Paper Title:
Fundamental Coating Development Study to Improve the Isothermal Oxidation Resistance and Thermal Cycle Durability of Thermal Barrier Coatings
  Abstract

Thermal barrier coatings(TBCs) are used in high temperature gas turbines to reduce the surface temperature of cooled metal parts such as turbine blades[1]. TBC consist of a bondcoat (e.g. MCrAlY where M is Co, Ni, CoNi, etc.) and a partially stabilized zirconia ceramic topcoat. Usually, the MCrAlY bondcoat is applied by LPPS (low pressure plasma spray) or HVOF(high velocity oxi-fuel spray). The topcoat is applied by APS (atmospheric plasma splay) or EB-PVD (electron beam-physical vapor deposition). High temperature oxidation properties, thermal barrier properties and durability of TBC are very important to increase the reliability in high temperature service. In this study, new TBC has been investigated. The new TBC consists of a two-layered bondcoat (LPPS-MCrAlY plus dense PVD overlay MCrAlY) and the EB-PVD type YSZ columnar structure topcoat. As a result of evaluation tests, it was confirmed that the new TBC had better oxidation properties and durability than a conventional TBC system.

  Info
Periodical
Materials Science Forum (Volumes 522-523)
Edited by
Shigeji Taniguchi, Toshio Maruyama, Masayuki Yoshiba, Nobuo Otsuka and Yuuzou Kawahara
Pages
247-254
DOI
10.4028/www.scientific.net/MSF.522-523.247
Citation
T. Torigoe, H. Oguma, I. Okada, G. C. Xu, K. Fujita, A. Nakayama, T. Maruyama, K. Nishio, "Fundamental Coating Development Study to Improve the Isothermal Oxidation Resistance and Thermal Cycle Durability of Thermal Barrier Coatings", Materials Science Forum, Vols. 522-523, pp. 247-254, 2006
Online since
August 2006
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: W.G. Mao, C.Y. Dai, Yi Chun Zhou, Q.X. Liu
Abstract:This paper investigated the thermo-mechanical bending failure characteristic of air plasma-sprayed (APS) thermal barrier coating (TBC)...
239
Authors: Xian Xiu Mei, Yue Liu, Xue Ma, You Nian Wang
Chapter 14: Material Physics & Chemistry
Abstract:The thermal barrier coatings (TBC) of the yttria-stabilized zirconia (YSZ) has been deposited by the atmospheric plasma spraying...
2377
Authors: Marek Góral, Maciej Pytel, Pawel Sosnowy, Slawomir Kotowski, Marcin Drajewicz
Abstract:In the paper first results of TBCs deposition by LPPS-Thin Film method were presented. The LPPS-Thin Film is a new type of processes for...
1
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