Microstructure Analysis of Initial Alumina of Pt-Modified Aluminide Coatings on Ni-Based Alloy

doi:10.11900/0412.1961.2017.00093

Acta Metall Sin

2017, Vol. 53

Issue (11): 1504-1510 DOI: 10.11900/0412.1961.2017.00093

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Microstructure Analysis of Initial Alumina of Pt-Modified Aluminide Coatings on Ni-Based Alloy

Peng SONG(

), Rong CHEN, Jing FENG, Jianguo Lü, Jiansheng LU

Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China

Cite this article:

Peng SONG, Rong CHEN, Jing FENG, Jianguo Lü, Jiansheng LU. Microstructure Analysis of Initial Alumina of Pt-Modified Aluminide Coatings on Ni-Based Alloy. Acta Metall Sin, 2017, 53(11): 1504-1510.

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Abstract

NiPtAl coatings are widely used as overlaying coatings besides bondcoats for thermal barrier coating (TBC) systems within high temperature environment. Oxidaiton behavior of NiPtAl coatings is mainly contribution for the failure of TBC systems or overlaying coatings. An initial oxide layer growth characteristics play a key role in extending lifetime of TBC system or overlaying coatings. In this work, the oxidation experiments of the Pt modified aluminide coating on CMSX-4 Ni-based alloy were carried out at 1150 ℃ for 1 h in 80%Ar+20%O₂. The microstructures of oxide on the NiPtAl coatings are studied by OM, SEM, TEM and Raman spectroscopy. The results indicated that the oxide layer on the NiPtAl coatings included stable and met-stable Al₂O₃ after 1 h oxidation, and part of spalled oxide layer as well as pores within the oxide layer. The 0.5 μm thickness whisker-like θ-Al₂O₃ could form on NiPtAl coating during the initially oxidation stage. At the initial oxidation stage θ-Al₂O₃ fastly grew which resulted β-NiAl to γ'-Ni₃Al transformation. The Pt particles formed on the inter-surface between α-Al₂O₃ and θ-Al₂O₃ layer due to a less Pt solid solubility in γ'-Ni₃Al compared to β-NiAl in the coating. Fast growth of initial Al₂O₃ could induce pores formation within the alumina layer. The pores and stress due to oxidation and phase transformation could decrease the alumina adherence, and at last result in the oxide spallation.

Key words: NiPtAl high temperature coating initially oxidation Al₂O₃ growth characteristics

Received: 21 March 2017

ZTFLH:

TG172.82

Fund: Supported by National Natural Science Foundation of China (No.51401097)

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	Peng SONG
	Rong CHEN
	Jing FENG
	Jianguo Lü
	Jiansheng LU

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https://www.ams.org.cn/EN/10.11900/0412.1961.2017.00093 OR https://www.ams.org.cn/EN/Y2017/V53/I11/1504

Fig.1 Cross-sectional SEM image (a) and the coating surface XRD analysis (b) of as-received NiPtAl coating

Fig.2 OM image (a), SEM image (b) of NiPtAl coating surface after 1 h isothermal oxidation at 1150 ℃ in 80%Ar+20%O₂, and Raman spectra for regions I, II and III in Fig.2a (c)(Arrows in Figs.2a and b show the grain boundary of the NiPtAl coating)

Fig.3 Cross-sectional TEM images of Al₂O₃ on the NiPtAl coating surface for regions I (a), II (b) and III (c) in Fig.2a after 1 h isothermal oxidation at 1150 ℃ in 80% Ar+20%O₂

Fig.4 SAED patterns of oxide films from the inner (a) and outer (b) layers showed by circles in Fig.3b

Fig.5 TEM image for the local part within Al₂O₃ layer showed by rectangle in Fig.3b (a) and HRTEM image for the local part within Al₂O₃ layer showed by rectangle in Fig.3c (b)

Fig.6 Cross-sectional SEM images of Al₂O₃ on NiPtAl coating after 1 h isothermal oxidation at 1150 ℃
(a) α-Al₂O₃ area
(b) α-Al₂O₃+θ-Al₂O₃ area
(c) θ-Al₂O₃ area

