Synthesis and oxidation resistance of different Ti3SiC2–TiC composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F24%3A00616678" target="_blank" >RIV/61389021:_____/24:00616678 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43510/24:43925063

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884224016304?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884224016304?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2024.04.232" target="_blank" >10.1016/j.ceramint.2024.04.232</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and oxidation resistance of different Ti3SiC2–TiC composites

Popis výsledku v původním jazyce

Preparation of Ti3SiC2–TiC composite from TiC, SiC, and Ti was performed using Spark Plasma Sintering (SPS). Initial powders were mixed using a planetary ball mill for 2 h with 90 RPM. The number of milling media was varied to obtain the best homogeneity of the samples between 70 and 250. SPS was performed at 1450, 1550, and 1600 °C in Ar and vacuum. By decreasing the amount of TiC in the initial mixture unreacted Ti5Si3 appeared in the final composition. Samples were subjected to 10 h oxidation tests at 900, 1000, and 1100 °C using thermogravimetry. The ideal sintering regime (highest oxidation resistance) was found to be 1550 °C with 10 min dwell time in Ar atmosphere. Oxidation kinetics of the prepared compacts was found to be following the parabolic law. The lowest overall oxidation rate was observed for the samples with the highest (above 87 wt%) Ti3SiC2 content. On the other hand, sample with Al addition was the most prone to oxidation. The phase composition of the samples played a higher role in their oxidation behaviour than their porosities.

Název v anglickém jazyce

Synthesis and oxidation resistance of different Ti3SiC2–TiC composites

Popis výsledku anglicky

Preparation of Ti3SiC2–TiC composite from TiC, SiC, and Ti was performed using Spark Plasma Sintering (SPS). Initial powders were mixed using a planetary ball mill for 2 h with 90 RPM. The number of milling media was varied to obtain the best homogeneity of the samples between 70 and 250. SPS was performed at 1450, 1550, and 1600 °C in Ar and vacuum. By decreasing the amount of TiC in the initial mixture unreacted Ti5Si3 appeared in the final composition. Samples were subjected to 10 h oxidation tests at 900, 1000, and 1100 °C using thermogravimetry. The ideal sintering regime (highest oxidation resistance) was found to be 1550 °C with 10 min dwell time in Ar atmosphere. Oxidation kinetics of the prepared compacts was found to be following the parabolic law. The lowest overall oxidation rate was observed for the samples with the highest (above 87 wt%) Ti3SiC2 content. On the other hand, sample with Al addition was the most prone to oxidation. The phase composition of the samples played a higher role in their oxidation behaviour than their porosities.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2024

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

1873-3956

Svazek periodika

50

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

25052-25059

Kód UT WoS článku

001336361500001

EID výsledku v databázi Scopus

2-s2.0-85190736394