The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concent...The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concentration: iron | iron oxide | ODA layer with iron oxide Higher ODA concentration: iron | iron oxide | ODA layer with iron oxide | pure ODA layer It is shown from infrared specular reflection that the surface layer of iron treated with higher ODA concentration reflects ν (CH) absorption peak corresponding to pure ODA layer. Every ν (CH) absorption peak shows opposite absorption phenomenon because of reflection from the iron oxide, which is under the pure ODA layer.Photoelectrochemical study exhibits that ODA treatment leads to the changes in physical structure of iron oxide layer. ODA treatment was successfully applied to lay- up protection in power plant.展开更多
Corrosion inhibition of benzotriazole(BTA) and its derivative CBTME on Cu in 3%NaCl solution was studied by SERS technique. The inhibition mechanism for BTA and CBTME on copper corrosion in the solution was found to b...Corrosion inhibition of benzotriazole(BTA) and its derivative CBTME on Cu in 3%NaCl solution was studied by SERS technique. The inhibition mechanism for BTA and CBTME on copper corrosion in the solution was found to be similar each other, by which a protective film is formed through the triazole ring. The substituent group ( -COOCH 3 ) of CBTME plays the role in the inhibition effect due to steric hindrance. A combination of BTA and CBTME showed a synergistic effect and the inhibition mechanism remained the same as individual species.展开更多
文摘The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concentration: iron | iron oxide | ODA layer with iron oxide Higher ODA concentration: iron | iron oxide | ODA layer with iron oxide | pure ODA layer It is shown from infrared specular reflection that the surface layer of iron treated with higher ODA concentration reflects ν (CH) absorption peak corresponding to pure ODA layer. Every ν (CH) absorption peak shows opposite absorption phenomenon because of reflection from the iron oxide, which is under the pure ODA layer.Photoelectrochemical study exhibits that ODA treatment leads to the changes in physical structure of iron oxide layer. ODA treatment was successfully applied to lay- up protection in power plant.
文摘Corrosion inhibition of benzotriazole(BTA) and its derivative CBTME on Cu in 3%NaCl solution was studied by SERS technique. The inhibition mechanism for BTA and CBTME on copper corrosion in the solution was found to be similar each other, by which a protective film is formed through the triazole ring. The substituent group ( -COOCH 3 ) of CBTME plays the role in the inhibition effect due to steric hindrance. A combination of BTA and CBTME showed a synergistic effect and the inhibition mechanism remained the same as individual species.
