丝电爆制备纳米粉中的电极烧损和大颗粒形成  

Electrode Burning Loss and Formation of Micron-size Particles in Wire Electrical Explosion

作　　者：毕学松[1] 朱亮[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050

出　　处：《有色金属（冶炼部分）》2012年第8期48-50,57,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51061011)

摘　　要：分别通过接触式和气体放电式丝电爆法制备纳米粉,观察电极烧损情况并统计粉末中微米级大颗粒的比例。结果表明,气体放电式丝电爆过程电极烧损比较轻微,制备的粉末中微米级大颗粒比例较小,并且更有利于工程上连续实施。提高初始电压也可以减小粉末中微米级大颗粒的比例。Nanopowders were prepared with wire electrical explosion （WEE） of ＂contact＂ and ＂gas dis-charge＂ , respectively. The burning loss of electrodes was observed and the micro-size particle percentage was calculated. The results show that, during the process of WEE of ＂gas discharge＂, the ablation of elec-trodes is slight, the proportion of micro-size particles in nanopowders is smaller, and the WEE of ＂gas dis-charge＂ is more applicable for engineering. Furthermore, increasing the initial charging voltage could re-duce the proportion of micron-size particles.

关 键 词：丝电爆 纳米粉 初始电压 电爆产物 

分 类 号：TF123.14[冶金工程—粉末冶金]