锆丝电爆炸法制备氧化锆纳米颗粒及其特征（英文）  

Synthesis of Zirconium Dioxide Nanoparticles by Electrical Explosion of Zirconium Wire and Characteristics

作　　者：王金相[1] 彭楚才[1,2] 戴和华 卢孚嘉 赵铮 Wang Jinxiang;Peng Chucai;Dai Hehua;Lu Fujia;Zhao Zheng(National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;College of Civil Engineering & Architecture, Hunan Institute of Science and Technology, Yueyang 414006, China;Nanjing Baotai Special Materials Co.,Ltd., Nanjing 211100, China;School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094 [2]湖南理工学院土木建筑工程学院,湖南岳阳414006 [3]南京宝泰特种材料股份有限公司,江苏南京211100 [4]南京理工大学能源与动力学院,江苏南京210094

出　　处：《稀有金属材料与工程》2019年第7期2118-2121,共4页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(11272158,11672138);Natural Science Foundation of Jiangsu Province(BK20151353)

摘　　要：在空气中采用锆丝点爆炸法合成了纳米二氧化锆颗粒,根据实测电流、电压和由此计算得到的能量沉积波形分析了电爆炸和纳米颗粒形成过程。发现锆丝气化后在锆丝蒸气和空气中形成电击穿现象诱发电爆炸并截断锆丝中的能量沉积。通过扫描电镜和透射电镜对产物进行了分析,发现纳米二氧化锆颗粒形貌呈近球形,粒度分布在30.6~69.4 nm之间。X射线衍射分析表明,产物由单斜晶型(mZrO2)和四方晶型(t-ZrO2)二氧化锆组成,随着充电电压的提高,四方晶型二氧化锆含量增加而单斜晶型含量变小,二者粒度都呈变大趋势。Zirconium dioxide(ZrO2)nanoparticles were synthesized by electrical explosion of zirconium wire in the air.The process of wire explosion and particles formation were analyzed according to the measured current,voltage and calculated deposited energy waveforms.Results show that electrical breakdown through the vapor of zirconium wire and the surrounding air result in an explosion and stop the energy deposition in wire.By scanning electron microscopy(SEM)and transmission electron microscope(TEM),it is found that the morphologies of synthesized nanoparticles are nearly spherical and the diameters range from 30.6 to 69.4 nanometers.X-ray diffraction(XRD)analysis show that the powders consist of monoclinic ZrO2(m-ZrO2)and tetragonal ZrO2(t-ZrO2).The content of t-ZrO2 increases while the content of m-ZrO2 decreases with the increasing charging voltage.In addition the average sizes of the m-ZrO2 and t-ZrO2 both increase when the charging voltage increases.

关 键 词：氧化锆纳米颗粒 电爆炸 能量沉积 电击穿 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ134.12[化学工程—无机化工]