激波对电场辅助冷喷涂纳米粒子速度的影响Effects of shock wave on velocity of nano-particles in electrostatic-force assisted cold spraying
唐文勇,陈清华,柴伟伟,陈子云,张学清,贺志强
摘要(Abstract):
通过建立二维数值分析模型,分析了不同进气温度及压力时,带电纳米粒子在激波和电场力耦合作用下的加速特性以及对粒子撞击基板速度的影响。结果表明:弓形激波气体压缩层是造成纳米粒子减速的主要因素,弓形激波气体压缩层越薄粒子撞击基板时速度越大;外加电场时,带电纳米粒子撞击基板的速度得到较大提升。
关键词(KeyWords): 冷喷涂;电场辅助加速;激波;纳米粒子;数值模拟
基金项目(Foundation): 国家自然科学基金资助项目(50276073);; 重庆市自然科学基金(CSTC,2011BB4074)
作者(Author): 唐文勇,陈清华,柴伟伟,陈子云,张学清,贺志强
DOI: 10.13289/j.issn.1009-6264.2012.11.005
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