CAJ | 학술논문

采用IM6e型电化学工作站,对MB8镁合金微弧氧化及封孔涂装后试样进行电化学I/E极化曲线和Tafel斜率分析.结果表明:各种封孔工艺都能不同程度地提高微弧氧化陶瓷层的耐蚀性,其中电泳涂装降低腐蚀电流1个数量级,是良好的封孔工艺:采用水煮+有机树脂多种封孔工艺综合处理降低陶瓷层腐蚀电流2个数量级,耐蚀性最好.
채용IM6e형전화학공작참,대MB8미합금미호양화급봉공도장후시양진행전화학I/E겁화곡선화Tafel사솔분석.결과표명:각충봉공공예도능불동정도지제고미호양화도자층적내식성,기중전영도장강저부식전류1개수량급,시량호적봉공공예:채용수자+유궤수지다충봉공공예종합처리강저도자층부식전류2개수량급,내식성최호.
Mg alloy MB8 was surface-modified by micro-arc oxidation (MAO).Several organic coatings were prepared on the micro-arc oxidation coating of the Mg alloy.Electrochemical workstation IM6e was used to measure the electrochemical steady state I/E polarization curves and Tafel slope of the micro-arc oxidation coating in combination with organic coatings.The results show that the organic coatings can increase various degrees of the corrosion resistance of the ceramic layer by micro-arc oxidization of the Mg alloy.Especially,the corrosion resistance of sample which used multi-technics of seal is best.