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Method for producing soft magnetic ferrite powder, and method for making laminated chip inducer

A manufacturing method and ferrite technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic objects, magnetic materials, etc., can solve problems such as not raised

Inactive Publication Date: 2004-08-18
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, no method for sintering at low temperature without

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  • Method for producing soft magnetic ferrite powder, and method for making laminated chip inducer
  • Method for producing soft magnetic ferrite powder, and method for making laminated chip inducer
  • Method for producing soft magnetic ferrite powder, and method for making laminated chip inducer

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Abstract

Provided are a method for preparing an Ni-Cu-Zn ferrite powder having excellent sinterability at a lower temperature, and a method for producing a laminated chip inductor from the above ferrite powder. The method for preparing the ferrite powder is a method for the preparation of a soft magnetic ferrite powder composed of Fe, Ni, Cu and Zn as main components, and comprises the step of allowing an organic additive to be present in a slurry containing a calcined product of a starting powder and water, wherein the organic additive is an organic compound having a hydroxyl group and a carboxyl group or a neutralization salt or lactone thereof, or the organic additive is an organic compound having a hydroxymethylcarbonyl group, an organic compound having an enol type hydroxyl group dissociable as an acid or a salt thereof.

Description

technical field [0001] The present invention relates to a method of manufacturing low-temperature sinterable soft magnetic ferrite powder and a method of manufacturing a laminated chip inductor using the soft magnetic ferrite powder manufactured by the method. Background technique [0002] In recent years, the miniaturization and weight reduction technology of various electronic devices has progressed amazingly, and at the same time, the surface mounting of various parts is rapidly advancing. In particular, the integration of inductor elements, magnets, and coils, and the use of so-called chip inductors are increasing, and their performance is expected to be improved. [0003] In chip inductors, Ni-Cu-Zn ferrite, an oxide magnetic material, is generally used as the magnet, and Ag or Ag-Pd alloy is generally used as the conductor for the coil. [0004] When manufacturing chip inductors, firstly, raw material compounds containing Fe, Ni, Cu, and Zn are mixed with a ball mill ...

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Application Information

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IPC IPC(8): H01F1/12B32B18/00C04B35/26H01F1/34H01F41/02
CPCH01F1/344H01F41/0233C04B35/265B32B18/00C04B35/63464C04B2237/123C04B2237/124H01F1/12
Inventor 原田浩
Owner TDK CORPARATION