摘要
研究了15 000μF.V/g钽粉在35 V47μF固体钽电容器上的应用,研究了压制密度和烧结温度对产品电性能的影响,并改进被膜工艺,研究了在硝酸锰溶液中添加硝酸铵对产品电性能的影响。实验结果表明15 000μFV/g钽粉的最佳压制密度为5.8 g/cm3,最佳烧结温度为1 660℃,制备的钽阳极块比容为13 500μFV/g,产品的漏电流系数为3.5×10-4μA/μF.V,tanδ为3.5%,被膜过程中加入硝酸铵有效降低产品漏电流,提高了产品电性能的一致性。关键词:固体钽电容器;压制密度;烧结温度;
35 V 47 μF solid tantalum electrolytical capacitor was fabricated by using 15 000 μF·V/g tantalum powder.The effect of pressing density and sintering temperature on the electrical characters were investigated.The maganising process was changed and ammonium nitrate was used as a additive in manganese nitrate solution,the electrical performance of the products was also investigated.The results show that the best pressing density and sintering temperature is 5.8 g/cm^3 and 1 660 ℃ respectively.The tantalum anode has a special capacity of 13 500 μFV/g.The leakage current factor and tanδ of the product is 3.5×10^-4 μA/μF·V and 3.5%.When the ammonium nitrate was added in maganising process,the leakage current drops and the accordance of the porducts＇ elecrical performance becomes better.
出处
《电子工艺技术》
2008年第2期98-101,共4页
Electronics Process Technology
关键词
固体钽电容器
压制密度
烧结温度
电性能
Solid-electrolytical tantalum capacitor
Pressing density
Sintering temperature
Electrical performance
