Effect of grain size on the electrochemical behavior of oxide film in solution treated Al-Zn-Mg alloys.
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Effect of grain size on the polarization behavior and interfacial impedance response of oxide film of solution treated Al-Zn-Mg alloy has been investigated. Pitting potential in 0.5kmol/m3 NaCl solution becomes noble and passivation current density decreases with increase in grain size number. Diameter of semicircles in impedance diagrams, which corresponds to resistance for each reaction, tends to increase with increase in the grain boundary length in Al-Zn-Mg alloy and Cr containing alloy, though it does not almost depend on the grain boundary length in Cu containing alloy. Capacitance calculated from impedance diagrams shows a similar dipendence on the grain boundary length with that of resistance.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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