CAJ | 학술논문

利用SEM辅以EDS分析，对铜－铝置换反应下铝的氯离子点蚀的过程进行了元素的分析及形貌上的观察。点蚀核处没有铜的析出，并且点蚀核外壳部分氧含量达到50％，铝含量仅有15％；而点蚀核破裂的内部铝含量达到54％，而氧含量下降到16％。对于点蚀孔则发现了铜仅集中分布在蚀坑的周围与内部的浅层区域，并且蚀坑内部发现了铝形成了近乎直角的规则交叉棱柱结构。参考以往的研究成果，在文章中对点蚀过程中的这一系列现象给出了初步的理论解释。
이용SEM보이EDS분석，대동－려치환반응하려적록리자점식적과정진행료원소적분석급형모상적관찰。점식핵처몰유동적석출，병차점식핵외각부분양함량체도50％，려함량부유15％；이점식핵파렬적내부려함량체도54％，이양함량하강도16％。대우점식공칙발현료동부집중분포재식갱적주위여내부적천층구역，병차식갱내부발현료려형성료근호직각적규칙교차릉주결구。삼고이왕적연구성과，재문장중대점식과정중적저일계렬현상급출료초보적이론해석。
In Cu-Al replacement reaction, SEM, supported by EDS, was used to observe morphology and analyze elemental composition of pitting process caused by chloride in CuSO4 solution.According to EDS results, copper didn't precipitate at pitting nuclear, and oxygen content of the shell of pitting nuclear was about 50%, it was higher than aluminum, which was only 15%.However, oxygen content of the crack of pitting nuclear was 16%, it was lower than aluminum, which was 54%.In terms of pitting holes, copper was found around holes'edge and at shallow layer in holes, and copper didn't exist at the deep part of holes.In addition, a kind of regular prism structure of aluminum was observed in pitting holes, angle between prisms was almost 90°.Referring to existing research results, preliminary explanation was given to thisphenomenon.