2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 8. Composite, Ceramic, Nanomaterials and Mathematics
| Editors: | F. Kongoli, M. de Campos |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 184 pages |
| ISBN: | 978-1-987820-96-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Aviation Coatings for Volcanic Environments
Pawel Rokicki1; Marek Goral1; Andrzej Nowotnik2;1RZESZOW UNIVERSITY OF TECHNOLOGY, RESEARCH AND DEVELOPMENT LABORATORY FOR AEROSPACE MATERIALS, Rzeszow, Poland; 2RZESZOW UNIVERSITY OF TECHNOLOGY, Rzeszow, Poland;
Type of Paper: Plenary
Id Paper: 107
Topic: 18
Abstract:
Environments that contain volcanic ashes can lead to serious damage of static and rotating elements of the jet engine. The mechanism standing behind the issue are complex, and concern not only erosion processes but also chemical interactions in elevated temperature reaching up to 1500°C [1]. Volcanic ash melts inside the engine, and in such a form hits the surface of the blade/vane. Nowadays, the most commonly used thermal and environmental barrier coatings (TBC/EBC) for turbine blades is yttrium stabilized zirconia dioxide (YSZ) [2,3]. It is a part of a whole coating consisting of two interacting layers, namely bond coat and top coat. The main role of the bond coat is to provide proper adhesion to sustain all the other surface parameters responsible for the efficiency of the whole blade. As the YSZ is characterized by proper thermal properties, it does not provide sufficient chemical resistance to the volcanic ash environment [3,4]. Thus, the research presented in the paper aims to develop a technology for manufacturing a coating that would be resistant to not only erosion, but also to chemical meaning in complex environments. This paper presents a step-by-step technology of EB-PVD, thermal, and plasma spraying processes leading to the manufacture of environmental barrier coatings based on YSZ and gadolinium zirconate (GZO). The coating obtained in the research were analysed by means of optical and electron microscopy, which allows a full description of their structure.
Keywords:
Blades; Coatings; Corrosion; Environment; HighTemperature; Surface; Technology;References:
[1] Goral M., Kotowski S., Nowotnik A., Pytel M., Drajewicz M., Sieniawski J. 2013. Surface and Coatings Technology Volume 237, 51-55[2] Goral M., Kubaszek T. 2017. Advances in Manufacturing Science and Technology, Vol 41. No 2. 63-72
[3] Goral M. 2016. Materials Science Forum Vol. 844, 193-196
[4] Steinberg L., Naraparaju R., Heckert M., Mikulla C., Schulz U., Leyens C. 2018. Journal of the European Ceramic Society, Vol 38, Issue 15, 5101-5112
[5] Arunkumar, P., Aarthi, U., Sribalaji, M., Mukherjee, B., Keshri, A. K., Tanveer, W. H., Babu, K. S. 2018. Journal of Alloys and Compounds, Vol. 765, 418-427
[6] Swadzba R. 2018. Applied Surface Science, Vol 445, 133-144
[7] Dudziak, T. Medvedovski E., Homa M. 2018. Journal of Materials Engineering and Performance Vol. 27, Issue 8, 4317-4335
[8] Drexler J. M., Gledhill A. D., Shinoda K., Vasiliev A. L., Reddy, K. M. Sampath S., Padture N. P. 2011. Advanced Materials Volume 23, Issue 21, 2387-2496.
[9] Mechnich P., Braue W. 2013 Journal of the American Ceramic Society. Vol 96, Issue 1958-1965.
[10] R.W. Fawley, Superalloys (1972) 3-29.