Alumina Growth and Interface Strengthening Mechanisms of Pt on the Surface of Bond Coats in EB-PVD TBC System Based on First-Principles

Yi Qun Wang; Peng Song; Hong Xing Liao; Qiang Ji; Jian Sheng Lu

doi:10.4028/www.scientific.net/MSF.850.253

Paper Titles

Ultrafast Electron Cascades in X-Rays Detector
p.226

Welding Thermal Crack Sensitivity Simulation of 9%Ni Steel
p.230

A Non-Contact Test Method on Local Mechanical Properties of Weld Joint
p.235

Orientation Effects of CH₃NH₃⁺ on CH₃NH₃PbI₃ Stability and Photoelectric Properties
p.245

Alumina Growth and Interface Strengthening Mechanisms of Pt on the Surface of Bond Coats in EB-PVD TBC System Based on First-Principles
p.253

Surface Stability of NiTi Alloy: A Density-Functional Theory Study
p.259

Diffusion Behavior of Carbon Atoms in Austenite Region of SCM435 Steel
p.266

Investigation on Structures of Aluminum Melts Containing Small Amount of Silicon Element
p.271

Effect of Deformation Homogeneity on Grain Refinement of AZ31 Magnesium Alloys Based on FEA during ECAP
p.281

HomeMaterials Science ForumMaterials Science Forum Vol. 850Alumina Growth and Interface Strengthening...

Alumina Growth and Interface Strengthening Mechanisms of Pt on the Surface of Bond Coats in EB-PVD TBC System Based on First-Principles

Abstract:

Oxygen adsorption, aluminium segregation and interface adhesion on the surface of NiPtAl and MCrAlY bond coats (BC) in EB-PVD TBC system were investigated using first-principles calculations within the density functional theory (DFT). Examination of oxygen adsorption and aluminium segregation indicated that the addition of Pt always obstructed the growth of alumina. In addition, NiPtAl, as bond coats in EB-PVD TBC System, had less lattice variation and stronger interface adhesion than MCrAlY when alumina was produced. It is found that Pt is an important factor that affects the Al₂O₃ growth in thermal barrier coating. It is proved that Pt improves the bonding performance of Al₂O₃ and lifetime of thermal barrier coating. This offsets the high cost of Pt in industry application.

You might also be interested in these eBooks

Methods of Design and Characterization of Materials, Research and Development of Technological Processes

View Preview

Info:

Periodical:

Materials Science Forum (Volume 850)

Pages:

253-258

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.253

Citation:

Cite this paper

Online since:

March 2016

Authors:

Yi Qun Wang*, Peng Song, Hong Xing Liao, Qiang Ji, Jian Sheng Lu

Keywords:

Aluminium Segregation, Interface Adhesion, Oxygen Adsorption, Pt, TBC

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] J.L. Smialek, Compiled furnace cyclic lives of EB-PVD thermal barrier coatings, Surface and Coatings Technology, J. 276 (2015) 31-38.

DOI: 10.1016/j.surfcoat.2015.06.018

Google Scholar

[2] W.Y. Lee, Y. Zhang, I.G. Wright, B.A. Pint, P.K. Liaw, Effects of sulfur impurity on the scale adhesion behavior of a desulfurized Ni-based superalloy aluminized by chemical vapor deposition, Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, J. 29 (1998).

DOI: 10.1007/s11661-998-0274-z

Google Scholar

[3] J.A. Haynes, M.J. Lance, B.A. Pint, I.G. Wright, Characterization of commercial EB-PVD TBC systems with CVD (Ni, Pt)Al bond coatings, Surface and Coatings Technology, J. 146–147 (2001) 140-146.

DOI: 10.1016/s0257-8972(01)01483-9

Google Scholar

[4] P. Song, J.S. Lu, T.H. Huang, D.F. Zhang, J.G. Lv, Different Growth Mechanisms of Alumina on the Surface of NiPtAl and MCrAlY Bondcoatings in EB-PVD TBC System, Rare Metal Materials and Engineering, J. (2014) 601-604.

Google Scholar

[5] M.D. Segall, P. Lindan, M.J. Probert, C.J. Pickard, P.J. Hasnip, S.J. Clark, M.C. Payne, First-principles simulation: ideas, illustrations and the CASTEP code, Journal of Physics-condensed Matter, J. 14 (2002) 2717-2744.

DOI: 10.1088/0953-8984/14/11/301

Google Scholar

[6] S.S. David, A.S. Janice, Density Functional Theory, John Wiley & Sons, New Jersey, (2009).

Google Scholar

[7] Y. Jiang, J.R. Smith, A.G. Evans, Activity coefficients for dilute solid solutions of Al in Ni, Scripta Materialia, J. 55 (2006) 1147-1150.

DOI: 10.1016/j.scriptamat.2006.08.037

Google Scholar

[8] W. Zeng, T. Liu, T. Li, B. Xie, First principles study of oxygen adsorption on the anatase TiO2 (101) surface, Physica E: Low-dimensional Systems and Nanostructures, J. 67 (2015) 59-64.

DOI: 10.1016/j.physe.2014.10.041

Google Scholar

[9] T. Ossowski, A. Kiejna, Oxygen adsorption on Fe(110) surface revisited, Surface Science, J. 637–638 (2015) 35-41.

DOI: 10.1016/j.susc.2015.03.001

Google Scholar

[10] C.R. Werrett, A.K. Bhattacharya, D.R. Pyke, The validity of Cls charge referencing in the XPS of oxidised AlSi alloys, Applied Surface Science, J. 103 (1996) 403-407.

DOI: 10.1016/s0169-4332(96)00539-9

Google Scholar

[11] A.G. Evans, D.R. Clarke, C.G. Levi, The influence of oxides on the performance of advanced gas turbines, Journal of the European Ceramic Society, J. 28 (2008) 1405-1419.

DOI: 10.1016/j.jeurceramsoc.2007.12.023

Google Scholar

[12] K. Luo, B. Zang, S. Fu, Y. Jiang, D. Yi, Stress/strain aging mechanisms in Al alloys from first principles, Transactions of Nonferrous Metals Society of China, J. 24 (2014) 2130-2137.

DOI: 10.1016/s1003-6326(14)63323-9

Google Scholar

[13] Z. Wang, P. Li, Dynamic failure and fracture mechanism in alumina ceramics: Experimental observations and finite element modelling, Ceramics International, J. 41(2015) 127763-12772.

DOI: 10.1016/j.ceramint.2015.06.110

Google Scholar

[14] E.A.A. Jarvis, A. Christensen, E.A. Carter, Weak bonding of alumina coatings on Ni(111), Surface Science, J. 487 (2001) 55-76.

DOI: 10.1016/s0039-6028(01)01071-8

Google Scholar