Thermal shock resistance of Si3N4 and Si3N4?SiC ceramics with rare-earth oxide sintering additives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F14%3A%230006376" target="_blank" >RIV/46747885:24210/14:#0006376 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0955221914002374/pdfft?md5=e79f3236f75a6e8a62e6155a51df8813&pid=1-s2.0-S0955221914002374-main.pdf" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0955221914002374/pdfft?md5=e79f3236f75a6e8a62e6155a51df8813&pid=1-s2.0-S0955221914002374-main.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2014.04.034" target="_blank" >10.1016/j.jeurceramsoc.2014.04.034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal shock resistance of Si3N4 and Si3N4?SiC ceramics with rare-earth oxide sintering additives

Popis výsledku v původním jazyce

The influence of various rare-earth oxide additives and the addition of SiC nanoparticles on the thermal shock resistance of the Si3N4 based materials was investigated. The location of SiC particles inside the Si3N4 grains contributed to a higher level of residual stresses, which caused a failure at the lower temperature difference compared to the composites with a preferential location of the SiC at the grain boundaries. A critical temperature difference increased with an increasing ionic radius of RE3+ for both the composites and the monoliths. The critical temperature difference for the composite (580 °C) and the monolith (680 °C) sintered with La2O3 was significantly higher compared to the composite and the monolith doped with Lu2O3 (430 °C). A good agreement was found between the results of the critical temperature difference estimated by the indentation quench test and that obtained by the strength retention method.

Název v anglickém jazyce

Thermal shock resistance of Si3N4 and Si3N4?SiC ceramics with rare-earth oxide sintering additives

Popis výsledku anglicky

The influence of various rare-earth oxide additives and the addition of SiC nanoparticles on the thermal shock resistance of the Si3N4 based materials was investigated. The location of SiC particles inside the Si3N4 grains contributed to a higher level of residual stresses, which caused a failure at the lower temperature difference compared to the composites with a preferential location of the SiC at the grain boundaries. A critical temperature difference increased with an increasing ionic radius of RE3+ for both the composites and the monoliths. The critical temperature difference for the composite (580 °C) and the monolith (680 °C) sintered with La2O3 was significantly higher compared to the composite and the monolith doped with Lu2O3 (430 °C). A good agreement was found between the results of the critical temperature difference estimated by the indentation quench test and that obtained by the strength retention method.

Druh

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

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

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

Název periodika

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

ISSN

0955-2219

e-ISSN

—

Svazek periodika

34

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

3301-3308

Kód UT WoS článku

000340222800008

EID výsledku v databázi Scopus

—