Abstract
Summary The low-pressure plasma spray coating process is established in gas turbine production for application to components (turbine blades, duct segments, etc) exposed to corrosive gases at high temperatures. Overlay coatings based on the MCrAlY alloy system (where M is Ni, Co, or Fe) are commonly used as oxidation- and corrosion- resistant coatings. The mechanical properties, such as the fatigue life, of the CoCrAlY alloy coating system at high temperature are investigated in comparison with those of uncoated unidirectionally solidified CM247LC and single crystal CMSX-2.
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