作　　者： ; ; ; ; ;

机构地区： 东北大学材料与治金学院材料各向异性与织构工程教育部重点实验室

出　　处： 《稀有金属材料与工程》 2013年第8期1552-1557,共6页

摘　　要： 利用二次离子质谱仪对高压电解电容器用高纯铝箔的微量元素进行了分析,研究了微量元素含量及分布对铝箔织构及性能的影响。结果表明:铝箔中Fe、Si、Cu和Pb含量较高,Fe、Cu元素含量直接影响铝箔的电性能,而Si和Pb元素含量的变化,对铝箔的织构和电性能无直接影响。铝箔中微量元素的平均含量,是影响铝箔织构组成与最终电性能的主要因素。而Fe、Cu等微量元素在近表面深度方向上浓度梯度方向的改变和显著波动,可导致在腐蚀发孔过程中微量元素的微观作用机制发生改变,不利于隧道孔的稳定生长,也是影响铝箔最终电性能的又一个重要原因。 The content and the distribution of trace elements in aluminum foils for high voltage electrolytic capacitors were investi- gated by secondary ion mass spectrometer （SIMS） and their effect on the texture and the property of the foils were examined. The results show that the contents ofFe, Si, Cu and Pb are relatively high in the foil. And the contents of trace Fe and Cu have a greater effect on the texture and the electric property of the foils in comparison with those of Si and Pb elements. The average content and the surface enrichment degree of the main trace elements are the main influencing factors for texture composition and the final elec- tric property of the aluminum foils. The variation of near-surface concentration gradient of Fe and Cu along the depth direction is another influencing factor for the electric property of aluminum foils, which will change the resulting mechanism of the trace ele- ments during pit etching, and thus is unfavorable for the stable growth of etched pits.

关 键 词： 高纯铝箔 微量元素 立方织构 腐蚀发孔 电容量

领　　域： [电气工程]