ガスタービン用遮熱コーティングの界面酸化層検出へのLED光源の適用性評価

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: 2014/06/01

タイトル(英語): Evaluation of Applicability of LED Light Sources to Detection of Thermally Grown Oxide Layer in Thermal Barrier Coating for Gas Turbines

著者名: 福地　哲生（（一財）電力中央研究所 電力技術研究所），江藤　修三（（一財）電力中央研究所 電力技術研究所），岡田　満利（（一財）電力中央研究所 エネルギー技術研究所），藤井　智晴（（一財）電力中央研究所 エネルギー技術研究所）

著者名(英語): Tetsuo Fukuchi (Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry), Shuzo Eto (Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry), Mitsutoshi Okada (Energy Engineering Research Laboratory, Central Research Institute of Electric Power Industry), Tomoharu Fujii (Energy Engineering Research Laboratory, 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，発光ダイオード，非破壊検査　　thermal barrier coating，thermally grown oxide layer，chromium ion，photoluminescence，light emitting diode，nondestructive testing

要約(英語): The applicability of LED light sources to detection of thermally grown oxide (TGO) layer in thermal barrier coating (TBC) for gas turbines was evaluated. A green LED of center wavelength 540 nm was found to be more efficient than a blue LED of center wavelength 460 nm to excite Cr3+ in the TGO layer. Using the green LED, photoluminescence was observed at 694 nm for TBC specimens heated at 1100℃. The dependence on the heating time was the same as the case of laser excitation. Using a green LED light source with higher power, photoluminescence was also observed for specimens heated at 1000℃. The results indicated that an inexpensive TGO detection system can be constructed using LED light sources.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.6 （2014）

本誌掲載ページ: 362-368 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/134/6/134_362/_article/-char/ja/