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Thermal Conductivity Analysis and Lifetime Testing of Suspension Plasma-Sprayed Thermal Barrier Coatings
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för maskinteknik. (PTW)ORCID-id: 0000-0003-0209-1332
Progressive Surface, Grand Rapids, MI 49512, USA .
Progressive Surface, Grand Rapids, MI 49512, USA.
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för tillverkningsprocesser. (PTW)ORCID-id: 0000-0002-9578-4076
2014 (engelsk)Inngår i: Coatings, ISSN 2079-6412, Vol. 4, nr 3, s. 630-650Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Suspension plasma spraying (SPS) has become an interesting method for the production of thermal barrier coatings for gas turbine components. The development of the SPS process has led to structures with segmented vertical cracks or column-like structures that can imitate strain-tolerant air plasma spraying (APS) or electron beam physical vapor deposition (EB-PVD) coatings. Additionally, SPS coatings can have lower thermal conductivity than EB-PVD coatings, while also being easier to produce. The combination of similar or improved properties with a potential for lower production costs makes SPS of great interest to the gas turbine industry. This study compares a number of SPS thermal barrier coatings (TBCs) with vertical cracks or column-like structures with the reference of segmented APS coatings. The primary focus has been on lifetime testing of these new coating systems. Samples were tested in thermo-cyclic fatigue at temperatures of 1100 °C for 1 h cycles. Additional testing was performed to assess thermal shock performance and erosion resistance. Thermal conductivity was also assessed for samples in their as-sprayed state, and the microstructures were investigated using SEM

sted, utgiver, år, opplag, sider
2014. Vol. 4, nr 3, s. 630-650
Emneord [en]
thermal barrier coating; suspension plasma spray; thermal shock; thermo-cyclic fatigue; thermal conductivity
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik; Produktionsteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-6529DOI: 10.3390/coatings4030630OAI: oai:DiVA.org:hv-6529DiVA, id: diva2:739858
Tilgjengelig fra: 2014-08-22 Laget: 2014-08-22 Sist oppdatert: 2019-05-13bibliografisk kontrollert

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