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해수환경하에서 나노복합재료(Epoxy/MWCNTs)로 coating한 마그네슘합금(AM50)에 대한 부식평가
조일민(Il Min Jo),정도연(Do Yeon Jung),김철인(Chul In Kim),심충무(Choong Moo Shim),김연직(Yon Jig Kim),임재규(Jae Kyoo Lim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
Mg and its alloys have attracted a lot of attention in many different sectors of engineering application such as automotive, aircraft, electronics, handled or household industry field. These are due to lightweight and superior specific strength of magnesium alloy. However, the low corrosion resistance of Mg alloys make it difficult to apply in many engineering application. The present investigation evaluates nanocomposite layers which were prepared by adding a multi walled carbon nanotubes (MWCNTs) to an epoxy resin aiming to study the resulting corrosion mechanism and corrosion performance of Mg alloy AM50. The pure polymer layer was investigated and compared between the nanocomposites containing CNTs. Distribution behavior of carbon nanotubes in the epoxy matrix was examined through forced scanning electron microscopy (FE-SEM). The results demonstrated that, the CNTs demonstrated a good dispersion inside the polymer matrix. Both nanocomposite and pure coated samples showed subsequently good adhesive properties to resist aggressive corrosion under seawater environment for a long period.