This title appears in the Scientific Report : 2020 

High-velocity water vapor corrosion of Yb-silicate: Sprayed vs. sintered body
Bakan, Emine (Corresponding author)
Kindelmann, Moritz / Kunz, Willy / Klemm, Hagen / Vaßen, Robert
Werkstoffsynthese und Herstellungsverfahren; IEK-1
Scripta materialia, 178 (2020) S. 468 - 471
Amsterdam [u.a.] Elsevier Science 2020
10.1016/j.scriptamat.2019.12.019
Journal Article
Methods and Concepts for Material Development
Published on 2019-12-26. Available in OpenAccess from 2021-12-26.
Published on 2019-12-26. Available in OpenAccess from 2021-12-26.
Please use the identifier: http://hdl.handle.net/2128/23818 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.scriptamat.2019.12.019 in citations.
The water vapor corrosion of Yb-silicates is of interest to their application as environmental barrier coatings in gas turbine technology. In this study, densified samples from the Yb-silicate powder, as well as plasma-sprayed free-standing Yb-silicate coating were tested at a high-velocity steam rig (T = 1400 °C, v = 90 m/s, PH2O = 0.19 atm) for microstructural comparison. After the test, the measured weight losses of the coatings were larger than that of the densified sample. At the same time, the thicknesses of the corroded scales at the coating surfaces were found to be thicker than that of the sintered sample by a factor of two.