Tantalum wire used for anode lead of tantalum capacitor and manufacturing method thereof
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United States of America Patent
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Nov 6, 2018
Grant Date -
Feb 4, 2016
app pub date -
Oct 13, 2015
filing date -
Jan 20, 2009
priority date (Note) -
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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.
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