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CT Firm Unveils Chromate-Free Airplane Primer

Thursday, July 13, 2017

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A Connecticut aerospace firm has developed a new non-chromate primer for commercial airplanes that it says protects steel landing gear surfaces from corrosion as effectively as existing chromate primers.

UTC Aerospace Systems, a unit of United Technologies Corp., unveiled the new primer, with its EcoSky pigment, last month at the Paris Air Show. The chromate-free formulation is in compliance with the European Union’s REACH regulations, which will in the future restrict the use of some chromates, among other substances used in aerospace materials.

Airplane landing gear
© iStock.com / TommyIX

UTC Aerospace Systems has developed a new non-chromate primer for commercial airplanes that it says protects steel landing gear surfaces from corrosion as effectively as existing chromate primers.

Strontium chromate, one compound used in some aerospace coatings, has a sunset date of January 2019 under REACH.

Field Testing Underway

UTC says it has conducted laboratory testing on the chromate-free primer, and is in the process of field-testing in partnership with Porter Airlines; the company says the product is the first chromate-free primer for use on steel components of commercial airlines.

The company is also developing zinc nickel plating for steel components as a drop-in replacement for cadmium and titanium cadmium plating.

"This is part of UTRC's mission—to quickly transition world-class science and technology to our businesses enabling industry-unique solutions for our customers," said Steve Tongue, senior director, UTC Aerospace Systems Program Office, United Technologies Research Center. "There are significant technology hurdles to overcome within the aerospace industry as we work to meet these vital REACH requirements. We still have a long way to go, but are encouraged by the recent advances we've made."

   

Tagged categories: Aerospace; Primers; Research and development

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