Details

High energy Axial Plasma spray technique is capable to spraying powders and fine particle suspensions. In comparison with conventional radially injected plasma spray systems, the axially injected powder particles attain better momentum and greater heat transfer while travelling along the plasma plume. Therefore, the axial plasma sprayed coatings exhibit good deposition rate and efficiency and, offer possibilities of engineering the microstructure with dense, porous and cracked features.

Fine structured coatings provide improved properties than micron-sized coatings. However, the fluidized powder feeding arrangement are incapable of injecting fine particles, which necessitates the use of liquid-based feeding either as suspensions or solution precursor-based spraying. Additional capabilities of axial plasma spraying can be realized through efficient spraying of fine particle suspensions which otherwise are difficult with radial injection systems. Axial suspension plasma spray (ASPS) is an emerging coating technology using fine-sized powder particles suspended in a suitable solvent such as water or ethanol and injected into the plasma flame to get desired microstructure.

Model and Make

Northwest Mettech Corp., Canada, M600 Axial III Plasma Spray System with Nanofeed suspension delivery unit

Specifications

  • High energy plasma power up to 150 kW to spray wide ranging ceramics, cermet’s, alloys, metal powders and fine particle suspensions
  • Plasma jets: up to three, converging mode using Argon, Nitrogen, Hydrogen
  • Axial Feedstock injection along the plasma flow
  • Dual feed Axial Plasma Spray Torch configured to spray powders and suspensions
  • Six-axis Robotic torch handling and a tilting turn table