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Microstructure, fracture and damage mechanisms in rare-earth doped silicon nitride ceramics
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SYSNO ASEP 0370045 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microstructure, fracture and damage mechanisms in rare-earth doped silicon nitride ceramics Author(s) Tatarko, P. (SK)
Chlup, Zdeněk (UFM-A) RID, ORCID
Dusza, J. (SK)Number of authors 3 Source Title Key Engineering Materials - ISSN 1013-9826
Roč. 465, - (2011), s. 93-96Number of pages 4 s. Action MSMF-6: Materials Structure and Micromechanics of Fracture VI Event date 28.06.2010-30.06.2010 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CH - Switzerland Keywords rare-earth element ; silicon nitride ; composite ; fracture ; mechanical properties Subject RIV JL - Materials Fatigue, Friction Mechanics CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000291704700018 Annotation Influence of rare-earth oxide additives on the strength, fracture toughness and tribological behaviour of hot-pressed Si(3)N(4) and Si(3)N(4)/SiC micro/nano-composites has been investigated. Four-point bending mode and ball on disc methods have been used for strength and wear tests and Single-Edge V-Notched Beam, Chevron Notched Beam, Indentation Strength and Indentation Fracture techniques for fracture toughness measurement. Fractography has been used to characterize strength limiting defects, fracture micromechanisms and damage mechanisms during the wear test. The strength values were strongly influenced by the present processing flaws. Wear behavior is significantly influenced by the chemical composition and by the microstructure of the materials. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2012
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