光ルミネッセンス法によるガスタービン用遮熱コーティングの界面酸化層検出

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2013/07/01

タイトル(英語): Detection of Thermally Grown Oxide Layer in Thermal Barrier Coating for Gas Turbines by Photoluminescence

著者名: 福地　哲生（電力中央研究所 電力技術研究所），江藤　修三（電力中央研究所 電力技術研究所），岡田　満利（電力中央研究所 エネルギー技術研究所），藤井　智晴（電力中央研究所 エネルギー技術研究所）

著者名(英語): Tetsuo Fukuchi (Central Research Institute of Electric Power Industry), Shuzo Eto (Central Research Institute of Electric Power Industry), Mitsutoshi Okada (Central Research Institute of Electric Power Industry), Tomoharu Fujii (Central Research Institute of Electric Power Industry)

キーワード: 遮熱コーティング，界面酸化層，クロムイオン，光ルミネッセンス，パルスレーザ，発光寿命　　thermal barrier coating，thermally grown oxide layer，chromium ion，photoluminescence，pulsed laser，emission lifetime

要約(英語): The characteristics of photoluminescence of Cr3+ in the thermally grown oxide (TGO) layer in thermal barrier coating (TBC) for gas turbine blades was evaluated. A pulsed Nd:YAG laser of wavelength 532nm was used to excite Cr3+ in the TGO layer in TBC specimens, and the luminescence was detected at 694nm. Photoluminescence of Cr3+ was observed for TBC specimens heated for 100 hrs and 1000 hrs at 1100℃, but was not observed for the specimen without heating. The intensity of photoluminescence of Cr3+ for the heated specimens showed two radiative lifetimes, which are thought to be the radiative lifetimes of Cr3+ in different metal oxides, possibly Al2O3 and AlYO3. Effects of self-absorption were not observed. In addition, the photoluminescence intensity was proportional to the excitation intensity, showing that the effects of saturation were absent.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.7 （2013）

本誌掲載ページ: 402-407 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/133/7/133_402/_article/-char/ja/