Paper Title:
An Experimental Investigation of Interface Fracture Characteristic of APS Thermal Barrier Coating System under Bending at 1000 °C
  Abstract

This paper investigated the thermo-mechanical bending failure characteristic of air plasma-sprayed (APS) thermal barrier coating (TBC) system at 1000 oC by three-point bending test. A through-width surface pre-crack on the centre surface of the top ceramic coating (TC) in TBC sample was firstly designed and made by air plasma spraying technology. The fracture characteristic and spallation phenomena of the TBC were investigated under bending test in air at 1000 oC. The effects of constant displacement rate, span width of bending equipment and thermal aging time on the thermo-mechanical bending failure of the APS TBC system were slight at 1000 oC. Using SEM observations and EDX analysis, the interface cracks initiation, propagation and coalescence were discussed in detail. Furthermore, the fracture surface located within the TBC close to the TBC/TGO interface for all APS TBC samples under bending at 1000 oC.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
239-242
DOI
10.4028/www.scientific.net/KEM.353-358.239
Citation
W.G. Mao, C.Y. Dai, Y. C. Zhou, Q.X. Liu, "An Experimental Investigation of Interface Fracture Characteristic of APS Thermal Barrier Coating System under Bending at 1000 °C", Key Engineering Materials, Vols. 353-358, pp. 239-242, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hong Yu Qi, Xiao Guang Yang, Rui Li, Hong Liang Wei
Abstract:Thermal barrier coatings (TBCs) have received increased attention for advanced gas turbine engine application. The oxidation damage plays an...
595
Authors: Young Seok Sim, Sung Il Jung, Jae Young Kwon, Je Hyun Lee, Yeon Gil Jung, Ung Yu Paik
Abstract:The effects of bond coat nature in thermal barrier coating (TBC) systems on the delamination or fracture behavior of the TBCs with different...
343
Authors: Shu Juan Dong, Bo Song, Bernard Hansz, Han Lin Liao, Christian Coddet
Abstract:Depending on the oxidation extent and the surface roughness after coating manufacturing, CoNiCrAlY coating displays different performance in...
268
Authors: Widyastuti, Kusriantoko Parindra, Lilis Mariani, Hosta Ardhyananta, Sulistijono
Chapter 5: Surfaces, Coatings and Hardening of Materials for Industrial Application
Abstract:TBC (Thermal Barrier Coating) with YSZ-Al2O3/YSZ as top coat (TC) and MCrAlY alloy as bond coat (BC) marked as...
338