Tribologic behavior and surface integrity of NAB bronze coatings reinforced with WC and Cr3C2 carbides using ytterbium fiber laser
[ 1 ] Instytut Technologii Mechanicznej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] pracownik
2023
artykuł naukowy
angielski
- Laser alloying
- NAB bronze
- Ytterbium fiber laser
- WC and Cr3C2particulates
- Microhardness
- Friction and wear behavior
EN Nickel-aluminum bronzes (NAB) are widely used in different applications due to their high mechanical properties and operational characteristics. These properties can be further improved using different finishing processes. This paper’s objective involves the wear and surface integrity characterization of CuAl7Ni6P bronze coatings formed firstly by plasma spraying and then by laser alloying with WC and Cr3C2 carbides. The YLR-2000 fiber ytterbium laser was used for laser processing and the effect of process conditions, namely a laser spot speed (LSS) and a square of the laser spot (SLS)was studied under 500 N and 1000 N loads. It was revealed that processing parameters do not have a significant effect on microhardness and friction process factors, but have significant effect on carbide alloying results. Under load of 500 N wear rates have an advantage up to 5–6 times regardless of the processing parameters and the type of reinforcing particulates. Under load of 1000 N alloying advantage is very high: 15–20 times using Cr3C2, and even 30–50 times using WC compared with results obtained for plasma spraying. These results are very important when choosing NAB laser processing input parameters in industrial applications.
13.07.2023
108784-1 - 108784-13
Article Number: 108784
CC BY-NC-ND (uznanie autorstwa - użycie niekomercyjne - bez utworów zależnych)
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