کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438425 | 1398184 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single-source-precursor synthesis, microstructure and high temperature behavior of TiC-TiB2-SiC ceramic nanocomposites
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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: Single-source-precursor synthesis, microstructure and high temperature behavior of TiC-TiB2-SiC ceramic nanocomposites Single-source-precursor synthesis, microstructure and high temperature behavior of TiC-TiB2-SiC ceramic nanocomposites](/preview/png/5438425.png)
چکیده انگلیسی
Newly developed TiC-TiB2-SiC ceramic nanocomposites were successfully synthesized by a novel single-source-precursor approach, with allylhydridopolycarbosilane (AHPCS), bis(cyclopentadienyl) titanium dichloride (Cp2TiCl2) and triethylamine borane (TEAB) as starting materials. The obtained single-source-precursor was characterized by Fourier transform infrared spectra (FT-IR), which confirms that hydroboration (C=C/B-H) and dehydrochlorication (Si-H/Cp2TiCl2) reactions were involved to introduce B and Ti elements into the AHPCS chains. The structural evolution of single-source-precursors, phase composition and chemical composition of the obtained ceramics were investigated by FT-IR, X-ray diffraction (XRD) and elemental analysis. High temperature behavior of the resultant TiC-TiB2-SiC ceramic nanocomposites with respect to decomposition as well as crystallization was carefully checked by XRD and mass loss after annealing at high temperatures of 1600 and 1800 °C. Transmission electron microscopy (TEM) was used to further observe the microstructure of TiC-TiB2-SiC nanocomposites, which again confirms the crystalline phases consist of nanoscaled β-SiC, TiC and TiB2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 5949-5956
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 5949-5956
نویسندگان
Zhaoju Yu, Yaxing Pei, Shuyi Lai, Shuang Li, Yao Feng, Xinya Liu,