Preparation of High-Entropy (Ti, Zr, Hf, Ta, Nb) Carbide Powder via Solution Chemistry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F21%3A00543335" target="_blank" >RIV/61388980:_____/21:00543335 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/21:00543335 RIV/61389021:_____/21:00543335 RIV/00216208:11310/21:10429229

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acs.inorgchem.1c00776" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.inorgchem.1c00776</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.inorgchem.1c00776" target="_blank" >10.1021/acs.inorgchem.1c00776</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of High-Entropy (Ti, Zr, Hf, Ta, Nb) Carbide Powder via Solution Chemistry

Popis výsledku v původním jazyce

High-entropy ceramics is a new class of materials having a great potential and wide application. The carbide of Ti, Zr, Hf, Ta, Nb is a typical member of this group. It has been synthesized mostly through blending, milling, and high-temperature solid-state reaction of metal carbide precursors for each metal. This route needs extremely high temperature (2300 °C), which makes it energy and technology demanding. We have developed a chemical route for high-entropy carbide powder that needs a synthetic temperature that is several hundred degrees Celsius lower. A solution of desired metal citrates with an excess of citric acid was converted into a metal oxide/active carbon nanocomposite. Starting from a solution enabled ideal mixing of precursors on a molecular level, allowing us to skip any milling and blending steps. The nanocomposite was treated in vacuum at 1600 °C, giving a phase-pure high-entropy carbide. The intermediate compounds and products were characterized by means of solid-state analysis.

Název v anglickém jazyce

Preparation of High-Entropy (Ti, Zr, Hf, Ta, Nb) Carbide Powder via Solution Chemistry

Popis výsledku anglicky

High-entropy ceramics is a new class of materials having a great potential and wide application. The carbide of Ti, Zr, Hf, Ta, Nb is a typical member of this group. It has been synthesized mostly through blending, milling, and high-temperature solid-state reaction of metal carbide precursors for each metal. This route needs extremely high temperature (2300 °C), which makes it energy and technology demanding. We have developed a chemical route for high-entropy carbide powder that needs a synthetic temperature that is several hundred degrees Celsius lower. A solution of desired metal citrates with an excess of citric acid was converted into a metal oxide/active carbon nanocomposite. Starting from a solution enabled ideal mixing of precursors on a molecular level, allowing us to skip any milling and blending steps. The nanocomposite was treated in vacuum at 1600 °C, giving a phase-pure high-entropy carbide. The intermediate compounds and products were characterized by means of solid-state analysis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LM2018124" target="_blank" >LM2018124: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Inorganic Chemistry

ISSN

0020-1669

e-ISSN

1520-510X

Svazek periodika

60

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

7617-7621

Kód UT WoS článku

000661306200005

EID výsledku v databázi Scopus

2-s2.0-85107902910