High-temperature erosion of plasma-sprayed, yttria-stabilized zirconia in a simulated turbine environmentA series of rig calibration and high temperature tests simulating gas path seal erosion in turbine engines were performed at three impingement angles and at three downstream locations. Plasma sprayed, yttria stabilized zirconia specimens were tested. Steady state erosion curves presented for 19 test specimens indicate a brittle type of material erosion despite scanning electron microscopy evidence of plastic deformation. Steady state erosion results were not sensitive to downstream location but were sensitive to impingement angle. At different downstream locations specimen surface temperature varied from 1250 to 1600 C (2280 to 2900 F) and particle velocity varied from 260 to 320 m/s (850 to 1050 ft/s). The mass ratio of combustion products to erosive grit material was typically 240.
Document ID
19850057511
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Handschuh, R. F. (NASA Lewis Research Center; U.S. Army Propulsion Laboratory Cleveland, OH, United States)