کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460643 | 1516197 | 2017 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of continuous ZrB2 nanofibers derived from boron-containing polymeric precursors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fabrication of continuous ZrB2 nanofibers derived from boron-containing polymeric precursors Fabrication of continuous ZrB2 nanofibers derived from boron-containing polymeric precursors](/preview/png/5460643.png)
چکیده انگلیسی
Continuous ceramic nanofibers of ZrB2 were synthesized via electrospinning combining with polymeric precursor method. The electrospinning solution was prepared from the reaction of Polyzirconoxane (PZO) with 2-Hydroxybenzyl alcohol and boric acid followed by the addition of polyvinylpyrrolidone (PVP). The influences of the solution properties and B/Zr molar ratio on electrospinning were investigated. The electrospun precursors and heat-treated nanofibers were characterized by XRD, SEM, EDS, TEM and Raman. The results showed that pyrolysis at 350 °C helped to stabilize the fibers morphology and ZrB2 nanofibers were obtained by pyrolyzing the precursor fibers at 1400 °C for 2 h in argon. ZrB2 nanofibers maintained the excellent fibrous morphology in all the samples. ZrB2 nanofibers are composed of uniformly nanosized ZrB2 particles. The average crystallite size of ZrB2 particles using Scherrer equation is 25 nm. The atomic percentages of zirconium and boron in the product formed in argon at 1400 °C were 17.06% and 33.73% respectively, which is very close to the stoichiometric ZrB2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 697, 15 March 2017, Pages 318-325
Journal: Journal of Alloys and Compounds - Volume 697, 15 March 2017, Pages 318-325
نویسندگان
XueYu Tao, ShiXiang Zhou, ZhiMei Xiang, Jie Ma, RuiLin Hou, Yabo Zhu, XianYong Wei,