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Synthesis of titanium carbide nanopowder from sol gel derived precursor

عنوان مقاله: Synthesis of titanium carbide nanopowder from sol gel derived precursor
شناسه ملی مقاله: ICC12_108
منتشر شده در دوازدهمین کنگره سرامیک ایران در سال 1398
مشخصات نویسندگان مقاله:

Sanaz Rahro Khajeh - Faculty of materials science and Engineering, Iran university of science and Technology, Tehran, Iran
Farhad Golestani Fard - Faculty of materials science and Engineering, Iran university of science and Technology, Tehran, Iran
Mohammad Mirkazemi - Faculty of materials science and Engineering, Iran university of science and Technology, Tehran, Iran
Mahdyar Taheri - ustralial national university Iran university of Science and Technology

خلاصه مقاله:
titanium carbide nanopowder was synthesized by sol–gel method using tetra-n-butyl orthotitanateas titanium source and saccharose as carbon source. The sol-gel processes have been controlledby ethyl aceto acetate. Yellowish sol was placed in air for ۲۴ h under continuous stirring to get agel. A dried gel was obtained after the gel was heated in a temperature range of ۱۱۰–۱۲۰ ℃ for۱.۵ h. When heat-treated at ۵۴۰ ℃, gels transformed into intimately mixed amorphous carbon andnanosized tetragonal TiO۲. Further heat treatments above ۱۰۰۰ ℃-۱۲۰۰ ℃ led to the formation ofmagneli phases. Increasing the temperature to ۱۳۰۰ ℃ and ۱۴۰۰ ℃ led to formation of titaniumcarbonitrides and pure titanium carbide. Powders were assessed using X-ray diffraction, X-rayfluorescence (XRF) analysis, Dynamic light scattering (DLS) and scanning electron microscopy.The average size of the TiC particles was found to be about ۴۰ nm.

کلمات کلیدی:
Sol-gel process, titanium carbide, nano powders, carbothermal nitridation.

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1904910/