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| Preparation and Properties of 25V-30000μFV/g Tantalum Powder |
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Received:April 15, 2024
Revised:April 26, 2024
Accepted:May 06, 2024
Published Online:July 09, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.08.018 |
| KeyWord:25V-30000 μFV/g tantalum powder; physical and chemical properties; electrical properties; capacitor |
| Author | Institution |
| ZHAO Chunxia |
宁夏东方钽业股份有限公司 宁夏 石嘴山 |
| CHEN Xueqing |
宁夏东方钽业股份有限公司 宁夏 石嘴山 |
| LI Zhongxiang |
宁夏东方钽业股份有限公司 宁夏 石嘴山 |
| SHI Dejun |
宁夏东方钽业股份有限公司 宁夏 石嘴山 |
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| Abstract: |
| The development process and properties of 25V-30000μFV/g tantalum powder were introduced. The physical, chemical and electrical properties of the powder and its verification use in capacitor manufactures were analyzed. The product is a sheet-like tantalum powder produced by ball milling using sodium reduction powder as the raw material, with a larger specific surface area (0.80—0.90 m2/g) and a larger diameter to thickness ratio (3.0—8.0), as well as high pressure and high specific volume characteristics. The wet test shows that the capacity reaches more than 30 000 μFV/g under 100 V forming voltage, and the capacity reaches more than 31 000 μFV/g when produce 63V-3300μF type capacitors, which meets the requirements of product design. |
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