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Iranian Journal of Materials Science and Engineering، جلد ۱۸، شماره ۳، صفحات ۱-۸
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عنوان انگلیسی Manufacturing and Structural Evaluation of Polymer Derived SiOC/TiC and SiOC/TiC/mullite Nanocomposites
چکیده انگلیسی مقاله Silicon oxycarbide (SiOC) materials derived from silicone attracted great attention for their superior high-temperature behavior. In the present study, Si(Ti)OC and Si(Ti,Al)OC nanocomposites, in which alkoxide precursors were used with the main silicone precursor, have been compared with SiOC material. Although in SiOC, C was bonded with Si in a carbon-rich SiOC phase, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) showed that TiC was the preferred state for C atoms upon adding Ti into the system. This claim was also substantiated by Raman spectroscopy, where adding Ti into the system lowered the intensity of the D band, indicating the high affinity of C to form crystalline TiC. In the Si(Ti,Al)OC nanocomposites synthesized by adding AlCl3 into the Si(Ti)OC system, mullite nanocrystals formed a superlattice structure with TiC. UV-vis spectra of the nanocomposites showed Si(Ti,Al)OC with mullite-TiC superlattice had a larger bandgap compared with Si(Ti)OC with only TiC nanocrystals.
کلیدواژه‌های انگلیسی مقاله SiOC nanocomposite,mullite,TiC,polymer-derived ceramics
نویسندگان مقاله | Amirhosein Paryab
Department of Materials Science and Engineering, Sharif University of technology, Tehran, Iran


| Toktam Godary
Department of Materials Science and Engineering, Sharif University of technology, Tehran, Iran


| Sorosh Abdollahi
School of Metallurgy and Materials Engineering, Iran University of science and technology, Tehran, Iran


| Mohsen Anousheh
Department of Materials Science and Engineering, Islamic Azad University Science and Research branch, Tehran, Iran


| Adrine Malek Khachatourian
Department of Materials Science and Engineering, Sharif University of technology, Tehran, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1978-2&slc_lang=en&sid=1
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زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research Paper
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