Pub Date : 2014-07-29DOI: 10.11903/1002.6495.2013.262
李登辉, 文九巴, 贺俊光, 高军伟
Influence of solution treatment and cool rolling deformation on the microstructure and electrochemical performance of the Al-Ga-Mg-Mn-Bi anode alloy was investigated by measuring the impedance spectroscopy, polarization curve, free-corrosion rate, etc. The results show that: in comparison with the cast alloy, the quantity of the second phase, the free-corrosion rate and the hydrogen evolution rate of the solution-treated alloy were greatly reduced, while the amount and size of corrosion pits were also reduced with a negative shift of its potential of constant- current discharge; after cool rolling deformation the alloy exhibits a rather uniform corrosion morphology with small pits and also a negative shift of its potential of constant-current discharge.
{"title":"室温轧制及固溶处理对Al-Ga-Mg-Mn-Bi阳极合金电化学性能的影响","authors":"李登辉, 文九巴, 贺俊光, 高军伟","doi":"10.11903/1002.6495.2013.262","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.262","url":null,"abstract":"Influence of solution treatment and cool rolling deformation on the microstructure and electrochemical performance of the Al-Ga-Mg-Mn-Bi anode alloy was investigated by measuring the impedance spectroscopy, polarization curve, free-corrosion rate, etc. The results show that: in comparison with the cast alloy, the quantity of the second phase, the free-corrosion rate and the hydrogen evolution rate of the solution-treated alloy were greatly reduced, while the amount and size of corrosion pits were also reduced with a negative shift of its potential of constant- current discharge; after cool rolling deformation the alloy exhibits a rather uniform corrosion morphology with small pits and also a negative shift of its potential of constant-current discharge.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-07-29DOI: 10.11903/1002.6495.2013.256
Can Sun, Xingwu Guo, Shaohua Wang, W. Ding
A new environment-friendly homogenization pretreatment process was adopted for the electroless nickel plating on AZ91D magnesium alloy. Then, the morphologies, chemical composition and microstructure of the pretreated layer and the formed Ni-P coating were studied using scanning electronic microscopy(SEM), energy-dispersive X-ray spectroscopy(EDS) and X-ray diffraction spectroscopy(XRD). It was indicated that a dense Zn film formed on the substrate surface after the homogenization pretreatment, due to the selective removal of β phase during the processing.As the result, the subsequently formed Ni-P coating was uniform, compact and defect-free with P content around 7.0%, which was characterized as an amorphous matter by XRD. Potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) tests revealed that the Ni-P coating could significantly improve the corrosion resistance of AZ91D magnesium alloy with an obvious positive shifting of corrosion potential by 1.136 V and a dramatic reduce of corrosion current density by two orders of magnitude. Furthermore the obtained Ni-P coating showed excellent adhesion to AZ91D substrate.
{"title":"Electroless Ni-P Plating on AZ91D Magnesium Alloy with a New Homogenization Pretreatment","authors":"Can Sun, Xingwu Guo, Shaohua Wang, W. Ding","doi":"10.11903/1002.6495.2013.256","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.256","url":null,"abstract":"A new environment-friendly homogenization pretreatment process was adopted for the electroless nickel plating on AZ91D magnesium alloy. Then, the morphologies, chemical composition and microstructure of the pretreated layer and the formed Ni-P coating were studied using scanning electronic microscopy(SEM), energy-dispersive X-ray spectroscopy(EDS) and X-ray diffraction spectroscopy(XRD). It was indicated that a dense Zn film formed on the substrate surface after the homogenization pretreatment, due to the selective removal of β phase during the processing.As the result, the subsequently formed Ni-P coating was uniform, compact and defect-free with P content around 7.0%, which was characterized as an amorphous matter by XRD. Potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) tests revealed that the Ni-P coating could significantly improve the corrosion resistance of AZ91D magnesium alloy with an obvious positive shifting of corrosion potential by 1.136 V and a dramatic reduce of corrosion current density by two orders of magnitude. Furthermore the obtained Ni-P coating showed excellent adhesion to AZ91D substrate.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-07-29DOI: 10.11903/1002.6495.2013.233
W. Tian, Rui-lin Man, Xiong Huang, F. He
A hybrid sol was prepared by sol-gel technique with precursors of ethylsilicate(TEOS)and vinyltriethoxysilane(KH151), and which then was further doped with 1.5×10-3mol/L Ce(NO3)3to get a Ce-doped hybrid sol. A coating of this Ce-doped hybrid sol was prepared on aluminum tube by dipping method. Results of bluestone drips test, neutral salt spray test and electrochemical measurement showed that the coating doping modified hybrid film possessed superior corrosion performance rather than the conventional chromate passivation film. The infrared spectrum of the coating revealed that there existed different types of Si—O—Si covalent bonds and organic functional groups C=C covalent bonds, which might enhance the hydrophobicity of the coating. Finally SEM examination showed that the formed coating was dense, uniform and smooth.
{"title":"Preparation and Corrosion Performance of a Doping Modified Hybrid Film on Aluminum Tube","authors":"W. Tian, Rui-lin Man, Xiong Huang, F. He","doi":"10.11903/1002.6495.2013.233","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.233","url":null,"abstract":"A hybrid sol was prepared by sol-gel technique with precursors of ethylsilicate(TEOS)and vinyltriethoxysilane(KH151), and which then was further doped with 1.5×10-3mol/L Ce(NO3)3to get a Ce-doped hybrid sol. A coating of this Ce-doped hybrid sol was prepared on aluminum tube by dipping method. Results of bluestone drips test, neutral salt spray test and electrochemical measurement showed that the coating doping modified hybrid film possessed superior corrosion performance rather than the conventional chromate passivation film. The infrared spectrum of the coating revealed that there existed different types of Si—O—Si covalent bonds and organic functional groups C=C covalent bonds, which might enhance the hydrophobicity of the coating. Finally SEM examination showed that the formed coating was dense, uniform and smooth.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-29DOI: 10.11903/1002.6495.2013.197
Qiong Li, Zhiyong Liu, Lin Lu, Du Cuiwei, Song Wang, Xiaogang Li
Severe localized corrosion of ZG06Cr13Ni4Mo stainless steel hydraulic turbine blades after years of service is analyzed by means of examinations of macro-morphology, micro-morphology and energy dispersion spectrum(EDS) to identify the causes of corrosion. The results indicated that the initiation of pitting was closely related to the localized plastic deformation of surface layer and the ulcer-like corrosion was located mainly in the weld repaired area. More specifically, the pitting corrosion in this case was attributed to microbiological corrosion induced by sulfate reducing bacteria(SRB), and the surface defects of blade generated during machining and welding might further enhance the pitting and ulcer-like corrosion.
{"title":"Failure Analysis of ZG06Cr13Ni4Mo Stainless Steel Hydraulic Turbine Blades","authors":"Qiong Li, Zhiyong Liu, Lin Lu, Du Cuiwei, Song Wang, Xiaogang Li","doi":"10.11903/1002.6495.2013.197","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.197","url":null,"abstract":"Severe localized corrosion of ZG06Cr13Ni4Mo stainless steel hydraulic turbine blades after years of service is analyzed by means of examinations of macro-morphology, micro-morphology and energy dispersion spectrum(EDS) to identify the causes of corrosion. The results indicated that the initiation of pitting was closely related to the localized plastic deformation of surface layer and the ulcer-like corrosion was located mainly in the weld repaired area. More specifically, the pitting corrosion in this case was attributed to microbiological corrosion induced by sulfate reducing bacteria(SRB), and the surface defects of blade generated during machining and welding might further enhance the pitting and ulcer-like corrosion.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66312930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-23DOI: 10.11903/1002.6495.2013.128
H. Dong, Z. Niu, Dongshan Zhao, Guang-min Li
Micro-arc oxidation coating on 6061 aluminum alloy was prepared in a Na2SiO3containing electrolyte by a constant current control mode, and the effect of current density on the microstructure and performance of micro-arc oxidation ceramic coating was studied by a series of tests. Results for the above coatings show that their thickness and surface roughness increase with the increasing current density, however, their corrosion resistance decrease, and their hardness increases first and then decreases with the increasing current density. The ceramic coatings are mainly composed of α-Al2O3and γ-Al2O3. As a comparison, a novel current control method was adopted to prepare a micro-arc oxidation coating. Accordingly, the amount of micro-cracks was significantly reduced, and the corrosion resistance was obviously enhanced for the coating prepared by the new mode.
{"title":"Effect of Current Density on Ceramic Coating Prepared by Micro-arc Oxidation on 6061 Aluminum Alloy","authors":"H. Dong, Z. Niu, Dongshan Zhao, Guang-min Li","doi":"10.11903/1002.6495.2013.128","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.128","url":null,"abstract":"Micro-arc oxidation coating on 6061 aluminum alloy was prepared in a Na2SiO3containing electrolyte by a constant current control mode, and the effect of current density on the microstructure and performance of micro-arc oxidation ceramic coating was studied by a series of tests. Results for the above coatings show that their thickness and surface roughness increase with the increasing current density, however, their corrosion resistance decrease, and their hardness increases first and then decreases with the increasing current density. The ceramic coatings are mainly composed of α-Al2O3and γ-Al2O3. As a comparison, a novel current control method was adopted to prepare a micro-arc oxidation coating. Accordingly, the amount of micro-cracks was significantly reduced, and the corrosion resistance was obviously enhanced for the coating prepared by the new mode.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-23DOI: 10.11903/1002.6495.2013.080
Zhao Shen, Lianlian Wu, Le-fu Zhang, Z. Duan, Yao Sun
Susceptibility to stress corrosion cracking(SCC) of nickel based alloy 800H was studied in supercritical water at 550 ℃, 25 MPa, 600 ℃, 25 MPa and 650 ℃, 25 MPa respectively, and its general corrosion behavior in supercritical water at 650 ℃, 25 MPa and in subcritical water at 290 ℃, 15.2 MPa respectively as well. The mechanical properties of alloy 800H were also examined at different temperatures in air. The strain-stress curve of slow strain rate tensile(SSRT) tests shows that the strength of alloy 800H decreases as temperature increases. The ex situ scanning electron microscopy(SEM) observation shows that alloy 800H under the three conditions in supercritical water all exhibits susceptibility to SCC. The SSRT tests in air show that the yield strength and tensile strength of alloy 800H decrease as temperature rises. The results of general corrosion experiment in supercritical waters show that the weight gain of the alloy follows a parabolic law; however, in subcritical water the alloy exhibits mass loss.
{"title":"Corrosion Behavior of Nickel Base Alloy 800H in High-temperature and High-pressured Water","authors":"Zhao Shen, Lianlian Wu, Le-fu Zhang, Z. Duan, Yao Sun","doi":"10.11903/1002.6495.2013.080","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.080","url":null,"abstract":"Susceptibility to stress corrosion cracking(SCC) of nickel based alloy 800H was studied in supercritical water at 550 ℃, 25 MPa, 600 ℃, 25 MPa and 650 ℃, 25 MPa respectively, and its general corrosion behavior in supercritical water at 650 ℃, 25 MPa and in subcritical water at 290 ℃, 15.2 MPa respectively as well. The mechanical properties of alloy 800H were also examined at different temperatures in air. The strain-stress curve of slow strain rate tensile(SSRT) tests shows that the strength of alloy 800H decreases as temperature increases. The ex situ scanning electron microscopy(SEM) observation shows that alloy 800H under the three conditions in supercritical water all exhibits susceptibility to SCC. The SSRT tests in air show that the yield strength and tensile strength of alloy 800H decrease as temperature rises. The results of general corrosion experiment in supercritical waters show that the weight gain of the alloy follows a parabolic law; however, in subcritical water the alloy exhibits mass loss.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-23DOI: 10.11903/1002.6495.2013.331
Lixia Liu, Y. Qiao
The electrochemical behavior of high nitrogen stainless steel(HNS) in 1 mol/L NaCl solution with different pH values was investigated by means of potentiodynamic polarization curves, electrochemical impendence spectrum and current-time transient curves. The results show that anodic passivation of HNS could occur in alkaline solutions, while the corrosion rate of HNS decreased with the increasing pH value; a porous film might be grown on HNS in neutral NaCl solution due to the companying processes of dissolution and repassivation. In acidic and alkaline NaCl solutions, the formed passive films on HNS exhibit superior protectiveness rather than that in neutral NaCl solution.
{"title":"Effect of pH Value on Electrochemical Behavior of High Nitrogen Stainless Steel in NaCl Solution","authors":"Lixia Liu, Y. Qiao","doi":"10.11903/1002.6495.2013.331","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.331","url":null,"abstract":"The electrochemical behavior of high nitrogen stainless steel(HNS) in 1 mol/L NaCl solution with different pH values was investigated by means of potentiodynamic polarization curves, electrochemical impendence spectrum and current-time transient curves. The results show that anodic passivation of HNS could occur in alkaline solutions, while the corrosion rate of HNS decreased with the increasing pH value; a porous film might be grown on HNS in neutral NaCl solution due to the companying processes of dissolution and repassivation. In acidic and alkaline NaCl solutions, the formed passive films on HNS exhibit superior protectiveness rather than that in neutral NaCl solution.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-04-23DOI: 10.11903/1002.6495.2013.116
王加余, 李澄, 尹成勇, 李西娟, 王艳慧
A well ordered porous oxide film on aluminum alloy was prepared by a three-stage process in electrolyte of boric-sulfuric-oxalic acids. The relevant growth mechanism of oxide film in the processes with modes of galvanostatic and reduced voltage was elaborated. The morphology and microstructure of the oxide films were characterized by scanning electronic microscopy(SEM). The corrosion performance of the films in 3.5% NaCl solution was examined by electrochemical impedance spectroscopy and potentiodynamic polarization curves. The results show that the anodic film exhibits to be regular and dense with pore diameter of 10~13 nm. Moreover, the electrochemical behavior of anodic oxide film could be described as that the impedance and corrosion resistance was increased with the increasing thickness of the film and the cell wall.
{"title":"硼-硫酸-草酸电解液降压阳极氧化疏孔膜层制备及表征","authors":"王加余, 李澄, 尹成勇, 李西娟, 王艳慧","doi":"10.11903/1002.6495.2013.116","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.116","url":null,"abstract":"A well ordered porous oxide film on aluminum alloy was prepared by a three-stage process in electrolyte of boric-sulfuric-oxalic acids. The relevant growth mechanism of oxide film in the processes with modes of galvanostatic and reduced voltage was elaborated. The morphology and microstructure of the oxide films were characterized by scanning electronic microscopy(SEM). The corrosion performance of the films in 3.5% NaCl solution was examined by electrochemical impedance spectroscopy and potentiodynamic polarization curves. The results show that the anodic film exhibits to be regular and dense with pore diameter of 10~13 nm. Moreover, the electrochemical behavior of anodic oxide film could be described as that the impedance and corrosion resistance was increased with the increasing thickness of the film and the cell wall.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-23DOI: 10.11903/1002.6495.2013.013
Lirong Chen, Jingjing Zhang
The corrosion of the hot water supply system in a thermal power plant in Baotou was analyzed.Results showed that corrosion of the inner surface of pipe was oxygen corrosion,the main influencing factor were DO(dissolved oxygen) and pH value.In order to solve the corrosion problem, a new compound corrosion inhibitor with Sodium erythorbate as the main component was proposed. Due to synergistic effect exists amongthe components of the compound ihibitor,therefore, the inhibitor can effectively enhance the resistance of the steel pipesto the corrosive softened waterin the system. The corrosion rate of carbon steel may be lowered to only 0.0303 mm/a with a dose of 150 mg/L inhibitor for the soften water with pH 10.
{"title":"Corrosion Characteristic and Anticorrosion Measures for Heat Supply System in a Thermal Power Plant at Baotou","authors":"Lirong Chen, Jingjing Zhang","doi":"10.11903/1002.6495.2013.013","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.013","url":null,"abstract":"The corrosion of the hot water supply system in a thermal power plant in Baotou was analyzed.Results showed that corrosion of the inner surface of pipe was oxygen corrosion,the main influencing factor were DO(dissolved oxygen) and pH value.In order to solve the corrosion problem, a new compound corrosion inhibitor with Sodium erythorbate as the main component was proposed. Due to synergistic effect exists amongthe components of the compound ihibitor,therefore, the inhibitor can effectively enhance the resistance of the steel pipesto the corrosive softened waterin the system. The corrosion rate of carbon steel may be lowered to only 0.0303 mm/a with a dose of 150 mg/L inhibitor for the soften water with pH 10.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66313066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-23DOI: 10.11903/1002.6495.2013.247
Hong Liu, Lin Zhu, Linfeng Li, Dengfeng Ji
The corrosion inhibition of Gemini surfactant(DBA2- 12) for N80 steel in 1 mol/L HCl was investigated using mass loss methods, electrochemical methods and scanning electron microscopic methods. It was found that DBA2- 12exhibited good corrosion inhibition performance. Mass loss method reveals that the inhibition efficiency increases with the increase in concentration of DBA2- 12, while decreases with the increase in temperature of acid medium. The adsorption of DBA2-12on the metal surface has been found to obey Langmuir isotherm. Potentiodynamic polarization studies clearly suggest that DBA2- 12acts as mixed- type inhibitor, which can be adsorbed on N80 steel surface, leading to the formation of a protective film to decrease the corrosion rate.
{"title":"Corrosion Inhibiton of N80 Steel in HCl Acid Medium by Gemini Surfactant","authors":"Hong Liu, Lin Zhu, Linfeng Li, Dengfeng Ji","doi":"10.11903/1002.6495.2013.247","DOIUrl":"https://doi.org/10.11903/1002.6495.2013.247","url":null,"abstract":"The corrosion inhibition of Gemini surfactant(DBA2- 12) for N80 steel in 1 mol/L HCl was investigated using mass loss methods, electrochemical methods and scanning electron microscopic methods. It was found that DBA2- 12exhibited good corrosion inhibition performance. Mass loss method reveals that the inhibition efficiency increases with the increase in concentration of DBA2- 12, while decreases with the increase in temperature of acid medium. The adsorption of DBA2-12on the metal surface has been found to obey Langmuir isotherm. Potentiodynamic polarization studies clearly suggest that DBA2- 12acts as mixed- type inhibitor, which can be adsorbed on N80 steel surface, leading to the formation of a protective film to decrease the corrosion rate.","PeriodicalId":10727,"journal":{"name":"Corrosion Science and Protection Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66312872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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