Number of the records: 1
Elastic and anelastic behavior of TBCs sprayed at high-deposition rates
- 1.
SYSNO ASEP 0456064 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Elastic and anelastic behavior of TBCs sprayed at high-deposition rates Author(s) Valarezo, A. (US)
Dwivedi, G. (US)
Sampath, S. (US)
Mušálek, Radek (UFP-V) RID, ORCID
Matějíček, Jiří (UFP-V) RID, ORCIDSource Title Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 24, 1-2 (2015), s. 160-167Number of pages 8 s. Publication form Print - P Language eng - English Country US - United States Keywords dense vertically cracked coating ; elastic modulus ; in-situ monitoring ; mechanical properties ; quenching stress ; thermal barrier coatings (TBCs) ; triplex system Subject RIV JK - Corrosion ; Surface Treatment of Materials R&D Projects ME 901 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GPP108/12/P552 GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 UT WOS 000347416800020 EID SCOPUS 84925496137 DOI 10.1007/s11666-014-0154-6 Annotation Coatings sprayed at high-deposition rates often result in stiff, dense, and highly stressed coatings. The high deposition temperature at which the coatings are formed is responsible for these characteristics. In this paper, TBCs were sprayed at high-deposition rates, increasing the tensile quenching stresses beyond the threshold of crack opening during spraying. Dense structures were observed within a pass, in the presence of micro and macro defects specifically horizontal cracks within interpasses and vertical segmentation cracks. Mechanical properties, mainly the elastic and anelastic behavior of TBCs were significantly affected by the strain accommodation and friction occurring within intersplats and interpass interfaces. The strain tolerance obtained in as-sprayed conditions decreased as the microstructure and defects sintered during high-temperature heat cycles. The non-linearity degree decreased while the elastic modulus of the various coatings increased to a maximum value. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2016
Number of the records: 1