摘要
用动电位慢扫描法研究了钼系缓蚀剂在去离子水中和含５ｐｐｍ Ｃｌ－ 的去离子水中对Ａ３ 钢的缓蚀性能，并与２００ｐｐｍ 的Ｋ２ＣｒＯ４ 在同样条件下对Ａ３ 钢的缓蚀性能作了比较。在５ｐｐｍ Ｃｌ－ 的去离子水的敞开体系中，１００ｐｐｍ Ｎａ２ＭｏＯ４ 的缓蚀性能与２００ｐｐｍ 的Ｋ２ＣｒＯ４ 相当；复合缓蚀剂Ｎａ２ＭｏＯ４ （１２ｐｐｍ） ＋ ＮａＮＯ２ （２３ｐｐｍ） ＋ ＺｎＳＯ４（５ｐｐｍ） ＋ 十二酰基肌氨酸钠（１００ｐｐｍ） 的性能优于２００ｐｐｍ Ｋ２ＣｒＯ４ ； 复合缓蚀剂Ｎａ２ＭｏＯ４（８６ｐｐｍ） ＋ Ｎａ２ＳｉＯ３（１１４ｐｐｍ） 的性能显著优于２００ｐｐｍ 的Ｋ２ＣｒＯ４ 。
Separately in deionized water and 5ppm chloride ions containing deionized water, corrosion inhibition of molybdenum group inhibitor on A 3 steel was studied by method of potentialdynamic polarization, and compared with that of 200ppm potassium chromate in the same condition. The results show that corrosion inhibition of 100ppm sodium molybdate is equivalent to that of 200ppm potassium chromate, and complexing corrosion inhibitor consisting of 12ppm sodium molybdate, 23ppm sodium nitrite, 5ppm zinc sulfate and 100ppm lauroyl sodium sarcosine is superior to potassium chromate in corrosion inhibition, and complexing corrosion inhibitor consisting of 86ppm sodium molybdate and 114ppm sodium silicate is remarkably superior to that of 200ppm potassium chromate.
出处
《电镀与涂饰》
CAS
CSCD
2000年第1期9-14,共6页
Electroplating & Finishing
关键词
钼酸盐
缓蚀剂
动电位慢扫描
电化学法
molybdate
corrosion inhibitor
zeta-potential polarization
