Structural characterization and selected properties of newly-developed Al-Cr-Pd and Al-Fe-Pd alloys with structurally complex intermetallics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932099" target="_blank" >RIV/60461373:22310/25:43932099 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/25:43932099

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838825017359" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838825017359</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2025.180177" target="_blank" >10.1016/j.jallcom.2025.180177</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural characterization and selected properties of newly-developed Al-Cr-Pd and Al-Fe-Pd alloys with structurally complex intermetallics

Popis výsledku v původním jazyce

In this work, the structure and selected properties of newly developed Al-Cr-Pd (72 at% of Al, 24 at% of Cr, 4 at% of Pd) and Al-Fe-Pd (72 at% of Al, 24 at% of Fe, 4 at% of Pd) alloys in the form of ingots were characterized. The structure of the alloys was described on X-ray diffraction, transmission electron microscopy, and scanning electron microscopy studies. The Al-Cr-Pd and Al-Fe-Pd alloys were examined for thermal properties (differential thermal analysis), corrosion resistance (electrochemical and scanning Kelvin probe force microscopy studies), and mechanical properties (Vickers hardness and wear resistance). Both alloys were characterized by a multiphase structure with the structurally complex intermetallics. The presence of decagonal electron diffraction (DAlPdCr) for the Al-Cr-Pd alloy was confirmed by transmission electron microscopy. The Al-Cr-Pd alloy showed a higher tendency to passivate than the Al-Fe-Pd alloy in the 3.5 % NaCl solution environment. However, the oxide layer on Al-Cr-Pd was discontinuous and less protective against further corrosion progression, as indicated by the higher corrosion current density for this alloy. For both alloys, a high contrast of Volta potentials was identified between the phases with and without palladium, which may favour the formation of galvanic microcells. The AlFe-Pd alloy showed a higher average hardness and a greater resistance to wear than the Al-Cr-Pd alloy.

Název v anglickém jazyce

Structural characterization and selected properties of newly-developed Al-Cr-Pd and Al-Fe-Pd alloys with structurally complex intermetallics

Popis výsledku anglicky

In this work, the structure and selected properties of newly developed Al-Cr-Pd (72 at% of Al, 24 at% of Cr, 4 at% of Pd) and Al-Fe-Pd (72 at% of Al, 24 at% of Fe, 4 at% of Pd) alloys in the form of ingots were characterized. The structure of the alloys was described on X-ray diffraction, transmission electron microscopy, and scanning electron microscopy studies. The Al-Cr-Pd and Al-Fe-Pd alloys were examined for thermal properties (differential thermal analysis), corrosion resistance (electrochemical and scanning Kelvin probe force microscopy studies), and mechanical properties (Vickers hardness and wear resistance). Both alloys were characterized by a multiphase structure with the structurally complex intermetallics. The presence of decagonal electron diffraction (DAlPdCr) for the Al-Cr-Pd alloy was confirmed by transmission electron microscopy. The Al-Cr-Pd alloy showed a higher tendency to passivate than the Al-Fe-Pd alloy in the 3.5 % NaCl solution environment. However, the oxide layer on Al-Cr-Pd was discontinuous and less protective against further corrosion progression, as indicated by the higher corrosion current density for this alloy. For both alloys, a high contrast of Volta potentials was identified between the phases with and without palladium, which may favour the formation of galvanic microcells. The AlFe-Pd alloy showed a higher average hardness and a greater resistance to wear than the Al-Cr-Pd alloy.

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

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

1024

Číslo periodika v rámci svazku

1024

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

nestránkováno

Kód UT WoS článku

001467373500001

EID výsledku v databázi Scopus

2-s2.0-105001932562