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1990 |
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Wednesday, May 05, 2010, Olivia Room 2:00 PM Gas Turbines 3 |
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A durable low K APS TBC |
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Lucy Liu* / Chromalloy Gas Turbine LLC, USA Peter Howard / Chromalloy Gas Turbine LLC, USA |
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A Durable Low K APS TBC Peter Howard Lucy Y. Liu Chromalloy Gas Turbine LLC Abstract An intensive challenge for aircraft and industrial gas turbine engines in the recent decades is to increase operating temperature to a maximum without overheating the metallic parts during engine service. This demands the thermal barrier coating to have high thermal insulation capability with low thermal conductivity and high durability in the increased turbine inlet temperature and hostile environment filled with oxygen, erodants, etc.. Chromalloy Gas Turbine LLC developed a new thermal barrier coating with a low thermal conductivity and an extended lifetime applied by Air Plasma Spray (APS) and Electron Beam Physical Vapor Deposition (EBPVD). The chemistry of the new coating is NdxZr1-xOy with Z dissolved in, where 0 |