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HOW IT
WORKS |
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This process utilizes
compressed Air or Nitrogen
as a carrier gas with pressures below 10 bar and typically in
the 6 bar range. The carrier gas is heated within the gun to
temperatures up to about 600˚C. The powders used with the Dymet®
Low-Pressure cold spray process typically include ceramics. The
majority of these ceramic particles do not become entrapped
within the coating because they are sprayed at particle
velocities well below their critical velocity. The role of the
ceramics is to act as a “hammer” for increasing the density of
the coating as well as improving the deposition efficiency.
Deposition efficiencies
with the Low Pressure Cold Spray process typically do not exceed
50%.
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