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      Diffusion behaviour of Pt in platinum aluminide coatings during thermal cycles

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          Abstract

          Two-phase PtAl 2+β-(Ni,Pt)Al and single-phase β-(Ni,Pt)Al coatings were fabricated on DD5 Ni-based superalloy and pure Ni substrates. A coating/pure Ni substrate system was studied to determine the diffusion behaviour of Pt in the Ni–Al–Pt ternary system. The evolutions of morphology, phases and component concentration during thermal cycles were analysed. It was found that there is a phase shift from PtAl 2 to β* in the two-phase coating, and Kirkendall porosity was observed in the single-phase coating. Our results further indicated that there are two different diffusion paths of Pt in the Ni–Al–Pt system.

          Most cited references27

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          Surface rumpling of a (Ni, Pt)Al bond coat induced by cyclic oxidation

          D.R. Clarke, V.K Tolpygo (2000)
          Article 0 comments Cited 17 times – based on 0 reviews     Review now
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            Multifunctional coating interlayers for thermal-barrier systems

            T.M. Pollock, D.M Lipkin, K.J. Hemker (2012)
            The complex thermochemical and thermomechanical environments in high temperature propulsion and energy generation systems often demand the use of suites of materials with disparate properties. Unique combinations of materials that simultaneously function to optimize mechanical, thermal, and environmental properties can enable breakthroughs in design and system capability. This article focuses on interlayers that function as environmental barriers and promote adhesion of the ceramic thermal barriers to metallic substrates. The structure, composition, processing, and performance of major classes of bond coatings are briefly reviewed. Challenges for the development of new coating systems and for prediction of their performance in service are addressed.
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              An analytical model of rumpling in thermal barrier coatings

              D. Balint, J. Hutchinson (2005)
              Article 0 comments Cited 11 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): ijmr
                Title: International Journal of Materials Research
                Publisher: Carl Hanser Verlag
                ISSN (Print): 1862-5282
                ISSN (Electronic): 2195-8556
                Publication date (Print): 9 January 2018
                Volume: 109
                Issue: 1
                Pages: 3-9
                Affiliations
                a School of materials science and engineering, Shanghai University, Shanghai, China
                b AVIC commercial aircraft engine Co., Ltd., Shanghai, China
                Author notes
                [* ] Correspondence address, Dr./Prof. Yanfeng Gao, School of Materials Science and Engineering, Shanghai University, 99 Shangda road, Shanghai, 200444, P. R. China, Tel.: +086-021-66138005, E-mail: yfgao@ 123456shu.edu.cn
                Article
                Publisher ID: MK111572
                DOI: 10.3139/146.111572
                SO-VID: aea41c35-7409-4b24-aca0-d0ad2a1b6e85
                Copyright © © 2018, Carl Hanser Verlag, München
                History
                Date received : 3 March 2017
                Date accepted : 8 August 2017
                Date: 2 November 2017
                Page count
                References: 30, Pages: 7
                Categories
                Subject: Original Contributions

                ScienceOpen disciplines: Materials technology,Materials characterization,Materials science
                Keywords: Platinum aluminide,Bond coat,Diffusion
                Data availability:
                ScienceOpen disciplines: Materials technology, Materials characterization, Materials science
                Keywords: Platinum aluminide, Bond coat, Diffusion

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