The effect of annealing temperature on the corrosion behavior of copper in insulating oil contained corrosion sulfur

被引：0
作者：
Yuan Yuan [1 ]
Zhou Jiang [1 ]
He Xiao [2 ]
Yang Lijun [3 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Yunnan Power Grid Co Ltd, Elect Power Res Inst, Kunming 650217, Peoples R China
[3] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
来源：
2016 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (IEEE CEIDP) | 2016年
关键词：
copper; corrosion sulfur; annealing temperature; special grain boundary; corrosion resistant; DIBENZYL DISULFIDE; PAPER INSULATION; TRANSFORMER OILS; WINDINGS; SULFIDE;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Copper corrosion in transformers is one of the serious problems affecting the life of the transformers. Much work has been done to improve corrosion resistant of copper. Grain boundary engineering (GBE) is an effective method to enhance the property of corrosion resistant by optimization of deformation and heat treatment processes to change the number and distribution of the special grain boundary, thus improving material certain macro performance associated with grain boundaries. In this study, pure copper first cold rolled 35%, then annealed at varied temperature. Then, the evolution of grain sizes and special grain boundaries after the processing and annealing have been particularly analyzed by electron back-scatter diffraction (EBSD). Meanwhile, according to IEC62535 standard, the copper samples with two layers insulating paper were immersed in corrosive oil for 72 hours at 150 degrees C. The corrosion of copper samples was investigated. It shows that annealing temperature affects seriously the number of special grain boundary and the grain size of copper sequentially enhancing the corrosion resistant of copper in insulating oil contained corrosion sulfur.
引用
收藏
页码：911 / 914
页数：4
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