کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475136 991109 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of hot corrosion behaviors of plasma-sprayed nanostructured and conventional YSZ thermal barrier coatings exposure to molten vanadium pentoxide and sodium sulfate
ترجمه فارسی عنوان
مقایسه رفتارهای خوردگی داغ در مواجهه با پوشش حرارتی نانوساختار و مرسوم طبیعی پاشش پلاسمایی با پنتوکسان وانادیوم و سولفات سدیم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The purpose of the current study was evaluation and comparison of hot corrosion behaviors of plasma-sprayed conventional and nanostructured yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs). Hot corrosion studies were performed on the surface of coatings in the presence of a molten mixture of V2O5+Na2SO4 at 1000 °C for 30 h. Results indicated that the hot corrosion mechanisms of conventional and nanostructured YSZ coatings were similar. The reaction between corrosive salt and Y2O3 produced YVO4, leaching Y2O3 from YSZ and causing the detrimental phase transformation of zirconia from tetragonal to monoclinic. The nanostructured coating, as compared to its conventional counterpart, in spite of a further reaction with the corrosive salt, showed a higher degradation resistance during the hot corrosion test due to increased compliance capabilities resulting from the presence of an extra source of porosity associated with the nano-zones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 34, Issue 2, February 2014, Pages 485–492
نویسندگان
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