Number of the records: 1
The High-Temperature Wear and Oxidation Behavior of CrC-Based HVOF Coatings
- 1.
SYSNO ASEP 0508699 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The High-Temperature Wear and Oxidation Behavior of CrC-Based HVOF Coatings Author(s) Houdková, Š. (CZ)
Česánek, Z. (CZ)
Smazalová, E. (CZ)
Lukáč, František (UFP-V) ORCIDNumber of authors 4 Source Title Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 27, č. 1-2 (2018), s. 179-195Number of pages 17 s. Language eng - English Country US - United States Keywords thermal spray coatings ; hot corrosion behavior ; cr3c2-nicr coatings ; carbide development ; hard chromium ; erosion ; microstructure ; parameters ; ceramic matrix composite ; high-temperature oxidation ; high-temperature wear ; hp/hvof ; power plant Subject RIV JK - Corrosion ; Surface Treatment of Materials OECD category Materials engineering Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000419001600017 EID SCOPUS 85029431754 DOI 10.1007/s11666-017-0637-3 Annotation Three commercially available chromium carbide-based powders with different kinds of matrix (Cr3C2-25%NiCr, Cr3C2-25%CoNiCrAlY and Cr3C2-50%NiCrMoNb) were deposited by an HVOF JP-5000 spraying gun, evaluated and compared. The influence of heat treatment on the microstructure and properties, as well as the oxidation resistance in a hot steam environment (p = 24 MPa, T = 609 A degrees C), was evaluated by SEM and XRD with respect to their potential application in the steam power industry. The sliding wear resistance measured at room and elevated (T = 600 A degrees C) temperatures according to ASTM G-133. For all three kinds of chromium carbide-based coatings, the precipitation of secondary carbides from the supersaturated matrix was observed during the heat treatment. For Cr3C2-25%NiCr coating annealed in hot steam environment as well as for Cr3C2-25%CoNiCrAlY coating in both environments, the inner carbide oxidation was recorded. The sliding wear resistance was found equal at room temperature, regardless of the matrix composition and content, while at elevated temperatures, the higher wear was measured, varying in dependence on the matrix composition and content. The chromium carbide-based coating with modified matrix composition Cr3C2-50%NiCrMoNb is suitable to replace the Cr3C2-25%NiCr coating in a hot steam environment to eliminate the risk of failure caused by inner carbide oxidation. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020 Electronic address https://link.springer.com/article/10.1007%2Fs11666-017-0637-3
Number of the records: 1