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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 이한승
- 발행연도
- 2016
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Arc thermal metal spray method (ATMS method) provides proven long-term anti-corrosive coating systems in terms of the corrosion of steel structure by using zinc, aluminum and their alloys. This paper focused on quantitatively evaluating the anti-corrosion performance of ATMS film coated on steel in regards to spraying metal types (Zn-based and Al-based) and presence or absence of pore sealing agent (PSA). PSA is a coating which improves anti-corrosion performance of ATMS film. For the quantitative evaluation, tafel polarization test and Electrochemical impedance spectroscopy (EIS) test were conducted. Also, based on the test result, evaluation on prediction of corrosion-resistance life of ATMS film was conducted. In terms of the prediction, JIS H 9641 was referred to calculate the corrosion-resistance life.
As a result of tafel polarization test, it was found that ATMS film by Al-Mg Metal alloy (Al 95% Mg 5%) by mass led to the most successful anti-corrosion performance. Through EIS test, the reaction system at the interface of ATMS film under electrolyte was analyzed by interpreting its equivalent circuit (EC). Consequently, the representative ECs of ATMS films, in the initial anti-corrosion state, were suggested as models to be applicable.
As a result of prediction on corrosion-resistance life of ATMS film, ATMS films showed about 2 to 4.5 times longer corrosion resistance life than conventional anti-corrosion method, hot dip galvanizing. In conclusion, ATMS method is judged to replace conventional anti-corrosion method (hot dip galvanizing and heavy duty coating) as a new anti-corrosion method which shows more excellent anti-corrosion performance.
As a result of tafel polarization test, it was found that ATMS film by Al-Mg Metal alloy (Al 95% Mg 5%) by mass led to the most successful anti-corrosion performance. Through EIS test, the reaction system at the interface of ATMS film under electrolyte was analyzed by interpreting its equivalent circuit (EC). Consequently, the representative ECs of ATMS films, in the initial anti-corrosion state, were suggested as models to be applicable.
As a result of prediction on corrosion-resistance life of ATMS film, ATMS films showed about 2 to 4.5 times longer corrosion resistance life than conventional anti-corrosion method, hot dip galvanizing. In conclusion, ATMS method is judged to replace conventional anti-corrosion method (hot dip galvanizing and heavy duty coating) as a new anti-corrosion method which shows more excellent anti-corrosion performance.
목차
List of Tables ⅲList of Figures ⅳABSTRACT ⅵChapter. 1 Introduction 011.1 Research Background 011.2 Research Objective 04Chapter. 2 Literature Review 062.1 Theory of Arc Thermal Metal Spray Method 062.2 Anti-corrosion Mechanism of ATMS Film 102.3 Interface Reaction of ATMS Film Under Electrolyte 12Chapter. 3 Experimental 133.1 Experimental Variables 133.2 Specimens List 143.3 Experimental Process 163.4 Electrochemical Test 20Chapter. 4 Analysis and Discussion 234.1 Result Analysis by Tafel Polarization Test 234.2 Result Analysis by EIS Test 324.3 Prediction on Corrosion-resistance Life of ATMS Film 41Chapter. 5 Conclusion 46REFERENCE 48APPENDIX 51국 문 요 지 67Writing of Thanks 69
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