Plasma/particle interaction in subsonic argon/helium thermal plasma jets

Conference · Fri Jan 01 00:00:00 EST 1993

OSTI ID:6649819

Swank, W D; Fincke, J R; Haggard, D C

Understanding the behavior of a particle and the interactions between a particle and the plasma surrounding it is important to the development and optimization of the plasma spray coating process. This is an experimental study of the interaction between a subsonic thermal plasma jet and injected nickel-aluminum particles. The velocity, temperature and composition of the gas flow field is mapped using an enthalpy probe/mass spectrometer system. The particle flow field is examined by simultaneously measuring the in-flight size, velocity, and temperature of individual particles. The complex interaction between the gas and particle flow fields is examined by combining the two sets of data. Particle and gas temperatures and velocities are compared in the vicinity of a nominal substrate standoff distance and axially along the median particle trajectory. The temperature and velocity difference is shown to vary substantially depending on the particle's trajectory. By the time a particle on the median trajectory reaches the nominal substrate stand off of 63.5 mm it is transferring it's heat and momentum to the plasma gas.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6649819
• Report Number(s): EGG-M-92454; CONF-9306130-1; ON: DE93010808
• Resource Relation: Conference: National thermal spray conference, Anaheim, CA (United States), 7-11 Jun 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
PLASMA ARC SPRAYING
EVALUATION
ALUMINIUM ALLOYS
ARGON
ENTHALPY
FLOW RATE
GAS FLOW
HELIUM
JETS
MASS SPECTROSCOPY
MASS TRANSFER
MEASURING METHODS
NICKEL ALLOYS
PLASMA
POWDERS
ALLOYS
DEPOSITION
ELEMENTS
FLUID FLOW
FLUIDS
GASES
NONMETALS
PHYSICAL PROPERTIES
RARE GASES
SPECTROSCOPY
SPRAY COATING
SURFACE COATING
THERMODYNAMIC PROPERTIES
360101* - Metals & Alloys- Preparation & Fabrication
420200 - Engineering- Facilities
Equipment
& Techniques