Velocity of powder particles in plasma at low pressure
作者: Mrdak, Mihailo R.
刊名: Vojnotehnički glasnik, 2019, Vol.67 (2), pp.255-269
来源数据库: Ministry of defence of the Republic of Serbia - Vojnotehnicki glasnik / Military Technical Courier
DOI: 10.5937/vojtehg67-17121
原始语种摘要: Low pressure of inert gas in the vacuum chamber significantly affects the transfer of plasma particle velocity onto powder particles, residence time of powder particles in plasma and the kinetic energy of molten particles before the collision with the substrate. In addition to low pressure of inert gas in the vacuum chamber, the size and mass density of powder particles, together with plasma arc power, have the biggest impact on the average velocity of powder particles. To measure the velocity of powder particles in the vacuum chamber at low pressure, a laser speedometer is applied.The average velocity of molten powder particles V=s/t is calculated when the length of the path of powder particles that pass between two focus distances of the laser beam is divided by the time of particle...
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  • powder 粉末
  • vacuum 真空
  • pressure 压力
  • velocity 速度
  • plasma 深绿玉髓
  • density 密度
  • chamber 
  • granulate 使成粒状
  • average 平均
  • impact 冲击碰撞