摘要
通过除氧试验、腐蚀试验和电化学试验，研究了异抗坏血酸对亚硫酸盐防腐蚀效果的影响。结果表明，异抗坏血酸使亚硫酸盐几乎失去了除氧作用，但却提高了亚硫酸盐在含氧水中对２０ｇ钢的防腐蚀性能，使钢的自腐蚀电位更剧烈负移并使阴极极化增加。试验结果用公认的除氧机理无法解释，但为外加还原性气氛机理提供了有力证据，同时为增强亚硫酸盐的防腐蚀效果和解决其贮存失效问题提供了可行的方法。
The
dependence of anti corrosion of sulfite on isoascorbic acid was studied through the use of
oxygen removal tests, corrosion experiments and electrochemical tests. It has been shown
that the isoascorbic acid can make sulfite to nearly lose oxygen removal capacity, but it
increases the other functions of the sulfite, including anti corrosion effect on 20G steel,
potential shift in a less noble direction and the cathodic polarization of steel in water containing
oxygen. It is impossible to explain the test results with the currently accepted oxygen removal
mechanism. However, the results provided important evidences for the impressed reductive
atmosphere mechanism of sulfite. A feasible method for strengthening the anti corrosion
effectiveness of the sulfite and an effective method for preventing sulfite failure during its
storage have been made available.
出处
《热能动力工程》
CAS
CSCD
北大核心
1999年第3期176-178,184,共4页
Journal of Engineering for Thermal Energy and Power
基金
国家科技专项
关键词
亚硫酸盐
除氧
异抗坏血酸
溶解氧腐蚀
防腐蚀
sulfite, catalyzed sulfite, stabilized sulfite,
isoascorbic acid, dissolved oxygen corrosion
