The role of nickel in mechanical performance and corrosion behaviour of nickel-aluminium bronze in 3.5 wt.% NaCl solution
By Yang, Fenfen; Kang, Huijun; Guo, Enyu; Li, Rengeng; Chen, Zongning; Zeng, Yanhua; Wang, Tongmin
Published in Corrosion Science
2018
Abstract
The mechanical properties and corrosion behaviour in 3.5 wt.% NaCl solution of as-cast nickel-aluminium bronze (NAB) alloys with four Ni contents were investigated. The increase in Ni content leads to more precipitated ? phases, therefore improving the yield strength and hardness of the NAB alloys. Ni addition was found to significantly suppress the formation of corrodible ?' phase and increase the Ni concentration in ? solid solution. The electrochemical impedance spectroscopic and static immersion tests showed that the increase in Ni content (4.5
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