کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
619232 881844 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of microstructure and temperature on the erosion rates and mechanisms of modified EB PVD TBCs
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Effect of microstructure and temperature on the erosion rates and mechanisms of modified EB PVD TBCs
چکیده انگلیسی
This paper compares the relative erosion rates of ten different EB PVD TBCs tested at 90° impact at room temperature and at high temperature and discusses the results in term of microstructural and temperature effects. It was found that by modifying the coating deposition, such that a low density coating with a highly 'feathered' microstructure formed, generally resulted in an increase in the erosion rate at room temperature. When there was a significant change between the room temperature and the high temperature erosion mechanism it was accompanied by a significant decrease in the erosion rate, while additions of dopents was found to significantly increase the erosion rate at room and high temperature. However, all the modified coatings still had a lower erosion rate than a plasma sprayed coatings. So, although, relative to a standard 7YSZ coating, the modified coatings have a lower erosion resistance, they still perform better than PS TBCs and their lower thermal conductivities could make them viable alternatives to 7YSZ for use in gas turbine engines.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 267, Issue 11, 29 October 2009, Pages 1927-1934
نویسندگان
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