Research progress of liquid metal atomization technology and preparation of its amorphous powders
LIU Jia-qi1, PANG Jing2, WANG Pu1, YANG Dong2, LI Xiao-yu2, ZHANG Jia-quan1
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Qingdao Yunlu Advanced Materials Technology Co., Ltd., Qingdao 266232, Shandong, China
Abstract：In the face of challenge for green and low-carbon development and energy structure upgrading, communication and electronic electric industries are increasingly demanding large current power inductors. As the raw material of magnetic powder core of advanced inductors urgently needed, amorphous powders have excellent magnetic conductivity at high frequency, thermal stability and corrosion resistance, which are far superior to other soft magnetic materials presently. However, as a kind of metastable material with short-range order and long-range disorder in atomic structure, production of amorphous powders is still one of the big challenges. Recently, liquid alloy atomization has become one of the main methods for the production of amorphous alloy powders with the advantages of stable powder properties, high cooling rate and mass production. Based on the analysis of characteristics and formation mechanism of amorphous materials, the principle and development of amorphous alloy powder prepared by gas atomization and water atomization are systematically described, and the current understanding of melt break-up and solidification mechanism in atomization process is summarized. Finally, several unsolved problems and the research status in the field of atomization are pointed out to provide some inspiration for atomization technology of amorphous powders.
刘佳奇, 庞靖, 王璞, 杨东, 李晓雨, 张家泉. 液态金属雾化成形及非晶合金制粉的研究进展[J]. 中国冶金, 2022, 32(2): 1-14.
LIU Jia-qi, PANG Jing, WANG Pu, YANG Dong, LI Xiao-yu, ZHANG Jia-quan. Research progress of liquid metal atomization technology and preparation of its amorphous powders[J]. China Metallurgy, 2022, 32(2): 1-14.
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2022, Vol. 32 
