TY - JOUR
T1 - Effect of Temperature and Concentration on the Corrosion Behavior of 42CrMoE Low Alloy Steel in Boric Acid Solution
AU - Zhang, Wei
AU - Zhang, Yi
AU - Miao, Xueliang
AU - Sun, Baozhuang
AU - Li, Chengtao
AU - Liu, Zhiyong
AU - Dong, Chaofang
AU - Li, Xiaogang
N1 - Publisher Copyright:
© ASM International 2024.
PY - 2025/4
Y1 - 2025/4
N2 - This study investigated the corrosion behavior and mechanism of 42CrMoE LAS in boric acid solutions with varying concentrations (2500-37000 mg/l) and temperatures (25-97.5 °C) using electrochemical measurement and weight loss immersion experiment. Results revealed that at a low boric acid concentration, the corrosion rate initially increased and subsequently decreased with increasing temperature. While at higher concentrations, the corrosion rate exhibited a monotonic increase with increasing temperature. Additionally, the steel displayed pitting corrosion, which intensified with increasing boric acid concentrations. However, at high temperature, pits corrosion transformed toward uniform corrosion. The interrelated effects of temperature and boric acid concentration primarily modulated the pH and dissolved oxygen content, consequently impacting the corrosion behavior. With escalating temperature and concentration, corrosion products transformed from protective Fe2O3 and Fe3O4 to inadequately protective FeOOH, ultimately resulting in an increased corrosion rate of 42CrMoE LAS.
AB - This study investigated the corrosion behavior and mechanism of 42CrMoE LAS in boric acid solutions with varying concentrations (2500-37000 mg/l) and temperatures (25-97.5 °C) using electrochemical measurement and weight loss immersion experiment. Results revealed that at a low boric acid concentration, the corrosion rate initially increased and subsequently decreased with increasing temperature. While at higher concentrations, the corrosion rate exhibited a monotonic increase with increasing temperature. Additionally, the steel displayed pitting corrosion, which intensified with increasing boric acid concentrations. However, at high temperature, pits corrosion transformed toward uniform corrosion. The interrelated effects of temperature and boric acid concentration primarily modulated the pH and dissolved oxygen content, consequently impacting the corrosion behavior. With escalating temperature and concentration, corrosion products transformed from protective Fe2O3 and Fe3O4 to inadequately protective FeOOH, ultimately resulting in an increased corrosion rate of 42CrMoE LAS.
KW - 42CrMoE
KW - boric acid corrosion
KW - corrosion behavior
KW - temperature
UR - https://www.scopus.com/pages/publications/85192493663
U2 - 10.1007/s11665-024-09520-5
DO - 10.1007/s11665-024-09520-5
M3 - 文章
AN - SCOPUS:85192493663
SN - 1059-9495
VL - 34
SP - 5663
EP - 5673
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 7
ER -