|
|||||
|
|
| 铝合金剥蚀过程的电化学阻抗谱分析 | |
| 引用本文： | 李劲风,郑子樵,张昭,张鉴清.铝合金剥蚀过程的电化学阻抗谱分析[J].中国腐蚀与防护学报,2005,25(1):48-52. |
| 作者姓名： | 李劲风 郑子樵 张昭 张鉴清 |
| 作者单位： | 1. 中南大学材料科学与工程学院,长沙,410083 2. 浙江大学化学系,杭州,310027 3. 浙江大学化学系,杭州,310027;金属腐蚀与防护国家重点实验室,沈阳,110016 |
| 基金项目： | 国家自然科学基金项目 (5 0 2 710 66)，国家重点基础研究发展规划基金项目 (G19990 65 0 ) |
| 摘 要： | 研究了轧制态及峰时效8090铝—锂合金、拉应力作用下及无应力作用时双级过时效7075铝合金的剥蚀发展过程，测量并拟合了合金发生剥蚀后的电化学阻抗谱。结果表明：发生剥蚀后，合金电化学阻抗谱由高—中频和中—低频容抗弧组成；可从电化学阻抗谱的拟合参数(变化趋势)得到剥蚀的相关信息。如剥蚀发展速度、剥蚀形貌、剥蚀表层是否脱落等． |
| 关 键 词： | 铝合金 剥蚀 电化学阻抗谱 |
| 文章编号： | 1005-4537(2005)01-0048-05 |
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OF Al ALLOYS DURING EXFOLIATION CORROSION |
|
| Li Jinfeng,Zheng Ziqiao,ZHANG Zhao,ZHANG Jianqing.ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OF Al ALLOYS DURING EXFOLIATION CORROSION[J].Journal of Chinese Society For Corrosion and Protection,2005,25(1):48-52. | |
| Authors: | Li Jinfeng Zheng Ziqiao ZHANG Zhao ZHANG Jianqing |
| Affiliation: | LI Jinfeng1,ZHENG Ziqiao1,ZHANG Zhao2,ZHANG Jianqing 2,3 |
| Abstract: | The exfoliation development of 8090 Al-Li alloy and 7075 Al alloy was studied.The electrochemical impedance spectroscopy (EIS) of these alloys in EXCO solution was measured and simulated.At the beginning of immersion,the EIS is comprised by a capacitive arc at high-mediate frequency and an inductive arc at mediate-low frequency.Once exfoliation occurs,two capacitive arcs appear at high-mediate frequency and mediate-low frequency respectively.Some information about exfoliation,such as exfoliation development rate and exfoliation morphology,can be obtained through the simulated EIS data. |
| Keywords: | Al alloys electrochemical impedance spectroscopy (EIS) exfoliation corrosion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |