缓蚀剂对青铜的缓释性能的影响

Influence of Inhibitor on Sustained-release Properties of Bronze

采用静态失重挂片考察了1mol/LHCl溶液中苯并三氮唑(BTA)、2-氨基-5-巯基-1-3-4-噻二唑(AMT)和2-巯基苯并恶唑(MBO)对青铜的缓释作用;用傅立叶红外光谱仪(FTIS)对这三种缓蚀剂与粉状锈形成凝胶的结构进行研究。结果显示,MBO对青铜的缓释效率高达97.6%;BTA和AMT的凝胶结构为Cu(I)和Cu(Ⅱ)复合膜,MBO为单一的Cu(I)膜。

The corrosion inhibition action of benzotriazole （BTA）, 2-amino-5-mercapto-1, 3, 4-thiadizole （AMT） and 2-mercapto benzoxazole （MBO） for bronze in 1 mol/L HCl solution was investigated by coupormtests. The structure of gelatin formed by the three inhibitors in the surface of bronze is analyzed by Fourier transform infiared spectroscopy （FTIS）. The results show that the best inhibition efficiency （MBO for bronze） is 97.6%; the gelatin structures of BTA and AMT are Cu （ Ⅰ ） and Cu （Ⅱ） complex film, the gelatin structure of MBO is only Cu （ Ⅰ ） film.