Establishing a pre-passivation method to improve the corrosion resistance of B30 alloy in deep-sea environment
Year: 2025
Type: article
Abstract: The response surface methodology (RSM) was used to investigate the influence of benzotriazole (BTA), sulfosalicylic acid (SSA), H 2 O 2 , and temperature on the corrosion resistance of pre-passivation film formed on copper. The optimal pre-passivation process was predicted: BTA of 14–16 g/L, SSA of 2-2.3 g/L, H 2 O 2 of 10–11 ml/L, sodium dodecylsulfate of 0.5 g/L and temperature of 45–50℃. An improved pre-passivation treatment suitable for B30 alloy, using H 3 PO 4 instead of SSA, showed good corrosion resistance, the polarization resistance increased nearly 100 times in its ‘infancy’. In the 30 days of corrosion test, the localized corrosion was significantly inhibited, thus prolonging the service life of the heat-transfer tube.
Source: npj Materials Degradation
Authors: Tengfei Yin, Song Meng, Yang Zhao, Tao Zhang, Fuhui Wang
Institution: Northeastern University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,590
Awards: G1957477077, G4877933699, G5136229636
OpenAlex ID: W4415880667