Effect of Cu grain boundary modification on microstructure and corrosion resistance in recycled Nd-Fe-B sintered magnets

Pan, Mengjie; Liu, Xiaolian; Jin, Weiyang; Fu, Song; Yang, Enxiang; Zhao, Lizhong; Zhang, Xuefeng; Yan, Mi

doi:10.1016/j.jmmm.2022.169109

Cited by 10 publications

(1 citation statement)

References 36 publications

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“…The EDS results, as shown in Figure 6(b-3), confirmed that Cu and Sb were mainly enriched at the grain boundaries. Research has indicated that Cu and Sb increase the potential at the grain boundaries [21,22]. During galvanic cell corrosion, the α-Fe within the grains was preferentially corroded over the grain boundaries, thus reducing the inter-granular corrosion.…”

Section: Salt Spray Testmentioning

confidence: 99%

Research on the Chloride Ion Corrosion Resistance of Cu-Sb-Added Low-Carbon Steel

Chen,

Meng,

et al. 2024

Metals

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The corrosion resistance of low-carbon steel and two new low-alloy, corrosion-resistant steels containing Cu-Sb and Cu was studied in a simulated seawater environment. The effects of Cu and Sb on corrosion resistance were analyzed by an electrochemical test and accelerated corrosion test. The results show that Cu and Sb reduce the corrosion current density by increasing the corrosion potential and increasing the polarization resistance. Sb can promote the formation of Cu-containing compounds with a strong corrosion inhibition performance, and it can enhance the overall corrosion resistance of steel. In addition, Sb can also promote the conversion of Fe2+ ions into a corrosion-resistant compound, α-FeOOH, and it also further improves the corrosion resistance of steel.

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Section: Salt Spray Testmentioning

confidence: 99%