کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1474869 991103 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Melting index characterization and thermal conductivity model of plasma sprayed YSZ coatings
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Melting index characterization and thermal conductivity model of plasma sprayed YSZ coatings
چکیده انگلیسی

The melting index of particle was measured to quantitatively characterize the spraying parameters of as-sprayed YSZ coatings. Moreover, new and reliable representation of melting index was achieved, using in-flight particle temperature and velocity. The prediction of microstructure features, such as total porosity and spheroidal porosity of as-sprayed coatings, could be available by the quantitative relationship between melting index and porosity. Based on the real microstructure characteristics, finite element models were generated to simulate heat transfer and calculate thermal conductivity of coatings. The large deviation between the experimental thermal conductivity and simulation results was attributed to the influence of microcracks, which was not shown in as-analyzed images due to resolution limit. Taking all the effects of microcracks and porosity into account comprehensively, the calculation model of thermal conductivity was established with the calculated error lower than 10%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 14, November 2012, Pages 3701–3707
نویسندگان
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