Aluminum silicon alloy–graphite powders are composite
powders providing consistent quality clearance control coatings for gas turbine engines.
Clearance control coatings are used in applications where
rotating components may come into contact with the coating
as a result of design intent or operational surges. The coatings are designed to minimize the wear to the rotating components while maximizing gas path efficiency by providing
clearance control in seal areas
Metco 310NS should be applied using the Combustion
Powder Thermospray™ process. Metco 311NS and
Metco 313NS should be applied via the Atmospheric Plasma
Spray process.
Typical Uses and Applications :
- Specifically developed for abradable coatings in clearance control applications, particularly in the compressor
section of gas turbine engines
- Coatings from these powders are suited to rub against
titanium, nickel alloy and steel components
- Aluminum silicon graphite coatings are generally used in
low temperature applications with operating temperatures
up to 415 °C (780 °F)
- Metco 310NS provides higher temperature capability
up to approximately 480 °C (900 °F)
