涂层电极箔铝粉堆积结构和化学成分研究  

Study on aluminum powder stacking structure and chemical composition of coated electrode foil

作　　者：萨丽曼 范丰良 董晓红[2] 靳羽晓 Sa Liman;Fan Fengliang;Dong Xiaohong;Jin Yuxiao(Henan Keyuan Electronic Aluminum Foil Co.,Ltd.,Yongcheng 476612;Xinjiang Institute of Engineering,Urumqi 830047,China)

机构地区：[1]河南科源电子铝箔有限公司,永城476612 [2]新疆工程学院,乌鲁木齐830047

出　　处：《铝加工》2023年第4期48-52,共5页Aluminium Fabrication

基　　金：新疆维吾尔自治区自然科学基金资助项目(2022D01B19)。

摘　　要：研究了铝电容器用涂层电极箔的铝粉堆积结构对容量的影响以及堆积铝粉和基层铝箔的成分和纯度标准。涂层箔的比容与铝粉粒径、化成电压成反比,且衰减程度较传统电极箔的蚀孔孔径、化成电压更平缓。在低电压段,传统电极箔的比容较涂层箔比容更有优势;在高压段,涂层箔的比容较传统电极箔的比容优势明显。为实现后续化成处理时化成液以及卷绕为电容器时内部电解液的充分浸润通畅,确保铝介电性能的充分发挥,铝粉堆积结构的选择,除了考虑比容优势,还要兼顾其固有间隙的数量和尺寸,因此优选体心立方堆积结构。涂层电极箔的涂层铝粉与基层铝箔的化学成分以及纯度要求不同于传统电极箔的化学成分及纯度要求,涂层电极箔主要围绕力学强度兼顾漏电流进行成分搭配设计。The paper mainly studied the influence of the aluminum powder stacking structure of the coated electrode foil for alumi⁃num capacitors on the capacity,as well as the composition and purity of the stacked aluminum powder and the base aluminum foil.The capacity of the coated foil is inversely proportional to the size of aluminum powder and forming voltage,and the attenuation is slower than that of the traditional electrode foil.The capacitance of the coated foil in the low voltage section is not as high as that of the traditional electrode foil,but it has obvious advantages in the high voltage section.In order to achieve smooth infiltration of solu⁃tion during subsequent forming or assembly of capacitors,and ensure the full play of the dielectric properties of aluminum powder,the selection of aluminum powder stacking structure should consider the capacity advantage,while taking into account the number and size of its inherent gaps,and optimize the body centered cubic stacking structure.The chemical composition and purity requirements of the coated aluminum powder of the coated electrode foil and the aluminum foil of the base layer are also different from those of the traditional electrode foil.The composition matching design can focus on the mechanical strength and give consideration to the leakage current.

关 键 词：铝粉粒径 体心立方结构 堆积间隙 化学成分 

分 类 号：TM535.1[电气工程—电器] TG146.21[一般工业技术—材料科学与工程]