The effect of feedstock powder and spray distance on sliding wear and cavitation erosion of HVOF cermet coatings deposited on AZ31
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Jonda Ewa, Łatka Leszek, Szala Mirosław, Walczak Mariusz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 515 |
| Numer artykułu: | 132599 |
| Strony: | 1 - 12 |
| Impact Factor: | 6,1 |
| Web of Science® Times Cited: | 2 |
| Scopus® Cytowania: | 2 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The authors gratefully acknowledge Dr. Hanna Myalska-Głowacka from Silesian University of Technology in Katowice for help in SEM images. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| The paper discusses the influence of the feedstock powder type as well as the spray distance on microstructure, phase composition and particularly sliding wear resistance and cavitation erosion performance of the manufactured coatings. Feedstock powders were cermet ones: WC-12Co (C1), WC-10Co-4Cr (C2) and WC-20Cr3C2-7Ni (C3). All coatings were deposited by high velocity oxy-fuel method (HVOF) with two different spray distances: 320 mm (SD1) and 400 mm (SD3). The study's main aim was to investigate the effect of spray parameters and feedstock type on sliding wear and cavitation erosion resistance. The spray parameters determine the microstructure and mechanical properties, affecting the operational behaviour of coatings. Observed microstructure was typical for HVOF deposits, exhibits dense coatings structure with low porosity level (below 3 vol%). Sliding results indicate that alumina counterball results in abrasive grooving, fatigue and tribochemical wear modes revealed by SEM method. Samples show wear rates at a comparative level (in the range between 2 and 3·10−7 mm3/N·m), although the spray distance affects the tribological performance of the coatings. For C1-SD1 the wear rate was equal to 5.6·10−7 mm3/N·m, whereas for C1-SD3 it was equal to 2.1·10−7 mm3/N·m. The erosive material loss was higher for shorter spray distances in case of WC-12Co (61.70 μm for 320 mm and 53.13 μm for 400 mm) as well as for WC-10Co-4Cr (65.53 μm for 320 mm and 35.68 μm for 400 mm) materials. For WC-20Cr3C2-7Ni the inverse relationship was observed (42.28 μm for 320 mm and 48.87 μm for 400 mm). The erosion wear mechanism is based on fatigue-induced material detachment proceeding in pit growth and layer-like coatings material detachment. The comparison of the cavitation erosion resistance with sliding wear results shows no clear correlation between tribological and erosive behaviour of the coatings. On the other hand, spraying parameters have a lower effect on tested cermets tribological performance than for cavitation erosion. |
