一种铝箔针孔产生的原因及其改善措施  

Cause of pinhole in aluminum foil and improvement measures

作　　者：贺有为 宋盼 万泽全 周然 杨玉芳 HE You-wei;SONG Pan;WAN Ze-quan;ZHOU Ran;YANG Yu-fang(Yong Jie New Material Co.Ltd.,Hangzhou 311222,China)

机构地区：[1]永杰新材料股份有限公司,浙江杭州311222

出　　处：《轻合金加工技术》2021年第6期35-39,共5页Light Alloy Fabrication Technology

摘　　要：对某铝厂轧制铝箔针孔缺陷进行扫描电镜分析。结果表明,此类针孔缺陷处存在碳化铝。通过假设检验法及碳硫分析仪检测发现,针孔数量密度与熔铸扁锭的铝熔体表层氧化膜中的碳含量存在显著相关性。进一步研究表明,氧化膜中的碳含量与电解铝过程中的电解质、阳极质量及电解质中氧化铝浓度等因素有关。针对影响因素,采取改进措施,解决了针孔问题。Scanning electron microscope(SEM)was used to analyze the pinhole defects of rolled aluminum foil produced by an aluminum plant.The results show that aluminum carbide exists in the pinhole defects.Through hypothesis test and carbon sulfur analyzer,it is found that there is a significant correlation between the number density of pinholes and the carbon content in the oxide film on the surface of molten aluminum.Further studies show that the carbon content in the oxide film is related to the electrolyte,anode quality and alumina concentration in the electrolysis process.In view of the influencing factors,improved measures are formulated to solve the pinhole problem.

关 键 词：铝箔 针孔 碳硫分析仪 改善措施 

分 类 号：TG146.21[一般工业技术—材料科学与工程]