Wetting and brazing of (HfTaZrNbTi)B2 and (HfTaZrNbTi)C High-Entropy Ceramics by AgCuTi filler

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00635700" target="_blank" >RIV/68081723:_____/25:00635700 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666539525000598?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666539525000598?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.oceram.2025.100792" target="_blank" >10.1016/j.oceram.2025.100792</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wetting and brazing of (HfTaZrNbTi)B2 and (HfTaZrNbTi)C High-Entropy Ceramics by AgCuTi filler

Popis výsledku v původním jazyce

The wetting behaviour of (HfTaZrNbTi)B-2 high entropy boride (HEB) and (HfTaZrNbTi)C high-entropy carbide (HEC) with molten Cu and AgCuTi alloy was investigated via the sessile drop method under an Ar/H-2 atmosphere. Pure Cu exhibited non-reactive wetting with contact angles similar to 120 degrees on HEB and similar to 126 degrees on HEC. In contrast, AgCuTi alloy showed strong reactive wetting (contact angle <= 17 degrees), primarily driven by reactive Ti. The reaction layer was notably thicker for the HEC/AgCuTi system. Due to the better wetting behaviour and high-temperature interactions with the ceramic substrates, AgCuTi alloy was employed as a filler to braze HEB and HEC using pressure-less Field Assisted Sintering Technique (FAST). The resulting joints demonstrated high apparent shear strength of 176 +/- 39 MPa for HEC and 116 +/- 38 MPa for HEB, exceeding the strength of the base materials in both cases.

Název v anglickém jazyce

Wetting and brazing of (HfTaZrNbTi)B2 and (HfTaZrNbTi)C High-Entropy Ceramics by AgCuTi filler

Popis výsledku anglicky

The wetting behaviour of (HfTaZrNbTi)B-2 high entropy boride (HEB) and (HfTaZrNbTi)C high-entropy carbide (HEC) with molten Cu and AgCuTi alloy was investigated via the sessile drop method under an Ar/H-2 atmosphere. Pure Cu exhibited non-reactive wetting with contact angles similar to 120 degrees on HEB and similar to 126 degrees on HEC. In contrast, AgCuTi alloy showed strong reactive wetting (contact angle <= 17 degrees), primarily driven by reactive Ti. The reaction layer was notably thicker for the HEC/AgCuTi system. Due to the better wetting behaviour and high-temperature interactions with the ceramic substrates, AgCuTi alloy was employed as a filler to braze HEB and HEC using pressure-less Field Assisted Sintering Technique (FAST). The resulting joints demonstrated high apparent shear strength of 176 +/- 39 MPa for HEC and 116 +/- 38 MPa for HEB, exceeding the strength of the base materials in both cases.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

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

Open Ceramics

ISSN

2666-5395

e-ISSN

—

Svazek periodika

22

Číslo periodika v rámci svazku

JUN

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

100792

Kód UT WoS článku

001489364400001

EID výsledku v databázi Scopus

2-s2.0-105004230607