کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
238151 465744 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of uniformly dispersed YAG ultrafine powders by co-precipitation method with SDS treatment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Preparation of uniformly dispersed YAG ultrafine powders by co-precipitation method with SDS treatment
چکیده انگلیسی

Uniformly dispersed yttrium aluminum garnet (Y3Al5O12, YAG) ultrafine powders were synthesized by co-precipitating a mixed solution of aluminum and yttrium nitrates with ammonium hydrogen carbonate in the presence of sodium dodecyl sulfate (SDS) as dispersing agent. The primary purpose of introducing SDS was to protect YAG particles from agglomeration. The evolution of phase composition and micro-structure of the as-synthesized YAG powders were characterized by thermogravimetry/differential scanning calorimetry, X-ray diffraction, infrared spectra and scanning electron microscopy. The results showed that phase-pure YAG powders could be achieved by calcination of the precursor at 900 °C for 2 h. Uniformly dispersed YAG powders with a particle size of approximately 90–100 nm were obtained with optimum molar ratio of Al3+ to SDS at 2. And excessive SDS restrained good dispersion of the YAG powders. The dispersion mechanism of SDS in the preparation process was discussed.

Sodium dodecyl sulfate (SDS), as a common dispersing agent, was adopted to synthesize uniformly dispersed YAG ultrafine powders by co-precipitation method with ammonium hydrogen carbonate as precipitant. Uniformly dispersed YAG powders with a particle size of approximately 90–100 nm were obtained with optimum molar ratio of Al3+ to SDS at 2. The dispersion mechanism of SDS in the preparation process was also discussed.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 196, Issue 1, 25 November 2009, Pages 26–29
نویسندگان
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