کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7899176 | 1510142 | 2013 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gd2Zr2O7 and Nd2Zr2O7 pyrochlore prepared by aqueous chemical synthesis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Gd2Zr2O7 and Nd2Zr2O7 pyrochlore prepared by aqueous chemical synthesis Gd2Zr2O7 and Nd2Zr2O7 pyrochlore prepared by aqueous chemical synthesis](/preview/png/7899176.png)
چکیده انگلیسی
Pyrochlore structured Gd2Zr2O7 and Nd2Zr2O7 are produced via complex precipitation processing. A suite of characterization techniques, including FTIR, Raman, X-ray and electron diffraction, TEM, SEM as well as nitrogen sorption are employed to investigate the structural and grain size evolution of the synthesized and calcined powder. Results show that Gd2Zr2O7 with the pyrochlore structure are produced after calcination at 1400 °C for 12 h while Nd2Zr2O7 has already formed the pyrochlore structure at 1200 °C. This method allows the formation of dense materials at relatively low temperature, with bulk densities over 92% of the theoretical values achieved after sintering at 1400 °C for 50 h. This unique aqueous synthetic method provides a simple pathway to produce pyrochlore lanthanide zirconate without using either organic solvent and/or mechanical milling procedures, making the synthesis protocol an attractive potential scale-up production of highly refractory ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 33, Issues 15â16, December 2013, Pages 3273-3285
Journal: Journal of the European Ceramic Society - Volume 33, Issues 15â16, December 2013, Pages 3273-3285
نویسندگان
Linggen Kong, Inna Karatchevtseva, Daniel J. Gregg, Mark G. Blackford, Rohan Holmes, Gerry Triani,