxidation resistance of the coatings. The results showed that the addition of Ir in the coating led to the formation of α(NiPt2Al) phase and reduced the formation Kirkendall voids in the coating after 100 cycle oxidation test.

Keywords


Platinum-Iridium, diffusion coating, electroplating, microstructure change, gas turbine

Full Text:

PDF

References


Darolia, R., Thermal barrier coatings technology: Critical review, progress update, remaining challenges and prospects. International Materials Reviews. 58(6), (2013): p. 315-348.

Rajendran, R., Gas turbine coatings – An overview. Engineering Failure Analysis. 26(0), (2012): p. 355-369.

Tolpygo, V.K. and D.R. Clarke, Surface rumpling of a (Ni, Pt)Al bond coat induced by cyclic oxidation. Acta Materialia. 48(13), (2000): p. 3283-3293.

Zhang, Y., et al., Interdiffusion behavior of Pt-diffused γ + γ′ coatings on Ni-based superalloys. Surface and Coatings Technology. 203(5–7), (2008): p. 417-421.

Selezneff, S., et al., Thermal cycling behavior of EBPVD TBC systems deposited on doped Pt-rich γ–γ′ bond coatings made by Spark Plasma Sintering (SPS). Surface and Coatings Technology. 206(7), (2011): p. 1558-1565.

Izumi, T., et al., Effects of targeted γ-Ni + γ′-Ni3Al-based coating compositions on oxidation behavior. Surface and Coatings Technology. 202(4–7), (2007): p. 628-631.

Wu, R.T., X. Wang, and A. Atkinson, On the interfacial degradation mechanisms of thermal barrier coating systems: Effects of bond coat composition. Acta Materialia. 58(17), (2010): p. 5578-5585.

He, D., et al., Manufacturing, structure and high temperature corrosion of palladium-modified aluminide coatings on nickel-base superalloy M38. Thin Solid Films. 376(1–2), (2000): p. 144-151.

Murakami, H., T. Yano, and S. Sodeoka, Process Dependence of Ir-Based Bond Coatings. MATERIALS TRANSACTIONS. 45(9), (2004): p. 2886-2890.

Yamabe-Mitarai, Y. and H. Aoki, Solid-solution hardening of Ir by Pt and Ni. Materials Letters. 56(5), (2002): p. 781-786.

Wu, F., H. Murakami, and A. Suzuki, Development of an iridium–tantalum modified aluminide coating as a diffusion barrier on nickel-base single crystal superalloy TMS-75. Surface and Coatings Technology. 168(1), (2003): p. 62-69.

Wu, Y.N., et al., Hot corrosion behavior of Pt-Ir modified aluminide coatings on the nickel-base single crystal superalloy TMS-82+. Journal of Materials Research. 22(1), (2007): p. 206-216.

Suzuki, A., et al., Oxidation behavior of Pt-Ir modified aluminized coatings on Ni-base single crystal superalloy TMS-82+. Oxidation of Metals. 68(1-2), (2007): p. 53-64.

Hayashi, S., et al., α-NiPt(Al) and phase equilibria in the Ni–Al–Pt system at 1150 °C. Acta Materialia. 53(11), (2005): p. 3319-3328.

Stacy, J.P., et al., Synthesis and oxidation performance of Al-enriched γ + γ′ coatings on Ni-based superalloys via secondary aluminizing. Surface and Coatings Technology. 202(4–7), (2007): p. 632-636.

Terock, M., et al., Synthesis and characterization of a Pt–Al–Cr–Ni γ/γ′-coating on the Ni-based superalloy CMSX‐4. Surface and Coatings Technology. 236, (2013): p. 347-352.

Audigié, P., et al., Observation and modeling of α-NiPtAl and Kirkendall void formations during interdiffusion of a Pt coating with a γ-(Ni-13Al) alloy at high temperature. Surface and Coatings Technology. 260, (2014): p. 9-16.




DOI: https://doi.org/10.15625/2525-2518/57/6/13794 Display counter: Abstract : 17 views. PDF : 5 views.

Refbacks

  • There are currently no refbacks.


Index: Google Scholar; Crossref; VCGate; Asean Citation Index

Published by Vietnam Academy of Science and Technology