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Effect of test parameters in the exposure of Ca–Mg–Al–silicate on yttria stabilized zirconia |
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| Authors: | Benjamin Kowalski Jamesa Stokes Patrick E Albert Pete E Lauer Douglas E Wolfe |
| Affiliation: | 1. NASA Glenn Research Center, Cleveland, Ohio, USA;2. Applied Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania, USA;3. Applied Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania, USA
Materials Science and Engineering Department, The Pennsylvania State University, University Park, Pennsylvania, USA Ken and Mary Alice Lindquist Nuclear Engineering Department, The Pennsylvania State University, University Park, Pennsylvania, USA Engineering Science and Mechanics Department, The Pennsylvania State University, University Park, Pennsylvania, USA Additive Manufacturing and Design Department, The Pennsylvania State University, University Park, Pennsylvania, USA |
| Abstract: | Jet engine components need protective coatings to function against both high-temperature and environmental effects. Ingested calcium–magnesium–aluminosilicates (CMAS) dust particulates are extremely detrimental to the life of the coatings. However, many methods exist to investigate the infiltration of CMAS into these coatings with each method exploring a different aspect of the degradation process. To probe the overlap in these methods, this study focuses on the effect of grain size, areal density, and aspect ratio on the infiltration of CMAS into yttria stabilized zirconia. The infiltration depths ranged from 6 up to 85 µm depending on the test conditions. |
| Keywords: | calcium–magnesium–aluminosilicate environmental barrier coating grain size testing methodology thermal barrier coating yttria stabilized zirconia |