摘要
用超声喷雾热转换法直接制成纳米级非晶复合氧化物粉末,并采用XRD,TEM和TG-DSC手段研究纳米WO_3-CuO复合氧化物粉末的热解与非晶向微晶的转化过程.结果表明用超声喷雾热转换法可以工业化大规模生产纳米级WO_3-CuO复合氧化物粉末,粉末平均粒径<50nm,颗粒形状为球形.
The method of airflow ultrasonic spray thermochemical process was discussed, which can be used to produce nano-scaled amorphous WO3-CuO composite powders directly. The hot decomposition process and the conversion process from amorphous to micro-crystal of the powders were investigated by XRD, TEM and TG-DSC. The results show that it is feasible to industrially produce nano-scaled WO3-CuO composite powders on a large scale by means of airflow ultrasonic spray thermochemical process. The average particle size of WO3-CuO composite powders is less than 50 nm, and their shape is spherical.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2004年第3期293-296,共4页
Journal of University of Science and Technology Beijing
基金
国家"863"(No.2002AA331090)
国家自然科学基金(No.50074007
50004001)
关键词
超声喷雾转换法
纳米复合粉末
W-Cu合金
Copper alloys
Decomposition
Nanostructured materials
Spraying
Tungsten alloys
Ultrasonic applications
