Preparation of Nanocrystalline γ-Alumina using Ultrasonic Technique

摘要：

The γ-alumina powder is a potential material for washcoat application. This paper shows the preparation of γalumina using ultrasonic technique in order to obtain nanocrystalline of γ-alumina powder. The 50 gr of the γ-alumina powders was treated in the 250 gr ethanol solution using ultrasonic technique within 10, 20, 30, and 60 minutes, respectively. The process of sonication was set at the fixed frequency (18.520 kHz) and current of 2 A. Crystallite size was evaluated by using X-ray diffraction (XRD) data based with Scherrer analysis and WilliamsonHall method. The microstructural characterization of the γ-alumina powders was observed using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) analysis. The result shows that the optimum of nanocrystalline size of γ-alumina at ultrasonic process for 30 minutes are approximately 4.80 nm and 29.50 nm with Scherrer and Williamson-Hall calculation, respectively.

关键词： γ-Alumina Ultrasonic X-ray diffraction Microstructure

作者: DARWIN Sebayang ADE Firdianto YANUANDRI Putrasari EGI Agustian HENDI Saryanto PUDJI Untoro

作者单位: Advanced Manufacturing and Materials Center (AMMC),Faculty of Mechanical and Manufacturing Engineeri Center for Technology of Nuclear Industry Materials,National Nuclear Energy Agency (BATAN),Kawasan P

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 1034-1038

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）