Thermal treatment effects on the microstructure and mechanical response of Hi-Nicalon SiC fibers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F25%3A10260279" target="_blank" >RIV/61989100:27640/25:10260279 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S027288422504492X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S027288422504492X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2025.09.185" target="_blank" >10.1016/j.ceramint.2025.09.185</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal treatment effects on the microstructure and mechanical response of Hi-Nicalon SiC fibers

Popis výsledku v původním jazyce

This study focuses on the gates the mechanical behaviour of silicon carbide (SiC) fibres previously subjected to heat treatment temperature (HTT) between 1000 and 1500 °C. Nanoindentation techniques were employed to assess local mechanical properties, including hardness and elastic modulus, while scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to investigate microstructural changes. The results reveal a significant reduction in hardness and elastic modulus with increasing HTT, attributed to phase transformations and microstructural changes. A non-uniform degradation pattern was observed, with the fibre core deteriorating more rapidly than the skin.These findings offer key insights into the thermomechanical stability of SiC fibres, crucial for enhancing their performance in demanding environments, especially in aerospace applications. Understanding their degradation mechanisms aids in optimizing their mechanical and thermal properties.

Název v anglickém jazyce

Thermal treatment effects on the microstructure and mechanical response of Hi-Nicalon SiC fibers

Popis výsledku anglicky

This study focuses on the gates the mechanical behaviour of silicon carbide (SiC) fibres previously subjected to heat treatment temperature (HTT) between 1000 and 1500 °C. Nanoindentation techniques were employed to assess local mechanical properties, including hardness and elastic modulus, while scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to investigate microstructural changes. The results reveal a significant reduction in hardness and elastic modulus with increasing HTT, attributed to phase transformations and microstructural changes. A non-uniform degradation pattern was observed, with the fibre core deteriorating more rapidly than the skin.These findings offer key insights into the thermomechanical stability of SiC fibres, crucial for enhancing their performance in demanding environments, especially in aerospace applications. Understanding their degradation mechanisms aids in optimizing their mechanical and thermal properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

—

Svazek periodika

51

Číslo periodika v rámci svazku

27

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

54556-54571

Kód UT WoS článku

001607936100008

EID výsledku v databázi Scopus

2-s2.0-105021050492