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In-situ Observation of Ongoing Microstructural Changes in Functionally Graded Thermal Spray Coating during Mechanical Loading
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SYSNO ASEP 0445281 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title In-situ Observation of Ongoing Microstructural Changes in Functionally Graded Thermal Spray Coating during Mechanical Loading Author(s) Mušálek, Radek (UFP-V) RID, ORCID
Vilémová, Monika (UFP-V) RID, ORCID
Matějíček, Jiří (UFP-V) RID, ORCID
Taltavull, C. (ES)
Lopez Galisteo, A.J. (ES)Source Title Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies. - India : Valardocs, 2015 / Sudarshan T.S. ; Vuoristo P. ; Koivuluoto H. - ISBN 978-81-926196-1-3 Pages s. 571-578 Number of pages 9 s. Publication form Print - P Action International Conference on Surface Modification Technologies/28./ Event date 16.06.2014-18.06.2014 VEvent location Tampere Country FI - Finland Event type WRD Language eng - English Country IN - India Keywords thermal spray coating ; fracture ; failure process ; in-situ observation ; functionally graded materials Subject RIV JK - Corrosion ; Surface Treatment of Materials R&D Projects GPP108/12/P552 GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 Annotation Fine lamellar microstructure of thermal spray coatings results in their unique properties when compared to conventional materials,e.g. enhanced strain tolerance of the plasma sprayed ceramics when compared to their bulk counterparts.However,detectable changes in the coating microstructure take place already since very low strains.Understanding of the microstructural changes in the coatings is commonly based on the macroscopic stress-strain evaluation e.g. from the four-point bending test or fractographic analysis of failed samples. Some of the advanced techniques such as tomography are not commonly available and their resolution may be insufficient,as small microcracks have a crucial role in the coating properties and failure mechanisms.In this study, advantages of relatively simple direct in-situ microstructural observation of polished crosssections of thermal spray coatings during mechanical loading by means of scanning electron microscopy and subsequent strain-mapping analysis are Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2016
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