Get In Touch Group Our Company Why Partner with us Our Services News & Resources Contacts Scientific Papers / More than 70 papers published Search and development activities – and results in surface treatment, aluminizing, oxydation, thermal spray and so on – have been included in more than 70 papers published at international conferences and technical congresses. Read the papers of: 2020 Journal of the European Ceramic Society Volume 40, Issue 12, September 2020, Pages 4084-4100 Original Article CMAS corrosion of YSZ thermal barrier coatings obtained by different thermal spray processes Author links open overlay panel: Stefania Morellia Veronica Testaa Giovanni Bolelliabc Omar Ligabued Eleonora Molinarid Nelso Antolottid Luca Lusvarghiabc Abstract Degradation of yttria-stabilized zirconia (YSZ) layers by molten CaO-MgO-Al2O3-SiO2 (CMAS)-based deposits is an important failure mode of thermal barrier coating (TBC) systems in modern gas turbines. The present work aimed to understand how the chemical purity and microstructure of plasma-sprayed YSZ layers affect their response to CMAS corrosion. To this end, isothermal corrosion tests (1 h at 1250 °C) were performed on four different kinds of YSZ coatings: atmospheric plasma-sprayed (APS) layers obtained from standard- and high-purity feedstock powders, a dense – vertically cracked (DVC) layer, and a suspension plasma sprayed (SPS) one. Characterization of corroded and non-corroded samples by FEG-SEM, EBSD and micro-Raman spectroscopy techniques reveals that, whilst all YSZ samples suffered grain-boundary corrosion by molten CMAS, its extent could vary considerably. High chemical purity limits the extent of grain-boundary dissolution by molten CMAS, whereas high porosity and/or fine crystalline grain structure lead to more severe degradation. 2019 2018 2017 2016 2015 2014 2013 2011 2010 2009 2008 2007 Get in touch Contact Code of Ethics Model of organization, Management, and control Social WWW.LINCOTEKSURFACESOLUTIONS.COM – owned by Lincotek Rubbiano S.p.A. and used by Lincotek Rubbiano S.p.A. - Surface Solutions Division - Via Mistrali 7, 43046 Rubbiano di Solignano PR, Italy - Phone 39 0525 305811 – VAT number, Tax Code and Economic Administrative Index No.: : IT 02087600348 - Economic Administrative Index Nr PR - 2564 209992 - Capital € 7925778,00 PEC: surfacesolutions@pec.lincotek.it | privacy@lincotek.com | Privacy Policy Web | Privacy Policy Cookie | Rights of Data Subjects | Cookie Settings