Reaction Mechanism of CaO-MgO-Al 2 O 3 -SiO 2 (CMAS) Corrosion in Pyrochlore Thermal Barrier Coatings

• Published in: Meeting abstracts (Electrochemical Society) Vol. MA2015-01; no. 13; p. 1126
• Main Authors: Wang, Honglong, Sheng, Zhizhi, Agubra, Victor, Zhang, Xingxing, Tarwater, Emily, Fergus, Jeff W.
• Format: Journal Article
• Language: English
• Published: 29.04.2015

Higher working temperatures improves the energy conversion efficiency in gas turbine engines so thermal barrier coatings are applied to protect the blades to increase the operating temperature.  However, CaO-MgO-Al 2 O 3 -SiO 2 (CMAS) from volcanic ash and other debris can lead to corrosion of the c...