Microstructure, Oxidation Resistance and High-Temperature Tribological Properties of CoCrWReAl-xRu-TiC Eutectic Alloys
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Yurchuk Alina, Tisov Oleksandr, Kindrachuk Myroslav, Paszeczko Mychajło, Cherepova Tetiana |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 21 |
| Wolumen/Tom: | 19 |
| Numer artykułu: | 4684 |
| Strony: | 1 - 31 |
| Impact Factor: | 3,7 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | This work was funded by Xi’an Jiaotong University (project №: 11304223010101). |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 3 listopada 2026 |
| Abstrakty: | angielski |
| CoCrWReAl-xRu-TiC eutectic alloys (x = 0, 1, 2.5, and 5 wt.%) were fabricated in a tung- sten arc furnace under a protective argon atmosphere using pure metals and amorphous graphite. We examined the phase composition and microstructure of the samples and tri- boinduced layers using SEM-EDS and XRD. DSC was used to determine their melting temperature. The oxidation resistance tests were performed using a thermogravimetric analyzer under isothermal conditions at 1100 °C for 100 h. Oxidation damage was esti- mated from weight-gain graphs, oxide layer thickness, the relative area of internally oxi- dized material, and exterior visual analysis. Wear resistance was tested at 1100 °C under dry ball-on-disc sliding conditions for 2 h against a 10 mm Si3N4 ceramic ball at a normal load of 100 N. Increasing Ru content initially refines the carbide structure and makes their distribution in the cobalt matrix more uniform, increasing alloy hardness and wear re- sistance. At higher concentrations, carbide morphology changes from fine particulate to coarse split-dendritic, increasing their microhardness and intensifying abrasive wear. The oxidation resistance decreases with increasing Ru weight fraction. The 1 wt.% Ru alloy provided the most favorable balance of melting temperature, oxidation resistance, me- chanical, and tribological properties. |
