کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476239 991148 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermochemical stability of the Y2O3–SiO2 system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Thermochemical stability of the Y2O3–SiO2 system
چکیده انگلیسی

A thermodynamic study was carried out in order to quantify the stability of yttrium silicates under different atmospheres (argon, air, moisture), and to predict their behaviour as an EBC. For this purpose, the partial pressures of gaseous species formed during the reactive vaporization in equilibrium with yttrium silicates were evaluated and compared to those over each oxide taken separately. The partial pressures of silicon and rare earth hydroxides at the equilibrium over rare earth silicates are lower than those over each single oxide. Thus yttrium silicates appear to be sufficiently stable to be promising materials to be used as environmental barrier coatings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 30, Issue 4, March 2010, Pages 905–910
نویسندگان
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