Abstract
This study performs an electrochemical experiment to quantitatively evaluate the corrosion resistance performance in a Zn–Al thermal metal spraying method and produces corrosion current density according to the type of corrosion resistance methods. Then, this study quantitatively estimates the durability life in the Zn–Al thermal metal spraying method based on this calculation. In the results of the calculation, the corrosion membrane produced in a Zn–Al thermal metal spraying method showed voltage differences more than 300 mV and that demonstrated enough corrosion performance with the corrosion resistance reaction of base materials and proper Zn–Al ratio, such as 50:50. Also, the results exhibited that the corrosion speed in a Zn–Al thermal metal spraying method was 0.66 time faster than that of the zinc galvanizing method in the estimation based on the standard of corrosion resistance service years in a zinc galvanizing method (JIS H 8641).
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