The effect of room temperature and high temperature exposure on the elastic modulus, hardness and fracture toughness of glass ceramic sealants for solid oxide fuel cells

Autor:	Yilin Zhao, Jürgen Malzbender, S. M. Gross
Rok vydání:	2011
Předmět:	Materials science Glass-ceramic Annealing (metallurgy) Oxide law.invention chemistry.chemical_compound Fracture toughness chemistry law visual_art Indentation Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Solid oxide fuel cell Ceramic Composite material Elastic modulus
Zdroj:	Journal of the European Ceramic Society. 31:541-548
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2010.10.032
Popis:	The reliable operation of solid oxide fuel cell stacks (SOFCs) depends strongly on the structural integrity of the sealing material. Indentation testing is used to determine the mechanical properties of glass-ceramic sealants typically used for solid oxide fuel cell stacks, in particular for the evaluation of elastic modulus, hardness and fracture toughness. Different sealing materials partly with reinforcement by metallic or ceramic filler (particles or short fibers) are tested. The materials are tested after the joining procedure and after additional annealing at operation temperatures to test the effect of further crystallization that might take place. Furthermore, the effect of environmentally enhanced slow crack growth at low temperatures in water saturated atmosphere is investigated. Finally, self-healing effects of the glass ceramic materials with and without pre-annealing at typical operation temperatures are considered.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::acf3f91861572c44ae949fe8703694a9 https://doi.org/10.1016/j.jeurceramsoc.2010.10.032 Zobrazit plný text záznamu Full Text from ScienceDirect