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Multilayered suspension plasma sprayed thermal barrier coatings for high temperature gas turbine applications
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (PTW)ORCID-id: 0000-0002-4201-668X
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (PTW)ORCID-id: 0000-0002-9578-4076
Oerlikon Metco, Westbury, USA.
Oerlikon Metco, Westbury, USA.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Proceedings of the International Thermal Spray Conference & Exposition (ITSC 2017), New York: Curran Associates, Inc , 2017, s. 382-387Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Improvement in the performance of thermal barrier coating systems (TBCs) is one of the key objectives for further development of gas turbine applications. The material most commonly used as TBC topcoat is yttria stabilised zirconia (YSZ). However, the usage of YSZ is limited by the operating temperature range which in turn restricts the engine efficiency. Materials such as pyrochlores, perovskites, rare earth garnets, etc. are suitable candidates which could replace YSZ as they exhibit lower thermal conductivity and higher phase stability at elevated temperatures.The objective of this work was to investigate different multi-layered TBCs consisting of advanced topcoat materials fabricated by Suspension Plasma Spraying (SPS). The investigated topcoat materials were YSZ, dysprosia stabilised zirconia, gadolinium zirconiate, cerium doped YSZ and yttria fully stabilised zirconia. All topcoats were deposited with TriplexPro-210 plasma spray gun and radial injection of suspension. Lifetime of these samples was examined by thermal cyclic fatigue and thermal shock testing. Microstructure analysis of as-sprayed and failed specimens was performed with scanning electron microscope. The failure mechanisms in each case have been discussed in this article. The results show that SPS could be a promising route to produce multilayered TBCs for high temperature applications.

sted, utgiver, år, opplag, sider
New York: Curran Associates, Inc , 2017. s. 382-387
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik; Produktionsteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-11940Scopus ID: 2-s2.0-85047567701ISBN: 9781510858220 (tryckt)OAI: oai:DiVA.org:hv-11940DiVA, id: diva2:1167970
Konferanse
International Thermal Spray Conference and Exposition, ITSC 2017, Dusseldorf, Germany, 7-9 June, 2017
Merknad

ISTC 2017 International Thermal Spray Conference & Exposition : abstracts (including proceedings on USB stick)

Tilgjengelig fra: 2017-12-19 Laget: 2017-12-19 Sist oppdatert: 2019-01-10bibliografisk kontrollert

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Gupta, Mohit KumarMarkocsan, Nicolaie

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Totalt: 149 treff
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