کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1626901 1516452 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of process parameters on the synthesis of YAG nano-crystallites in supercritical solvent
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of process parameters on the synthesis of YAG nano-crystallites in supercritical solvent
چکیده انگلیسی
Nano-scaled aluminum yttrium garnet (YAG) powders with a spherical morphology were prepared by a mixed-solvo-thermal method under moderate reaction conditions using inexpensive starting materials. The effects of the changing process parameters on phase evolution, constitute and morphology of the resulting samples were characterized by X-ray diffraction (XRD), DTA-TG, transmission electronic microscope (TEM) and HRTEM techniques. The results show that pure phase YAG powders can be successfully synthesized at 300 °C for 1 h when the volume ratio of ethanol to water is 2 or larger. The TEM results reveal that the YAG particles synthesized are well-dispersed fine spherical grains with a relatively narrow grain size distribution. Finally, the formation mechanism for solvo-thermal crystallization of YAG grains is proposed based on IR results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 421, Issues 1–2, 14 September 2006, Pages 298-302
نویسندگان
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