Characterization of thermally grown oxide on cold sprayed CoNiCrAlY bond coat in thermal barrier coating

Abreeza Manap, Dowon Seo, Kazuhiro Ogawa

研究成果: Conference contribution

8 被引用数 (Scopus)

抄録

This paper presents the results of a study of the microstructure and oxidation behavior of thermal barrier coating (TBC) with air plasma sprayed (APS) yttria-stabilized zirconia (YSZ) top coat and CoNiCrAlY bond coat deposited using two different spraying techniques, low pressure plasma spray (LPPS) and cold spray (CS). The objective is to investigate the thermally grown oxide (TGO) thickness and oxide scale composition of TBC subjected to isothermal oxidation and creep tests at 900 °C by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometry (EDX) analyses in order to evaluate the reliability of the CS technique. It was found that the TGO thicknesses for TBC with CS bond coats were smaller and the TGO was composed of mainly alumina with little or no mixed oxides. TGO growth rate was also affected by the applied stress. Smaller TGO thicknesses were observed for the noncreep TBC for both CS and LPPS bond coats. Overall findings indicate that the oxidation behavior of the TBC with CS bond coat is superior compared to that of the TBC with LPPS bond coat.

本文言語English
ホスト出版物のタイトルHigh-Temperature Oxidation and Corrosion 2010, ISHOC-10
出版社Trans Tech Publications Ltd
ページ324-329
ページ数6
ISBN(印刷版)9783037852354
DOI
出版ステータスPublished - 2011
イベント3rd International Symposium on High-Temperature Oxidation and Corrosion, ISHOC-10 - Zushi, Japan
継続期間: 2010 11 82010 11 11

出版物シリーズ

名前Materials Science Forum
696
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other3rd International Symposium on High-Temperature Oxidation and Corrosion, ISHOC-10
CountryJapan
CityZushi
Period10/11/810/11/11

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント 「Characterization of thermally grown oxide on cold sprayed CoNiCrAlY bond coat in thermal barrier coating」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル