ABSTRACT | 第6-9页 |
Chapter 1 Introduction | 第16-31页 |
1.1 Background | 第16-19页 |
1.2 Review on related progress | 第19-28页 |
1.2.1 Effects of hydrogen on open circuit states of iron and steels in aqueous solutions | 第19-22页 |
1.2.2 Effects of hydrogen on anodic polarization behavior of iron and steels in aqueous solutions | 第22-24页 |
1.2.3 The effects of hydrogen on the properties of the surface films formed on iron and steels in aqueous solutions | 第24-28页 |
1.3 Main research contents in the present work | 第28-30页 |
1.3.1 The effects of hydrogen on anodic dissolution and passivation of iron in alkaline solutions of various pH values | 第28-29页 |
1.3.2 The effects of hydrogen on anodic dissolution, passivation,transpassivation and pitting corrosion of iron in weakly alkaline solutions with various concentrations of chlorides | 第29页 |
1.3.3 The effects of hydrogen on corrosion products formed on iron in pure water, sulfate and chloride solutions | 第29-30页 |
1.4 Objectives and significance | 第30-31页 |
Chapter 2 Materials and Experimental Methods | 第31-41页 |
2.1 Material and specimen preparation | 第31-32页 |
2.1.1 Specimen for dual cell | 第31页 |
2.1.2 Specimen for hydrogen-charging and immersion tests | 第31-32页 |
2.2 Experimental methods | 第32-33页 |
2.2.1 Chemical used | 第32页 |
2.2.2 Hydrogen-charging | 第32-33页 |
2.2.3 Pre-cleaning by cathode polarization | 第33页 |
2.3 Electrochemical cells | 第33-35页 |
2.3.1 Two-electrode electrochemical cell | 第33页 |
2.3.2 Three-electrode electrochemical cell | 第33-34页 |
2.3.3 Devanathan type cell | 第34-35页 |
2.4 Immersion tests | 第35页 |
2.5 Electrochemical measurements | 第35-38页 |
2.5.1 Open circuit potential | 第36页 |
2.5.2 Electrochemical impedance spectroscopy (EIS) | 第36-37页 |
2.5.2.1 Nyquist plots | 第36-37页 |
2.5.2.2 Bode plots | 第37页 |
2.5.3 Anodic polarization | 第37-38页 |
2.6 Characterization of surface films | 第38-41页 |
2.6.1 X-ray Diffraction (XRD) analysis | 第38页 |
2.6.2 Raman Spectroscopy analysis | 第38-39页 |
2.6.3 Scanning electron microscope (SEM) analysis | 第39页 |
2.6.4 X-ray photoelectron spectroscopy (XPS) analysis | 第39-40页 |
2.6.5 ICP-AES | 第40-41页 |
Chapter 3 Effects of Hydrogen on Anodic Dissolution and Passivation of Iron in Alkaline Solutions | 第41-82页 |
3.1 Introduction | 第41-43页 |
3.2 Experimental | 第43-47页 |
3.2.1 Apparatus for electrochemical measurements | 第43页 |
3.2.2 Hydrogen-charging | 第43-44页 |
3.2.3 Pre-cleaning by cathode polarization | 第44页 |
3.2.4 Electrochemical measurements | 第44-46页 |
3.2.5 Analyses of solution composition after electrochemical measurements | 第46-47页 |
3.2.6 Analysis of surface films | 第47页 |
3.3 Results | 第47-74页 |
3.3.1 Electrochemical behavior and surface film properties for iron in bicarbonate solutions | 第47-58页 |
3.3.1.1 Open circuit potential | 第47-54页 |
3.3.1.2 Potentiodynamic anodic polarization curves | 第54-58页 |
3.3.1.3 Potentiostatic polarization results | 第58页 |
3.3.2 EIS of non-charged and hydrogen-charged iron | 第58-64页 |
3.3.2.1 Mixed bicarbonate/carbonate and carbonate solutions | 第62-64页 |
3.3.2.2 Electrochemical behavior of iron in 0.1 mol/L Na OH solution | 第64页 |
3.3.3 Surface film properties measured by XPS | 第64-70页 |
3.3.4 Electrochemical behavior of iron in mixed bicarbonate/carbonate and carbonate solutions | 第70-72页 |
3.3.5 Electrochemical behavior of iron in 0.1 mol/L Na OH solution | 第72-74页 |
3.4 Discussion | 第74-81页 |
3.4.1 Effects of solution composition and hydrogen on open circuit states | 第75-78页 |
3.4.2 Effects of solution composition and hydrogen on anodic polarization behavior | 第78-80页 |
3.4.3 Effects of solution composition and hydrogen on EIS | 第80-81页 |
3.5 Conclusions | 第81-82页 |
Chapter 4 Effects of hydrogen on reactivation of iron in alkaline solutions | 第82-93页 |
4.1 Introduction | 第82-83页 |
4.2 Experimental | 第83-85页 |
4.2.1 Material and electrolytes | 第83页 |
4.2.2 Test procedure | 第83-85页 |
4.3 Results and discussion | 第85-92页 |
4.3.1 Open circuit potential | 第85-87页 |
4.3.2 Electrochemical impedance spectroscopy | 第87-89页 |
4.3.3 Anodic polarization curves | 第89-90页 |
4.3.4 Effects of hydrogen on dissolution and passivation | 第90-92页 |
4.4 Conclusions | 第92-93页 |
Chapter 5 Effects of Hydrogen on Anodic Dissolution, Passivation and Pitting Corrosion of Iron in Bicarbonate Solutions Containing Chloride Anions | 第93-117页 |
5.1 Introduction | 第93-94页 |
5.2 Experimentals | 第94-97页 |
5.3 Results and discussion | 第97-115页 |
5.3.1 Open circuit potentials | 第102-104页 |
5.3.2 EIS results | 第104-105页 |
5.3.3 Potentiodynamic anodic polarization curves | 第105-106页 |
5.3.4 Potentiostatic polarization results | 第106-114页 |
5.3.4.1 Current density vs. time curves | 第106-107页 |
5.3.4.2 Surface morphologies | 第107-114页 |
5.3.5 The effects of hydrogen and pre-cleaning on anodic dissolution,passivation and pitting corrosion | 第114-115页 |
5.4 Conclusions | 第115-117页 |
Chapter 6 Effects of Hydrogen on Properties of the Corrosion Products Formed on Iron in Pure Water at Various Temperatures | 第117-126页 |
6.1 Introduction | 第117页 |
6.2 Experimental | 第117-119页 |
6.2.1 Material and specimens | 第117-118页 |
6.2.2 Hydrogen charging | 第118页 |
6.2.3 Immersion tests and characterization of the surface films | 第118-119页 |
6.3 Results and discussion | 第119-125页 |
6.3.1 Surface morphologies of iron specimens after the immersion tests | 第119-121页 |
6.3.2 Raman spectra and XRD patterns of the surfaces of corroded iron specimens | 第121-124页 |
6.3.3 EIS and Mott-Shottky (M-S) plot results | 第124-125页 |
6.4 Conclusions | 第125-126页 |
Chapter 7 Effects of Hydrogen on the Properties of Corrosion Products Formed on Iron in Chloride and Sulfate Solutions | 第126-148页 |
7.1 Introduction | 第126-127页 |
7.2 Experimental procedures | 第127-128页 |
7.2.1 Material and specimen | 第127页 |
7.2.2 Hydrogen charging | 第127-128页 |
7.2.3 Immersion tests | 第128页 |
7.2.4 Characterization of the corrosion products | 第128页 |
7.3 Results and discussion | 第128-146页 |
7.3.1 Effects of hydrogen on the properties of corrosion products formed on iron in chloride solutions | 第128-139页 |
7.3.1.1 Open circuit potentials | 第129-131页 |
7.3.1.2 Surface morphologies of iron specimens after the immersion tests | 第131-134页 |
7.3.1.3 XRD patterns and Raman spectra of corroded iron specimens | 第134-139页 |
7.3.2 Effects of hydrogen on the properties of corrosion products formedon iron in sulfate Solutions | 第139-146页 |
7.3.2.1 Open circuit potentials | 第139-140页 |
7.3.2.2 Surface morphologies of iron specimens after the immersion tests | 第140-142页 |
7.3.2.3 XRD pattern and Raman spectra of corroded iron specimens | 第142-146页 |
7.4 Conclusions | 第146-148页 |
Chapter 8 Conclusions and Suggested Future Work | 第148-151页 |
8.1 Conclusions | 第148-150页 |
8.2 Highlights and suggested future works | 第150-151页 |
References | 第151-163页 |
Publications during the Ph. D study | 第163-164页 |
Research Projects Involved During the Ph. D Study | 第164-165页 |
Scholarship and Awards | 第165-166页 |
Acknowledgements | 第166-167页 |
中文详细摘要 | 第167-202页 |