| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Coatings and Surface Engineering for Environmental Protection
|
| Presentation Title |
Effect of Nickel Content on Mechanical Property and Corrosion Behaviour of Nickel-aluminium Bronze |
| Author(s) |
Fenfen Yang, Tongmin Wang, Enyu Guo, Huijun Kang, Zongning Chen |
| On-Site Speaker (Planned) |
Fenfen Yang |
| Abstract Scope |
As-cast nickel-aluminium bronze (NAB) alloys with various Ni contents (4.5-10wt.%) were prepared to develop new NAB alloys with high strength and high corrosion resistance. The evolving microstructures were linked to the change in the mechanical property and corrosion resistance of NAB alloys in 3.5 wt.% NaCl solution. The results show that the yield strength and hardness of the NAB alloys were improved after Ni addition due to more precipitated phases. The uniform corrosion behaviour was evaluated by the electrochemical impedance spectroscopic and the mass loss tests, and the local corrosion behaviour was assessed by the surface morphologic analysis. The results show that the increasing Ni content alleviated both uniform corrosion and local corrosion of the NAB alloys. The mechanism of inhibition of Ni addition in the corrosion behaviour of NAB alloys is due to the disappearance of corrodible phase, the decreased microgalvanic corrosion and the formation of more stable film. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |