Method of manufacturing nickel powder, apparatus for manufacturing nickel powder, and crucible for manufacturing nickel powder

A manufacturing method and a manufacturing device technology, which are applied in the field of crucibles for nickel powder manufacturing, and can solve the problems of affecting the characteristics of capacitors and affecting the composition of electronic device materials such as capacitors, etc.

Inactive Publication Date: 2005-10-19
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present inventors have found that when nickel powder mixed with such impurities is used as a conductor paste for forming electrodes of e

Method used

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  • Method of manufacturing nickel powder, apparatus for manufacturing nickel powder, and crucible for manufacturing nickel powder
  • Method of manufacturing nickel powder, apparatus for manufacturing nickel powder, and crucible for manufacturing nickel powder
  • Method of manufacturing nickel powder, apparatus for manufacturing nickel powder, and crucible for manufacturing nickel powder

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Embodiment

[0049] A capacitor of JIS standard C1608JB1A105K was trial-produced, that is, a capacitor with a capacity of 10 μF was obtained with a size of 1.6mm×0.8mm×0.8mm. figure 2 The illustrated internal electrodes 14 , 15 and terminal electrodes 16 , 17 use nickel powder as the base layer, and the dielectric layer 13 uses a barium titanate-based substance as described below. That is, the composition is BaTiO 3 : 95.47 mol%, Y 2 o 3 : 0.57 mol%, MgO: 1.91 mol%, V 2 o 5 : 0.002 mol%, {Ba 0.58 Ca 0.42}SiO 3 : 1.91 mol%, MnO: 0.14 mol% ceramics.

[0050] On the other hand, as the crucible, SiO 2 -Al 2 o 3 -FeO-P 2 o 5 - Substances of the C series. Then, if Figure 4 As shown, the entire surface of the crucible 2 is covered by coating and thermobonding with the substance of the composition used in the above-mentioned dielectric layer 13 . The inner wall 1 a of the reaction furnace 1 is also covered with the same material as the above-mentioned dielectric layer 13 .

[0051...

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Abstract

Provided is a method and apparatus for producing nickel powder with which in the case of melting and vaporizing nickel raw material charged into a crucible with plasma to obtain the nickel powder, the deterioration in the characteristic of electronic parts can be prevented. The nickel in the crucible 2 set in a plasma reaction furnace 1, is melted and vaporized and cooled to obtain the nickel powder with a grain collecting device 12. At least a portion in contact with the nickel on the surface layer in the crucible 2 or the whole body, is covered with a coating layer. In the coating layer, a material composed of a component used for the electronic parts using the nickel powder for electrode or the material composed mainly of this component, is used. Further, the whole crucible is manufactured with the material composed of the component used for electronic parts using the nickel powder for electrode of the material composed mainly of the component. The inner wall or the whole body in the reaction furnace 1 uses the above material, too.

Description

technical field [0001] The present invention relates to a method for producing nickel powder used in electrodes of electronic devices, a device for producing nickel powder, and a crucible for producing nickel powder. Background technique [0002] In recent years, electronic devices such as capacitors have become increasingly thinner and larger in capacity. Correspondingly, ceramic dielectric layers have also tended to be thinner, and the number of electrodes has also tended to increase. In addition, along with the thinning of the dielectric layer, the thinning of the electrode layer is also realized. Specifically, a capacitor having a thickness of a dielectric layer of 2 μm or less and an electrode layer of 1 μm or less has been realized. Moreover, as a material of an electrode, it tends to use inexpensive nickel instead of silver or a silver-palladium alloy (for example, refer patent document 1). When this nickel is used for an electrode, a conductor paste containing nick...

Claims

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Application Information

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IPC IPC(8): B22F9/12B01J12/02B22F9/00B22F9/02F27B14/06F27B14/10F27B14/14H01G4/12H01G4/30
Inventor 小田和彦丸野哲司田中公二三浦秀一高桥诚三浦和也
Owner TDK CORPARATION
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