국부적 표면 분석을 통한 펄스 전기화학 폴리싱 효과에 관한 연구

Abstract

Pulse electrochemical polishing(PECP) has been used to improve the mechanical properties, such as surface roughness and corrosion resistance, of conductive metallic materials. PECP can provide a smooth, bright, reflective and deburred surface that exhibits superior corrosions. For measurements of surface change after modifications, we performed three-dimensional(3D)configuration analysis, using atomic force microscopy(AFM), and hydrophobic and hydrophilic analyses, with a contact angle meter. Scanning electron microscopy (SEM) was used to observe surface characteristics, and Auger electron spectroscopy (AES) was used to analyze the metallurgical composition and thickness of the passive file. The aim of this work is to determine the tendencies of PECP stainless steel in terms of current density, polishing time, electrode gap, frequency, pulse time And effect on the PECP of hydrogen remove, antimicrobial activity, surface roughness, corrosion resistance, detergency. In addition, The surface of the poly methyl methacrylate(PMMA) and polycarbonate (PC) was treated with plasma and fluorocarbon resin. And hydrophobic and hydrophilic analyses, with a contact angle meter.