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Due to their promising mechanical characteristics, copper-based shape-memory alloys (SMAs) are crucial for numerous applications. This research inspects the outcomes of various quantities (0.4%, 0.8% and 1.2% wt) of boron (B) additions on the resistance against corrosion and the microstructure of Cu-Al-Ni SMAs using SEM, EDS, XRD and electrochemical tests in a solution of 3.5% NaCl. Numerous measurement baths were used for aged / unaged Cu-Al-Ni-xB SMAs. The electrochemical tests were performed over several periods to confirm the reliability of the corrosion-resistance property, after which the samples were verified using solutions of 3.5% NaCl. The experimental results demonstrated that adding 1.2% wt B followed by an ageing process resulted in an improvement in the corrosion resistance in Cu-Al-Ni SMAs and a decrease in the corrosion rate by 58%.

The Effect of Boron Addition on The Microstructure and Corrosion Resistance of Cu-Al-Ni Shape-Memory Alloys Prepared by Powder Technology