[1]	Goward G W. Progress in coatings for gas turbine airfoils [J]. Surf. Coat. Technol., 1998, 108-109: 73
[2]	Padture N P, Gell M, Jordan E H.Thermal barrier coatings for gas-turbine engine applications[J]. Science, 2002, 296: 280
[3]	Vassen R, Stuke A, St?ver D.Recent developments in the field of thermal barrier coatings[J]. J. Thermal Spray Technol., 2009, 18: 181
[4]	Schulz U, Leyens C, Fritscher K, et al.Some recent trends in research and technology of advanced thermal barrier coatings[J]. Aerosp. Sci. Technol., 2003, 7: 73
[5]	Gleeson B, Mu N, Hayashi S.Compositional factors affecting the establishment and maintenance of Al2O3 scales on Ni-Al-Pt systems[J]. J. Mater. Sci., 2009, 44: 1704
[6]	Tawancy H M, UI-Hamid A, Abbas N M, et al.Effect of platinum on the oxide-to-metal adhesion in thermal barrier coating systems[J]. J. Mater. Sci., 2008, 43: 2978
[7]	Vialas N, Monceau D.Effect of Pt and Al content on the long-term, high temperature oxidation behavior and interdiffusion of a Pt-modified aluminide coating deposited on Ni-base superalloys[J]. Surf. Coat. Technol., 2006, 201: 3846
[8]	Haynes J A, Pint B A, More K L, et al.Influence of sulfur, platinum, and hafnium on the oxidation behavior of CVD NiAl bond coatings[J]. Oxid. Met., 2002, 58: 513
[9]	Hou P Y, Tolpygo V K.Examination of the platinum effect on the oxidation behavior of nickel-aluminide coatings[J]. Surf. Coat. Technol., 2007, 202: 623
[10]	Svensson H, Christensen M, Knutsson P, et al.Influence of Pt on the metal-oxide interface during high temperature oxidation of NiAl bulk materials[J]. Corros. Sci., 2009, 51: 539
[11]	Qin F, Anderegg J W, Jenks C J, et al.The effect of Pt on Ni3Al surface oxidation at low-pressures[J]. Surf. Sci., 2007, 601: 146
[12]	Chieux M C, Molins R, Rémy L, et al. Effect of material and environmental parameters on the microstructure evolution and oxidation behavior of a Ni-based superalloy coated with a Pt-modified Ni-aluminide [J]. Mater. Sci. Forum, 2008, 595-598: 33
[13]	Tawancy H M, Abbas N M, Rhys-Jones T N. Role of platinum in aluminide coatings[J]. Surf. Coat. Technol., 1991, 49: 1
[14]	Tolpygo V K, Clarke D R.Microstructural study of the theta-alpha transformation in alumina scales formed on nickel-aluminides[J]. Mater. High Temp., 2000, 17: 59
[15]	Song P, Lu J S, Lü J G, et al.Influence factors of high temperature oxidation for Pt-modified-aluminide bond coatings[J]. Rare Met. Mater. Eng., 2010, 39: 304(宋鹏, 陆建生, 吕建国等. 铂铝涂层高温氧化的影响因素研究[J]. 稀有金属材料与工程, 2010, 39: 304)
[16]	Song P, Lu J S, Zhang D F.High temperature oxidation of surface polished treatment Pt-modified-aluminide bond coats[J]. Chin. J. Nonferrous Met., 2009, 19: 1417(宋鹏, 陆建生, 张德丰. 抛光处理铂铝粘结层的高温氧化[J]. 中国有色金属学报, 2009, 19: 1417)
[17]	Xing L L, Zheng Y J, Cui L S, et al.Progress of water vapour effect on growth of alumina forming alloys[J]. J. Chin. Soc. Corros. Prot., 2011, 31: 409(邢琳琳, 郑雁军, 崔立山等. 水蒸汽影响氧化铝膜生长的研究新进展[J]. 中国腐蚀与防护学报, 2011, 31: 409)
[18]	Hayashi S, Narita T, Gleeson B. Early-stage oxidation behavior of γ′-Ni3Al-based alloys with and without Pt addition [J]. Mater. Sci. Forum, 2006, 522-523: 229
[19]	Hayashi S, Gleeson B.Early-stage oxidation behavior of Pt-modified γ′-Ni3Al-based alloys with and without Hf addition[J]. Oxid. Met., 2009, 71: 5
[20]	Pint B A, Haynes J A, Zhang Y, et al.The effect of water vapor on the oxidation behavior of Ni-Pt-Al coatings and alloys[J]. Surf. Coat. Technol., 2006, 201: 3852
[21]	Li M S, Zhou Y C.Transient oxidation of Al2O3 forming alloys[J]. Corros. Sci. Prot. Technol., 2005, 17: 409(李美栓, 周延春. Al2O3形成合金过渡态氧化行为[J]. 腐蚀科学与防护技术, 2005, 17: 409)
[22]	Grabke H J.Oxidation of NiAl and FeAl[J]. Intermetallics, 1999, 7: 1153
[23]	Svensson H, Stiller K, Angenete J. Investigation of oxide formation during short-term oxidation of model NiAl alloys [J]. Mater. Sci. Forum, 2004, 461-464: 231
[24]	Svensson H, Knutsson P, Stiller K.Formation and healing of voids at the metal-oxide interface in NiAl alloys[J]. Oxid. Met., 2009, 71: 143
[25]	Hou P Y, Izumi T, Gleeson B.Sulfur segregation at Al2O3/γ-Νi + γ'-Ni3Al interfaces: Effects of Pt, Cr and Hf additions[J]. Oxid. Met., 2009, 72: 109
[26]	Hayashi S, Ford S I, Young D J, et al.α-NiPt(Al) and phase equilibria in the Ni-Al-Pt system at 1150 ℃[J]. Acta Mater., 2005, 53: 3319

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