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本文研究了铝电解电容器用的铝箔于电解浸蚀前的处理工艺方法,电解浸蚀液的组成,电流密度与比电容的关系,以及除氯根的措施等。X线衍射分析表明,目前商售铝箔经热处理后,可获得{100}面的结构。指出低压产品的铝箔其晶粒度以≤4级为佳,热处理后光箔表面的氧化膜厚度不宜大于25(?),在适当的交流电解浸蚀工艺参数下,可使箔的表面形成一层很好的海绵层,从而使铝箔的比电容大幅度增加,制成的低压铝电解电容器的体积可缩小很多。两年来,生产厂使用此工艺生产的腐蚀箔,制成数十种规格低压小型化铝电解电容器,提供整机厂装配电视机、收音机、立体声收录机、录象机及各种仪表。结果表明效果良好,因而获得使用者的欢迎和好评。本工艺具有稳定、节材、节电、效率高等优点。
In this paper, aluminum foil for aluminum electrolytic capacitor before electrolysis etching process, the composition of electrolytic etching solution, the relationship between current density and specific capacitance, and chlorine removal measures. X-ray diffraction analysis shows that the current commercially available aluminum foil after heat treatment, {100} surface structure can be obtained. It is pointed out that the grain size of low-pressure aluminum foil should be less than or equal to 4, the thickness of oxide film on the surface of the light foil after heat treatment should not be more than 25 (?). Under suitable AC electrolytic etching process parameters, Layer of sponge layer is very good, so that a substantial increase in the specific capacitance of aluminum foil, made of low-voltage aluminum electrolytic capacitors can be much smaller size. In the past two years, the production plant used the corrosion foil produced by this process to manufacture dozens of low-voltage miniaturized aluminum electrolytic capacitors, and provided the whole factory with television sets, radios, stereo tape recorders, video recorders and various meters. The results showed good results, which won the user’s welcome and praise. The process has the advantages of stable, material-saving, energy-saving, high efficiency.