Tantalum wire used for anode lead of tantalum capacitor and manufacturing method thereof
US10121597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jul 3, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49204
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a tantalum wire for anode lead of tantalum capacitors, characterized in that the cross section of the tantalum wire is approximate rectangular or regular rectangular. The present invention also relates to a process for manufacturing the tantalum wire, comprising the steps of: providing feedstock tantalum wire; subjecting the feedstock tantalum wire to heat treatment; subjecting the heat treated tantalum wire to surface pretreatment to form an oxide membrane on the surface-pretreated tantalum wire; rolling the surface-pretreated tantalum wire by lubricating with lubricant oil to make the cross section of the rolled tantalum wire being approximate rectangular or regular rectangular; subjecting the tantalum wire to final annealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.