Elastic Properties of Silicon Nitride Ceramics Reinforced with Graphene Nanofillers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00239156" target="_blank" >RIV/68407700:21340/15:00239156 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matdes.2015.08.044" target="_blank" >http://dx.doi.org/10.1016/j.matdes.2015.08.044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matdes.2015.08.044" target="_blank" >10.1016/j.matdes.2015.08.044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Elastic Properties of Silicon Nitride Ceramics Reinforced with Graphene Nanofillers

Popis výsledku v původním jazyce

Elastic constants of silicon nitride composites with variable content (3-18 wt.%) of two kinds of graphene fillers (nanoplatelets and reduced graphene oxide sheets) are determined using resonant ultrasound spectroscopy. The corresponding Young's modulus(E), shear modulus (G) and Poisson's ratio (v) are calculated for each material. Composites show a noticeable anisotropy that grows stronger with the graphene filler content, owing to the preferential alignment of the graphene layers and to their own anisotropy as well. E and G monotonically decrease with the filler concentration for both types of fillers, showing a maximum decrease in E of 75% along the direction perpendicular to the graphene plane for the composite with the highest filler content (Si3N4-18 wt.% GNP) and a reduction in G of 63% for shear along the graphene plane for the same composite. Influence on the fracture pattern of the composites is also addressed.

Název v anglickém jazyce

Elastic Properties of Silicon Nitride Ceramics Reinforced with Graphene Nanofillers

Popis výsledku anglicky

Elastic constants of silicon nitride composites with variable content (3-18 wt.%) of two kinds of graphene fillers (nanoplatelets and reduced graphene oxide sheets) are determined using resonant ultrasound spectroscopy. The corresponding Young's modulus(E), shear modulus (G) and Poisson's ratio (v) are calculated for each material. Composites show a noticeable anisotropy that grows stronger with the graphene filler content, owing to the preferential alignment of the graphene layers and to their own anisotropy as well. E and G monotonically decrease with the filler concentration for both types of fillers, showing a maximum decrease in E of 75% along the direction perpendicular to the graphene plane for the composite with the highest filler content (Si3N4-18 wt.% GNP) and a reduction in G of 63% for shear along the graphene plane for the same composite. Influence on the fracture pattern of the composites is also addressed.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/GB14-36566G" target="_blank" >GB14-36566G: Multidisciplinární výzkumné centrum moderních materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Materials and Design

ISSN

0261-3069

e-ISSN

—

Svazek periodika

87

Číslo periodika v rámci svazku

—

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

675-680

Kód UT WoS článku

000363816000078

EID výsledku v databázi Scopus

2-s2.0-84944683623