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수정진동자를 이용한 Al의 전기화학적 부식에 관한 연구

Study of Electrochemical Corrosion of Al Using Quartz Crystal

조홍식 이행자 최광재 김종민¹ 김영한 장상목^†

Hong-Sig Cho Haeng-Ja Lee Kwong-Jae Choi Jong-Min Kim¹ Young-Han Kim Sang-Mok Chang^†

동아대학교 공과대학 화학공학과, 부산 604-714 ¹Seiko 첨단기술연구소, Matsudo-shi, Chiba 270-2222

Dept. of Chem. Eng., Dong-A Univ., Pusan 604-714, Korea ¹Advanced Technology Center, SEIKO Instruments Inc., Matsudo-shi, Chiba 270-2222, Japan

smjang@mail.donga.ac.kr

HWAHAK KONGHAK, April 2000, 38(2), 160-165(6), NONE

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Abstract

0.1M NaCl 전해질 용액과 수정진동자를 사용하여 알루미늄 표면의 전기화학적 부식의 동특성을 검토하였다. 정전위법을 사용하여 부식을 진행시킴과 동시에 수정진동자의 공진주파수와 공진저항 그리고 전류 응답을 연속적으로 측정하였다. 또한 표면 형상의 변화를 원자간력 현미경을 사용하여 관찰하였고 표면 성분을 EDX를 사용하여 분석하여, 비교 검토하였다. 실험의 결과, 공진주파수와 공진저항의 동시 측정하여 분석함으로서 부식 과정에 있어서 야기되는 표면 형상 구조의 변화를 유추할 수 있었다.

A quartz crystal analyzer is utilized to monitor the corrosion process of an aluminum surface of a quartz crystal in 0.1M NaCl electrolyte solution. While a constant potential is applied to the cell, the resonant frequency and resonant resistance and response of current are simultaneously measured using the quartz crystal analyzer. In addition, the surface morphology is taken with an atomic force microscopy(AFM) and the element analysis of the surface is conducted using an energy dispersive X-ray spectrometer(EDX). The simultaneous measurement of resonant frequency, resonant resistance and response of current during the corrosion process explains the change of surface structure caused by the corrosion.

Keywords

Quartz Crystal Al Corrosion AFM EDX

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