کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1474014 991072 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Z < 60- Rare earth promoted α-Si3N4 solid solution: Praseodymium
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Z < 60- Rare earth promoted α-Si3N4 solid solution: Praseodymium
چکیده انگلیسی

So long, larger sized rare earth cations than Neodymium (Z = 60) were reported to form α-SiAlON either in a multi-cation system containing smaller cations or by following special processing conditions. In this study, Praseodymium (Z = 59) alone is observed for the first time to promote α-SiAlON as a single crystalline phase, prepared under conventional processing conditions of heating and cooling cycle. The appearance of α-SiAlON is restricted to the compositional area corresponding to a high level substitution of m(RE1/3AlN) for m(SiN) bonds. Microstructure exhibits strain contrast in grains and array of dislocations in low angle grain boundary indicating deformation in lattice.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 35, Issue 14, November 2015, Pages 4011–4016
نویسندگان
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