Full Text:   <3161>

CLC number: O34

On-line Access: 2010-10-05

Received: 2010-04-16

Revision Accepted: 2010-07-05

Crosschecked: 2010-09-06

Cited: 3

Clicked: 6040

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.10 P.794-803


Experimental study on the interfacial delamination in a thermal barrier coating system at elevated temperatures

Author(s):  Peng-fei Zhao, Fu-lin Shang

Affiliation(s):  Department of Engineering Mechanics, School of Aerospace, Xian Jiaotong University, Xian 710049, China

Corresponding email(s):   zhaopengfei@stu.xjtu.edu.cn, shangfl@mail.xjtu.edu.cn

Key Words:  Thermal barrier coating (TBC), Three-point bending test, Finite element analysis, Delamination toughness

Peng-fei Zhao, Fu-lin Shang. Experimental study on the interfacial delamination in a thermal barrier coating system at elevated temperatures[J]. Journal of Zhejiang University Science A, 2010, 11(10): 794-803.

@article{title="Experimental study on the interfacial delamination in a thermal barrier coating system at elevated temperatures",
author="Peng-fei Zhao, Fu-lin Shang",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Experimental study on the interfacial delamination in a thermal barrier coating system at elevated temperatures
%A Peng-fei Zhao
%A Fu-lin Shang
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 10
%P 794-803
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000173

T1 - Experimental study on the interfacial delamination in a thermal barrier coating system at elevated temperatures
A1 - Peng-fei Zhao
A1 - Fu-lin Shang
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 10
SP - 794
EP - 803
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000173

The failure mode and adhesion of thermal barrier coating (TBC) 8YSZ (ZrO2+8% (w/w) Y2O3) deposited on NiCoCrAlTaY bond coat by atmospheric plasma spraying were investigated. A grooved modified three-point bending specimen that can generate a single interface crack to facilitate the control of crack growth was adopted for testing, which was conducted at the ambient temperature of 100 °C. The morphology and composition of fractured surfaces were examined by means of a scanning electron microscopy (SEM) and an energy disperse spectroscopy (EDS). Images and spectrum show that cracks are initiated and propagated exclusively within YSZ layer adjacent to top/bond coat interface. The load-displacement curves obtained exhibit similar shapes that indicate two distinct stages in crack initiation and stable crack growth. Finite element analyses were performed to extract the adhesion strength of the TBCs. The delamination toughness of the plasma-sprayed 8YSZ coatings at 100 °C, in terms of critical strain energy release rate Gc, can be reliably obtained from an analytical solution.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1]Brindley, W.J., 1996. Thermal barrier coatings. Journal of Thermal Spray Technology, 5(4):379-380.

[2]Charalambides, P.G., Lund, J., Evans, A.G., 1989. A test specimen for determining the fracture resistance of bimaterial interfaces. Journal of Applied Mechanics, 56:77-82.

[3]Choi, S.R., Zhu, D., Miller, R.A., 2004. Mechanical properties/ database of plasma-sprayed ZrO2-8% (w/w) Y2O3 thermal barrier coatings. International Journal of Applied Ceramic Technology, 1(4):330-342.

[4]Dal Maschio, R., Sgiavo, V.M., Mattivi, L., Bertamini, L., Sturlese, S., 1994. Indentation method for fracture resistance determination of metal/ceramic interfaces in thick TBCs. Journal of Thermal Spray Technology, 3(1):51-56.

[5]Evans, A.G., Mumm, D.R., Hutchinson, J.W., Meier, G.H., Pettit, F.S., 2001. Mechanisms controlling the durability of thermal barrier coatings. Progress in Materials Science, 46(5):505-553. [doi:10.1016/S0079-6425(00)00020-7]

[6]Hirakata, H., Kitazawa, M., Kitamura, T., 2006. Fatigue crack growth along interface between metal and ceramics submicron-thick films in inert environment. Acta Materialia, 54(1):89-97.

[7]Li, C.J., Wang, W.Z., He, Y., 2003. Measurement of fracture toughness of plasma-sprayed Al2O3 coatings using a tapered double cantilever beam method. Journal of the American Ceramic Society, 86(8):1437-1439.

[8]McPherson, R., Shafer, B.V., 1982. Interlamellar contact within plasma-sprayed coatings. Thin Solid Films, 97(3):201-204.

[9]Miller, R.A., 1987. Current status of thermal barrier coatings—an overview. Surface and Coatings Technology, 30(1):1-11.

[10]Miller, R.A., 1997. Thermal barrier coatings for aircraft engines: history and directions. Journal of Thermal Spray Technology, 6(1):35-42.

[11]Ohmori, A., Li, C.J., 1991. Quantitative characterization of the structure of plasma-sprayed Al2O3 coating by using copper electroplating. Thin Solid Films, 201(2):241-252.

[12]Pawlowski, L., 1995. The Science and Engineering of Thermal Spray Coatings. Chichester, Wiley Press, New York, USA.

[13]Qian, L., Zhu, S., Kagawa, Y., Kubo, T., 2003. Tensile damage evolution behavior in plasma-sprayed thermal barrier coating system. Surface and Coatings Technology, 173(2-3):178-184.

[14]Rabiei, A., Evans, A.G., 2000. Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings. Acta Materialia, 48(15):3963-3976.

[15]Yamazaki, Y., Schimdt, A., Scholz, A., 2006. The determination of the delamination resistance in thermal barrier coating system by four-point bending tests. Surface and Coatings Technology, 201(3-4):744-754.

[16]Zaidi, H., Djamai, A., Chin, K.J., Mathia, T., 2006. Characterisation of DLC coating adherence by scratch testing. Tribology International, 39(2):124-128.

[17]Zhao, P.F., Sun, C.A., Zhu, X.Y., Shang, F.L., Li, C.J., 2010. Fracture toughness measurements of plasma-sprayed thermal barrier coatings using a modified four-point bending method. Surface and Coatings Technology, 204(24):4066-4074.

[18]Zhou, Y.C., Hashida, T., Jian, Y.C., 2002. Determination of interface fracture toughness in thermal barrier coating system by blister test. Journal of Engineering Materials and Technology, 125(2):176-182.

Open peer comments: Debate/Discuss/Question/Opinion


Please provide your name, email address and a comment

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2024 Journal of Zhejiang University-SCIENCE