摘要
本文采用失重法,电化学极化以及交流阻抗法研究Inconel625合金堆焊层在10℃海水中的腐蚀行为。结果表明,Inconel625合金堆焊层在海水中初期腐蚀速率较高,随后降低到0.0004mm/a。Inconel625合金堆焊层表面没有观察到点蚀孔,表面不存在钝化膜。合金堆焊层在海水中为均匀腐蚀,海水中浸泡90天耐腐蚀性能稳定。
Inconel 625 alloy as surfacing welding layer of composite tube has been widely used in the marine gas transportation. Weight loss method,electrochemical polarization and AC impedance were used to investigate the initial corrosion behavior of Inconel 625 alloy surfacing welding layer in seawater at 10 ℃. The results showed that,the initial corrosion rate of the layer was fast,but then dropped quickly to 0. 000 4 mm/a. No pitting and passive film weve observed on the surface of the Incomel 625 surfacing welding layer. The surfacing welding layer exhibited uniform corrosion and its anti-corrosion property was excellent after 90 days of immersion in seawater.
出处
《材料开发与应用》
CAS
2015年第1期50-53,共4页
Development and Application of Materials
