CHROMALLOY NEW BARRIER COATING ENHANCES AIRCRAFT ENGINE EFFICIENCY

Dino D'Amore
By Dino D'Amore February 2, 2011 15:35

CHROMALLOY NEW BARRIER COATING ENHANCES AIRCRAFT ENGINE EFFICIENCY

Chromalloy says its new thermal barrier coating enhances the performance of gas turbine engines.

“Chromalloy’s new thermal barrier coating – the RT-35 Low K coating – provides lower thermal conductivity, which allows higher engine temperatures,” said Dr Peter Howard, vice president, technology and quality assurance.

The RT-35 Low K coating was patented by Chromalloy in 2006 and certified by the Federal Aviation Administration (FAA) in 2010 for use on the PW4000 second stage high pressure turbine blade after a series of tests confirming its low thermal conductivity, high thermal cycle durability and other attributes.

The RT-35 Low K coating provides a layer of insulation to the base metal component and underlying bond coating surface of a turbine blade from the extreme heat of the combustion gases during engine during operation.

“The coating provides 50-percent lower thermal conductivity, allowing engines to perform at higher temperatures,” Howard said.  “Engines produce greater thrust when operating at higher temperature – and they can operate on the same amount of fuel as powerplants that operate at lower temperatures.

“Chromalloy’s RT-35 Low K coating is a critical driver for the engine to deliver greater fuel efficiency to the operator,” he said.

RT-35 Low K coating increases the oxidation and corrosion resistance of the underlying bond coating as it is cooler and thus extends the life of the engine components – another cost saving for the operator.

Dino D'Amore
By Dino D'Amore February 2, 2011 15:35
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