INFLUENCE OF VERTICAL CRACKS ON FAILURE MECHANISM OF EB-PVD THERMAL BARRIER COATINGS DURING THERMAL CYCLING

Acta Metall Sin

2005, Vol. 41

Issue (9): 979-984 DOI:

Research Articles

Current Issue | Archive | Adv Search

INFLUENCE OF VERTICAL CRACKS ON FAILURE MECHANISM OF EB-PVD THERMAL BARRIER COATINGS DURING THERMAL CYCLING

CHEN Liqiang; GONG Shengkai; XU Huibin

School of Materials Science and Engineering; Beijing University of Aeronautics and Astronautics; Beijing 100083

Cite this article:

CHEN Liqiang; GONG Shengkai; XU Huibin. INFLUENCE OF VERTICAL CRACKS ON FAILURE MECHANISM OF EB-PVD THERMAL BARRIER COATINGS DURING THERMAL CYCLING. Acta Metall Sin, 2005, 41(9): 979-984 .

Download:

PDF(412KB)
Export: BibTeX | EndNote (RIS)

Abstract The influence of surface vertical cracks in YSZ coating on the failure mechanism of thermal barrier coatings prepared by electron beam physical vapor deposition (EB-PVD) during thermal cycling was studied. The vertical cracks occurred at the initial stage of thermal cycling testing but did not directly cause the spallation of TBC. The mesh density of vertical cracks increased following thermal cycles. Calculation by finite elements analysis showed that a larger shear stress was generated by the formation of the vertical cracks just like what in the edge of the specimen. After thermal cycling testing, when the strength of equiaxial grain regions or thermally grown oxidation layer became lower than the shear stress, the spallation occurred along the vertical crack network.

Key words: thermal barrier coating (TBC) electron beam physical vapor deposition (EB-PVD) thermal cycling

Received: 20 December 2004

ZTFLH:

TG174.451

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	CHEN Liqiang
	GONG Shengkai
	XU Huibin

URL:

https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2005/V41/I9/979

[1] Nusier S Q, Newaz G M, Chaudhury Z A. Int J Solid Struct, 2000; 37: 2495
[2] Wang J S, Evans A G. Acta Mater, 1999; 47: 699
[3] Evans A G, Mumm D R, Hutchinson J W, Meier G H, Pettit F S. Progr Mater Sci, 2001; 46: 505
[4] Sohn Y H, Kim J H,Jordan E H, Gell M. Surf Coat Technol, 2001; 146: 70
[5] AH M Y, Nusier S Q, Newaz G M. Int J Solid Struct,2001; 38: 3329
[6] Sfar K, Aktaa J, Munz D. Mater Sci Eng, 2002; A333: 351
[7] Rosier J, Baker M, Volgmann M. Acta Mater, 2001; 49: 3659
[8] Editor Committee of China Aviation Materials Manual. China Aviation Materials Manual. Vol.2, 2nd ed., Beijing: China Standard Press, 2002: 771 (中国航空材料手册编辑委员会．中国航空材料手册．第2卷, 第2版,北京:中国标准出版社, 2002:771)
[9] Zhou Y C, Hashida T. Int J Solid Struct, 2001; 38: 4235
[10] Bi X F, Xu H B, Gong S K. Surf Coat Technol, 2000; 130: 122
[11] Xu H B, Gong S K, Zhang Y, Zhang C X. Intermetallics, 2005; 13: 3154

[1]	Lei SUN,Minghe CHEN,Liang ZHANG,Fan YANG. Microstructures Evolution and Properties of Sn-Ag-Cu Solder Joints[J]. 金属学报, 2017, 53(5): 615-621.
[2]	Zaoyu SHEN,Limin HE,Guanghong HUANG,Rende MU,Jinwang GU,Weizhong LIU. MICROSTRUCTURES AND MECHANICAL PROPERTIES OF TiAl/Ti₃Al MULTI-LAYERED COMPOSITE[J]. 金属学报, 2016, 52(12): 1579-1585.
[3]	FANG Lu,DING Xianfei, ZHANG Laiqi, HAO Guojian, LIN Junpin. MICROSTRUCTURE STABILITY IN A FULLY LAMELLAR HIGH Nb－TiAl ALLOY AFTER LONG－TERM THERMAL CYCLING[J]. 金属学报, 2013, 49(11): 1416-1422.
[4]	PENG Xiao; LITiefan; LI Meishuan; MA Xinqing; PING Dehai(State Key Laboratory of Corrosion and Protection; Institute of Corrosion and Protection of Metals; Chinese Academy of Sciences; Shenyang 110015)(Laboratory of Atomic Imaging of Solids; Institute of Metal Reserch; Chinese Academy of Sciences; Shenyang 110015)(Manuscript received 1995-06-07; in revised form 1995-10-06). EFFECT OF Ni-La_2O_3 ELECTRODEPOSITED COMPOSITE FILM ON THERMAL CYCLING OXIDATION OF Ni[J]. 金属学报, 1996, 32(2): 180-186.
[5]	GENG Hongbin; HE Shiyu; LEI Tingquan (College of Materials and Engineering;Harbin Institute of Technology; Harbin 150001)(Manuscript received 1995-03-27; in revised form 1995-08-16). EFFECT OF THERMAL CYCLING ON MICROSTRUCTURE AND TENSILE PROPERTIES OF Ti-6Al-4V ALLOY[J]. 金属学报, 1996, 32(1): 51-56.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed