A FACILE SYNTHESIS OF CA-A SALON NANOPOWDER VILA POLYACRYLAMDE GEL METHOD
سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 446
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شناسه ملی سند علمی:
UFGNSM03_059
تاریخ نمایه سازی: 10 تیر 1396
چکیده مقاله:
we report here a new and novel method based on a polyacrylamide hyrogel-combustion process to prepare Ca-o. SiAlON nanopowder with the composition of CalSigAls ON15. In this route, three-dimensional (3D) polyacrylamide network provide nano-cavities for growth of nanoparticles and carbon for carbothermal reduction-nitridation (CRN) process. The homogeneous dried xerogel was heated at 1450C for 60 min using nitrogen flow as a nitridation agent. The crystalline structures of as-prepared nanopowders were characterized by powder X-ray diffraction (XRD). The morphology and particle size were also examined by field emission electron microscopy (FESEM). As a result, neither unreacted phase nor impurity was observed after soaking time of 1 hour. Based on the FESEM observation, the Ca-o. SiAlON nanopowders have mean particle size around 50 nm.
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نویسندگان
II. NAJAFI
Nanotechnology Group, Faculty of Engineering, Tarbiat Modares University, Tehran, P.O. Box. ۱۴۱۱۵-۱۴۳ Islamic Republic of Iran
M. Kokabi
Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, P.O Box: ۱۴۱۱۵-۱۱۴, Islamic Republic of Iran