PlumX Metrics
Embed PlumX Metrics

Relation between the arc-root fluctuations, the cold boundary layer thickness and the particle thermal treatment

Journal of Thermal Spray Technology, ISSN: 1059-9630, Vol: 16, Issue: 5-6, Page: 919-926
2007
  • 21
    Citations
  • 0
    Usage
  • 18
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    21
    • Citation Indexes
      21
  • Captures
    18

Conference Paper Description

In plasma spraying, the arc-root fluctuations, modifying the length and characteristics of the plasma jet, have an important influence on particle thermal treatment. These voltage fluctuations are strongly linked to the thickness of the cold boundary layer (CBL), surrounding the arc column. This thickness depends on the plasma spray parameters (composition and plasma forming gas mass flow rate, arc current, etc.) and the plasma torch design (anode-nozzle internal diameter and shape, etc.). In order to determine the influence of these different spray parameters on the CBL properties and voltage fluctuations, experiments were performed with two different plasma torches from Sulzer Metco. The first one is a PTF4 torch with a cylindrical anode-nozzle, working with Ar-H plasma gas mixtures and the second one is a 3MB torch with either a conical or a cylindrical anode-nozzle, working with N-H plasma gas mixtures. Moreover, arc voltage fluctuations influence on particle thermal treatment was studied through the measurements of transient temperature and velocity of particles, issued from an yttria partially stabilized zirconia powder with a size distribution between 5 and 25 μm. © ASM International 2007.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know