材料工程2025，Vol.53Issue(9)：91-100,10.DOI:10.11868/j.issn.1001-4381.2023.000372
1050A铝合金导体材料在模拟典型大气环境中的腐蚀行为与导电性能
Corrosion behavior and electrical conductivity of 1050A aluminum alloy conductor materials in simulated typical atmospheric environments
摘要
Abstract
The corrosion behavior and electrical conductivity of 1050A aluminium alloy conduct materials in simulated marine and industrial atmosphere are studied in this paper.Cyclic wet-dry immersion test and mass loss measurement are carried out to investigate the corrosion behavior of 1050A aluminium conduct material.The corrosion morphology of aluminium is observed and analyzed by using ultra-depth field microscopy and optical profilometer.The electrical properties are tested by micro-ohmmeter,conductivity testing meter,and digital bridge,respectively.In addition,the development and variation of corrosion parameters such as corrosion mass loss,corrosion rate,surface roughness,and pit depth and diameter are explored.Under the simulated marine atmospheric environment,it is found that the corrosion mass loss of 1050A aluminium is small and the pitting characteristics are obvious,the maximum corrosion pit depth and diameter can reach 36 μm and 80 μm respectively.However,in the simulated industrial atmospheric environment,the corrosion pits of 1050A aluminium are dispersed and the development of pitting parameters is not obvious,while the corrosion mass loss has the development trend of uniform corrosion.Moreover,the on-resistance and 20℃resistance values of 1050A aluminium conductor parts increase obviously,and the conductivity decreases significantly with the development of corrosion in two typical atmospheric environments.In summary,the corrosion behavior and development law of aluminium conductors in simulated marine and industrial atmosphere are significantly different.The pitting corrosion characteristics of aluminium conductors are obvious,and the conductivity is closely related to the depth of corrosion pits in simulated marine atmosphere.However,the corrosion mass loss of aluminium conductor develops monotonously,and the conductivity has a high correlation with the corrosion mass loss in simulated industrial atmosphere.Therefore,the development trend of electrical conductivity of aluminium conduct materials in marine and industrial atmosphere can be predicted by pit depth and corrosion mass loss parameters respectively.关键词
铝导体材料/腐蚀/干湿周浸/点蚀/导电性能Key words
aluminum conducting material/corrosion/cyclic wet-dry immersion test/pitting corrosion/electrical conductivity分类
矿业与冶金引用本文复制引用
吴亚平,宗立君,樊志彬,田辉..1050A铝合金导体材料在模拟典型大气环境中的腐蚀行为与导电性能[J].材料工程,2025,53(9):91-100,10.基金项目
国网山东省电力公司科技项目(520626220022) （520626220022）
