Method of manufacturing electronic component for rf applications by sintering

Abstract

Disclosed herein is a method for manufacturing an electronic component comprising a ferrite by sintering. The method comprises the steps of: adding 3 wt% of ammonium alginate to a ferrite to form a mixture, and stirring the mixture while adding water thereto to form a gel; drying the gel at a temperature ranging from 85 ° C to 95 ° C to form a dried material; grinding the dried material to produce a ferrite powder coated with the ammonium alginate; subjecting the ferrite powder to compression molding; and sintering the compression-molded ferrite powder. According to the method, by adding ammonium alginate to the ferrite, the cohesion of the ferrite can be enhanced to facilitate the molding of the ferrite. Also, the magnetic loss tangent of the ferrite can be reduced and the permeability thereof can be increased, thus increasing the efficiency of the ferrite.

1 . A method for manufacturing an electronic component for RF applications comprising a ferrite by sintering, wherein ammonium alginate is added to the ferrite before the ferrite is sintered. 
     
     
         2 . The method of  claim 1 , wherein the ferrite has a spinel structure. 
     
     
         3 . The method of  claim 1 , wherein the ammonium alginate is added to the ferrite in an amount of 3 wt%. 
     
     
         4 . The method of  claim 1 , wherein the ferrite is sintered at a temperature ranging from 600 ° C to 1400 ° C. 
     
     
         5 . A method of manufacturing an electronic component for RF applications by sintering, the method comprising:
 adding 3 wt% of ammonium alginate to a ferrite to form a mixture, and stirring the mixture while adding water thereto to form a gel;   drying the gel at a temperature ranging from 85 ° C to 95 ° C to form a dried material;   grinding the dried material to produce a ferrite powder coated with the ammonium alginate;   subjecting the ferrite powder to compression molding; and   sintering the compression-molded ferrite powder.   
     
     
         6 . The method of  claim 5 , wherein the ferrite is a spinel ferrite having a composition of MXFe(3×X)O 4 , wherein M is at least one of Mg and Co, and X is an integer of 1 or 2. 
     
     
         7 . The method of  claim 5 , wherein the compression-molding operation is carried out by compressing the ferrite powder with a load of 2-6 tons. 
     
     
         8 . The method of  claim 5 , wherein the sintering step operation is carried out at a temperature ranging from 600 ° C. to 1400 ° C.