Prominent inhibition efficiency of sodium nitrate to corrosion of Al-based amorphous alloy
Prominent inhibition efficiency of sodium nitrate to corrosion of Al-based amorphous alloy
复制标题
硝酸钠对铝基非晶合金腐蚀的显着抑制效果
DOI：
10.1016/j.apsusc.2020.147211
复制
发表时间：
2020-11-15
影响因子：
6.7
通讯作者：
Wang, J. Q.
中科院分区：
文献类型：
--
作者：
Gao, M. H.;Zhang, S. D.;Wang, J. Q.
在NaCl溶液中加入NaNO3可以显著提高al基非晶合金的耐蚀性。浸液初期钝化膜的生长速度加快，亚稳点蚀受到抑制。随着NaNO3浓度的增加，al基非晶合金的点蚀电位增大，当NaNO3浓度大于0.03 m时，完全避免了点蚀，钝化膜从点蚀到转化的转变可归因于钝化膜中NO3-的掺入。硝酸钠是一种高效的铝基非晶合金缓蚀剂。
The corrosion resistance of Al-based amorphous alloy can be significantly improved with the addition of NaNO3 into NaCl solution. The growth rates of passive film in the initial stage of immersion are accelerated, and the metastable pitting is inhibited. The pitting potential of Al-based amorphous alloy is increased with the concentration of NaNO3, and the pitting corrosion is completely avoided when the concentration of NaNO3 is above 0.03 M. The transition from pitting to transpassivation can be attributed to the incorporation of NO3- in passive film. Sodium nitrate is an efficient corrosion inhibitor for Al-based amorphous alloy.