The Impedance Studies of Surface Treated AZ61 Magnesium

• Main Authors: Wen-Chung Tsai, 蔡文忠
• Other Authors: Wen-Ching Say
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/zj78h3

碩士 === 國立臺北科技大學 === 材料及資源工程系研究所 === 99 === Magnesium alloy A61 has been used in 3C (Computer, Communication, and Consumption Electronics Productions) products because of its high strength to weight ratios, anti-electromagnetic field properties and high thermal conductivity. However, these alloys are chemically active and exhibit inferior corrosion resistance, which has been limited to their practical application. Due to the hazardous pollution environmentally from hexa-valent chromium ion, the non-chromates of surface treatment on AZ61method were proposed in this study. The electrochemical characteristics of treated specimens were elucidated by AC impedance methods. Electrochemical impedance spectroscopy data were obtained from Solartron equipments with electrochemical interface and frequency response analyzer, which covered frequency range up to 106 Hz of 10 mV rms signal amplitude.