3D EBSD Based Effective Thermoelastic Properties and Fracture of Silicon Nitride

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00435047" target="_blank" >RIV/68081723:_____/14:00435047 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

3D EBSD Based Effective Thermoelastic Properties and Fracture of Silicon Nitride

Popis výsledku v původním jazyce

Due to the combination of its excellent thermomechanical properties such as high stiffness, strength, toughness and thermal shock resistance, silicon nitride ceramics are prime structural materials for several challenging assignments and applications such as bearings, cutting tools. Silicon nitride consists of two phases: beta-Si3N4 grains (approximately 90 vol. %) and the glassy phase formed by the sintering additives. For a better understanding of the effective theromechanical behavior of silicon nitride ceramics, it is necessary to correlate microstructural and micromechanical properties. Based on finite element simulations of the unit cell (Wippler et al. 2011), using 3D EBSD data of silicon nitride as well as atomistic simulations of the temperature dependence of the elastic proprieties of the local phases, the effective thermoelastic properties are computed and compared to experimental results (Lube and Dusza, 2007). The stress distribution, within the local phases, is determined

Název v anglickém jazyce

3D EBSD Based Effective Thermoelastic Properties and Fracture of Silicon Nitride

Popis výsledku anglicky

Due to the combination of its excellent thermomechanical properties such as high stiffness, strength, toughness and thermal shock resistance, silicon nitride ceramics are prime structural materials for several challenging assignments and applications such as bearings, cutting tools. Silicon nitride consists of two phases: beta-Si3N4 grains (approximately 90 vol. %) and the glassy phase formed by the sintering additives. For a better understanding of the effective theromechanical behavior of silicon nitride ceramics, it is necessary to correlate microstructural and micromechanical properties. Based on finite element simulations of the unit cell (Wippler et al. 2011), using 3D EBSD data of silicon nitride as well as atomistic simulations of the temperature dependence of the elastic proprieties of the local phases, the effective thermoelastic properties are computed and compared to experimental results (Lube and Dusza, 2007). The stress distribution, within the local phases, is determined

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů