平面接触型铜铝过渡设备线夹的大气腐蚀行为

doi:10.3969/j.issn.1000－7229.2014.04.011

电力建设 ›› 2014, Vol. 35 ›› Issue (4): 65-69.doi: 10.3969/j.issn.1000－7229.2014.04.011

平面接触型铜铝过渡设备线夹的大气腐蚀行为

汤晓磊1，陈国宏2，刘俊建2，王家庆2，汤文明1

1.合肥工业大学材料科学与工程学院，合肥市 230009；2. 国网安徽省电力公司电力科学研究院，合肥市 230601

出版日期:2014-04-01
作者简介:汤晓磊（1989），男，硕士研究生，主要研究方向为大气腐蚀和电化学; 陈国宏（1968），男，硕士，高级工程师，主要研究方向是电站金属材料监督; 刘俊建（1985），男，硕士，主要研究方向是电站金属材料监督; 王家庆（1984），男，硕士，主要研究方向是电站金属材料监督; 汤文明（1969），男，教授，主要研究方向是材料及器件的失效分析及评价，E-mail：wmtang69@126.com。
基金资助:
国家电网公司科技项目（2012QTXM0751）。

Atmospheric Corrosion Behavior of Cu/Al Plane Contact Type Terminal Connectors

TANG Xiaolei1, CHEN Guohong2, LIU Junjian2, WANG Jiaqing2, TANG Wenming1

1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China； 2. Electric Power Research Institute , State Grid Anhui Electric Power Corporation, Hefei 230601, China

Online:2014-04-01

摘要/Abstract

摘要：

为了解铜铝过渡设备线夹在工业大气污染环境下的运行状况，采用次亚硫酸钠+氯化钠水溶液盐雾试验，模拟研究了铜铝过渡设备线夹的大气腐蚀行为，探讨了大气腐蚀对线夹电学性能的影响。结果表明，铜铝过渡设备线夹大气腐蚀产物主要由铝、锡、铅的硫酸盐及水溶性氯化物组成。腐蚀初期，主要以氯离子对铝/锡铅钎料界面铝板表面氧化膜的点蚀为主；腐蚀后期，主要以次亚硫酸根对铝/锡铅钎料界面两侧的整体腐蚀为主，直至沿此界面裂开。腐蚀初期，铜铝过渡设备线夹的电阻率变化不大；腐蚀2天后，其电阻率大幅上升。研究结果对于线夹运行管理具有参考意义。

关键词: 铜铝过渡设备线夹, 大气腐蚀, 腐蚀产物, 腐蚀机理

Abstract:

In order to evaluate the service condition of Cu/Al terminal connector under industrial air pollution environment, the NaCl+NaHSO3 salt fog spray experiment was carried out to study the atmospheric corrosion behavior of the Cu/Al terminal connector, and the effect of the atmospheric corrosion on the electrical properties of the terminal connector was investigated. The results show that the corrosion products of the terminal connector are mainly composed of Al, Sn and Pb sulfates and water-soluble chlorides. In the initial stage of corrosion, pitting corrosion takes place on the Al oxide film at the Al/Sn-Pb solder interface due to Cl-ions. In the late stage of corrosion, uniform corrosion takes place on the both sides of the Al/Sn-Pb solder interface due to the HSO3-ions, which even results in the fracture of the terminal connector along the Al/Sn-Pb alloy interface, as the corrosion time increased. Moreover, the electrical resistivity of the Cu/Al terminal connector increases slowly in the initial corrosion stage and increases rapidly when the corrosion time is increased more than 2 days. These research results have reference significance to the operation management of the Cu/Al terminal connectors.

Key words: Cu/Al terminal connector, atmospheric corrosion, corrosion product, corrosion mechanism

汤晓磊，陈国宏，刘俊建，王家庆，汤文明. 平面接触型铜铝过渡设备线夹的大气腐蚀行为[J]. 电力建设, 2014, 35(4): 65-69.

TANG Xiaolei, CHEN Guohong, LIU Junjian, WANG Jiaqing, TANG Wenming. Atmospheric Corrosion Behavior of Cu/Al Plane Contact Type Terminal Connectors[J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(4): 65-69.

参考文献

［1］ GB/T 5075—2001 电力金具名词术语［S］. 北京:中国标准出版社,2001.

［2］宋卓,郭军科,郭锦龙. 环境对电网材料的腐蚀影响分析及评价［J］. 山西电力,2008（5）:7-9.

［3］王凤平,张学元,杜元龙. 大气腐蚀研究动态与进展［J］. 腐蚀科学与防护技术,2000,12（2）:104-108.

［4］Wang Z Y, Ma T, Han W, et al. Corrosion behavior on aluminum alloy LY12 in simulated atmospheric corrosion process ［J］. Transactions of Nonferrous Metals Society of China,2007,17（2）:326-334.

［5］张建堃,陈国宏,王家庆,等. 钢芯铝绞导线大气腐蚀产物层的结构及腐蚀机理［J］. 中国有色金属学报,2011,21（2）:411-417.

［6］Fuente D D, Otero-Huerta E, Morcillo M. Studies of long-term weathering of aluminum in the atmosphere ［J］. Corrosion Science,2007,49（7）:3134-3148.

［7］Sun S Q, Zheng Q F, Li D F, et al. Long-term atmospheric corrosion behaviour of aluminium alloys 2024 and 7075 in urban, coastal and industrial environments［J］. Corrosion Science,2009,51（4）:719-727.

［8］Vera R, Delgado D, Rosales B M. Effect of atmospheric pollutants on the corrosion of high power electrical conductors: Part 1. aluminum and AA6201 alloy ［J］. Corrosion Science,2006,48（10）:2882-2900.

［9］Vera R, Delgado D, Rosales B M. Effect of atmospheric pollutants on the corrosion of high power electrical conductors:Part 2. pure copper ［J］. Corrosion Science,2007,49（5）:2329-2350.

［10］杨南培. Cu/Al设备线夹超声波浸锡与钎焊工艺［J］. 焊接技术,2011,40（11）:32-34.

［11］GB/T 2423.17—2008 电工电子产品环境试验第2部分:试验方法-试验Ka:盐雾［S］. 北京:中国标准出版社,2008.

［12］Szklarska-Smialowska Z. Pitting corrosion of aluminum ［J］. Corrosion Science,1999,41（9）:1743-1767.

［13］Graedel T E. Corrosion mechanisms for aluminum exposed to the atmosphere ［J］. Journal of the Electrochemical Society,1989,136（4）:204-212.

［14］曹楚南. 腐蚀电化学原理［M］. 北京:化学工业出版社,2008:258-267.

［15］Leygraf C, Graedel T. 大气腐蚀［M］. 韩恩厚,译. 北京:化学工业出版社,2005:201-209.

［16］Graedel T E. Chemical mechanisms for the atmospheric corrosion of lead ［J］. Journal of the Electrochemical Society,1994,141（4）:922-927.

[1]	陈国宏，王家庆，张建堃，王煦，张涛汤文明. 工业大气腐蚀条件下钢芯铝绞线的微动腐蚀特性研究[J]. 电力建设, 2011, 32(5): 21-25.
[2]	姬鄂豫,姚杰新 . 电厂供水管线腐蚀机理与防护[J]. 电力建设, 2007, 28(11): 53-56.
[3]	默增禄,程志云 . 输电线路杆塔的腐蚀与防治对策[J]. 电力建设, 2004, 25(1): 22-0.
[4]	黄聪,钟华洁, . 海滨电厂空间钢结构的防腐[J]. 电力建设, 2000, 21(7): 0-0.
[5]	陈红菊,陈文彤,孙艳华 . 火电厂锅炉水冷壁热腐蚀机理的研究现状[J]. 电力建设, 2000, 21(2): 0-0.

平面接触型铜铝过渡设备线夹的大气腐蚀行为

Atmospheric Corrosion Behavior of Cu/Al Plane Contact Type Terminal Connectors

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价