Ordered pore array anode tantalum foil for tantalum capacitors and preparation method thereof

A technology of tantalum capacitors and hole arrays, which is applied in the field of ordered hole array anode tantalum foil and its preparation, can solve the problems of increasing surface area, thin products are easy to break, and difficult to form, so as to increase surface area, save preparation time, and improve effective contact area effect

Inactive Publication Date: 2017-06-30
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides an ordered pore array anode tantalum foil for tantalum capacitors and its preparation method, aiming to form uniformly distributed ordered The hole array can effectively increase the surface area and solve the problem that the thin products produced by the pressing process are easy to break and difficult to form.

Method used

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  • Ordered pore array anode tantalum foil for tantalum capacitors and preparation method thereof
  • Ordered pore array anode tantalum foil for tantalum capacitors and preparation method thereof
  • Ordered pore array anode tantalum foil for tantalum capacitors and preparation method thereof

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Embodiment 1

[0021] The ordered hole array anode tantalum foil of this embodiment includes a tantalum sheet with a sheet structure, and an ordered hole array is integrally formed on the upper surface of the tantalum sheet. Its preparation method is as follows:

[0022] Take a tantalum sheet with a thickness of 150 μm, clean it with alcohol to remove oil and dust on the surface of the tantalum sheet; then place the tantalum sheet on the optical table, and use a fixture to position and clamp it; finally adjust the laser parameters and spot diameter to control the laser beam on the tantalum sheet. The point scanning process is performed on the surface of the tantalum sheet, that is, an ordered hole array structure is integrated on the surface of the tantalum sheet. When point scanning the surface of the tantalum sheet, the energy range of the laser is adjusted to 25w, the scanning speed is 800mm / s, the spot diameter is 50μm, and the point spacing is 80μm. The scanning area is smaller than th...

Embodiment 2

[0025] The ordered pore array anode tantalum foil of this embodiment and its preparation method are the same as those in Example 1, except that the area of ​​the ordered pore array is equal to the area of ​​the upper surface of the tantalum sheet.

Embodiment 3

[0027] The ordered pore array anode tantalum foil and its preparation method in this embodiment are the same as those in Example 1, except that the ordered pore array structure is formed on both the upper and lower surfaces of the tantalum sheet.

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Abstract

The invention provides an ordered pore array anode tantalum foil for tantalum capacitors and a preparation method thereof. Tantalum sheets with different thickness as a main material are irradiated with high-energy laser, and an ordered pore array in uniform distribution is obtained very simply on the surface of tantalum. The surface area is increased greatly, and the capacity of tantalum capacitors prepared eventually will be greatly improved. The anode tantalum foil of the invention can be made into any shape such as sheet and coil, and better satisfies the requirement for thin and high-capacity components in modern times.

Description

technical field [0001] The invention relates to an ordered hole array anode tantalum foil for a tantalum capacitor and a preparation method thereof, belonging to the technical field of manufacturing solid tantalum capacitors. Background technique [0002] Tantalum capacitors are widely used in communications, computers, automotive electronics, automatic control devices, electronic measuring instruments and other fields due to their high reliability, low leakage current, and stable performance. With the miniaturization, thinning, intelligence and low cost requirements of various electronic instruments, tantalum capacitors also need to develop in the direction of miniaturization, chip type and high performance. [0003] Traditional tantalum capacitors are widely used in production processes such as tantalum particle compression molding and high-temperature sintering. The size of the porous anode produced by this process is all above 0.5 mm. In order to produce more miniaturiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/048H01G9/15
CPCH01G9/048H01G9/15
Inventor 王振洋张淑东李年张忠平赵婷婷
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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