کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1663614 1517709 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Luminescence sensing of temperature in pyrochlore zirconate materials for thermal barrier coatings
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Luminescence sensing of temperature in pyrochlore zirconate materials for thermal barrier coatings
چکیده انگلیسی

Pyrochlore zirconates are alternative materials to the presently used yttria-stabilized zirconia (7YSZ) for thermal barrier coatings. In this work, the use of europium as a solid-solution chromophore dopant is explored for measuring temperature in pyrochlore zirconates. Europium doping is found to give rise to strong luminescence as well as characteristic temperature-dependent luminescence lifetimes at high temperatures. Measurements of the luminescence lifetime of Eu-doped Gd2Zr2O7 and Eu2Zr2O7 pyrochlores, as well as Eu-doped YSZ, indicate sensitivity to temperature up to at least 1200 °C. The maximum temperature for Eu-doped Sm2Zr2O7 is lower, about 1000 °C, for the dopant concentration used. These measurements provide the basis for non-contact sensing of temperature in europium-doped pyrochlores used in coatings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 200, Issues 5–6, 21 November 2005, Pages 1264–1269
نویسندگان
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