Title :
Flame Spray synthesis of nanocrystalline alumina particles
Author :
Jolly, Bobu Manuel ; Divija, D. ; Kumar, B. Manoj ; Bhattacharya, Suryanarayana Shivakumar
Author_Institution :
Dept. of Metall. & Mater. Eng., Indian Inst. of Technol. Madras, Chennai, India
Abstract :
Nanocrystalline alumina particles were synthesized in an indigenously built Flame Spray Pyrolysis (FSP) setup. Aluminium nitrate nonahydrate dissolved in methanol-water mixture was atomized by using a jet nebulizer. The droplets were then pyrolyzed in an oxy-LPG (Liquefied Petroleum Gas) flame for yielding nanocrystalline alumina particles which were confirmed by x-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Particle morphology was studied using scanning electron microscopy (SEM). The flame spray pyrolysis method was successfully used to synthesize agglomerate free, nanosized alumina particles of about 20-50 nm (α + γ phase) diameter which became 70-100 nm (α phase) after calcination.
Keywords :
X-ray diffraction; aluminium compounds; calcination; nanofabrication; nanoparticles; pyrolysis; scanning electron microscopy; sprays; transmission electron microscopy; Al2O3; SEM; TEM; X-ray diffraction; XRD; agglomerate free nanosized alumina particles; alpha phase; alpha-gamma phase; aluminium nitrate nonahydrate; atomisation; calcination; flame spray pyrolysis setup; flame spray synthesis; jet nebulizer; liquefied petroleum gas flame; methanol-water mixture; nanocrystalline alumina particles; oxyLPG; particle morphology; scanning electron microscopy; size 70 nm to 100 nm; transmission electron microscopy; Powders; Alumina; FSP; Nanocrystalline materials; Nebulizer; Vapour phase synthesis;
Conference_Titel :
Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET), 2013 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4799-1377-0
DOI :
10.1109/ICANMEET.2013.6609363
