KR970043268A - Surface treatment method of magnetic metal powder using stearic acid - Google Patents

Surface treatment method of magnetic metal powder using stearic acid Download PDF

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Publication number
KR970043268A
KR970043268A KR1019950048676A KR19950048676A KR970043268A KR 970043268 A KR970043268 A KR 970043268A KR 1019950048676 A KR1019950048676 A KR 1019950048676A KR 19950048676 A KR19950048676 A KR 19950048676A KR 970043268 A KR970043268 A KR 970043268A
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KR
South Korea
Prior art keywords
magnetic metal
metal powder
surface treatment
treatment method
stearic acid
Prior art date
Application number
KR1019950048676A
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Korean (ko)
Other versions
KR100340489B1 (en
Inventor
김병원
변태봉
손진군
김대영
Original Assignee
김종진
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
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Application filed by 김종진, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소 filed Critical 김종진
Priority to KR1019950048676A priority Critical patent/KR100340489B1/en
Publication of KR970043268A publication Critical patent/KR970043268A/en
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Publication of KR100340489B1 publication Critical patent/KR100340489B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/712—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the surface treatment or coating of magnetic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal

Landscapes

  • Magnetic Record Carriers (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

본 발명은 오디오, 비디오 등의 자기기록매체에 사용되는 자성금속분말의 표면처리 방법에 관한 것으로, 표면처리되어야 할 자성금속분말의 전체 중량에 대하여 적정량의 스테아릭산을 유기용매에 녹인 용액에 자성금속분말을 침적하여 표면처리하므로서, 내산화성이 우수한 자성금속분말을 얻을 수 있는 표면처리방법을 제공하고자 하는데, 그 목적이 있다. 상기한 목적을 달성하기 위한 본 발명은 자성금속분말의 내산화성을 향상시키기 위하여 그 표면에 유기물 피막을 형성시키는 표면처리방법에 있어서, 상기 자성금속분말의 전체중량에 대하여 0.5-10.0중량%의 스테아릭산을 유기용매에 용해시킨 후, 여기에 자성금속분말을 침적하여 그 표면에 유기물 피막을 형성시킨 다음, 유기용매를 완전히 증발시키는 것을 포함하여 이루어지는 스테아릭산을 이용한 자성금속분말의 표면처리방법에 관한 것을 그 요지로 한다.The present invention relates to a surface treatment method of a magnetic metal powder used in a magnetic recording medium such as audio and video, wherein the magnetic metal is dissolved in a solution in which an appropriate amount of stearic acid is dissolved in an organic solvent based on the total weight of the magnetic metal powder to be surface treated. An object of the present invention is to provide a surface treatment method in which magnetic metal powder having excellent oxidation resistance can be obtained by depositing and surface-treating powder. The present invention for achieving the above object is a surface treatment method for forming an organic film on the surface in order to improve the oxidation resistance of the magnetic metal powder, the stear of 0.5-10.0% by weight relative to the total weight of the magnetic metal powder After dissolving ric acid in an organic solvent, a magnetic metal powder is deposited thereon to form an organic film on the surface thereof, and then the surface treatment method of the magnetic metal powder using stearic acid comprising evaporating the organic solvent completely. The point is that.

Description

스테아릭산을 이용한 자성금속 분말의 표면처리방법Surface treatment method of magnetic metal powder using stearic acid

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (2)

자성금속분말의 내산화성을 향상시키기 위하여 그 표면에 유기물 피막을 형성시키는 표면처리방법에 있어서, 상기 자성금속분말의 전체중량에 대하여 0.5-10.0중량%의 스테아릭산을 유기용매에 용해시킨 후, 여기에 자성금속분말을 침적하여 그 표면에 유기물 피막을 형성시킨 다음, 유기용매를 완전히 증발시키는 것을 포함하여 이루어짐을 특징으로 하는 스테아릭산을 이용한 자성금속분말의 표면처리방법.In the surface treatment method of forming an organic film on the surface in order to improve the oxidation resistance of the magnetic metal powder, after dissolving 0.5-10.0% by weight of stearic acid in an organic solvent relative to the total weight of the magnetic metal powder, A method of surface treatment of magnetic metal powder using stearic acid, comprising: depositing a magnetic metal powder on an organic film to form an organic film on the surface thereof, and then completely evaporating the organic solvent. 제1항에 있어서, 상기 유기용매는 알코올, 롤루엔 및 벤벤 중 선택된 1종인 것을 특징으로 하는 스테아릭산을 이용한 자성금속분말의 표면처리방법.The surface treatment method of magnetic metal powder using stearic acid according to claim 1, wherein the organic solvent is one selected from alcohol, roluene and benbene.
KR1019950048676A 1995-12-12 1995-12-12 Surface treatment method of magnetic metal powder using stearic acid KR100340489B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950048676A KR100340489B1 (en) 1995-12-12 1995-12-12 Surface treatment method of magnetic metal powder using stearic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950048676A KR100340489B1 (en) 1995-12-12 1995-12-12 Surface treatment method of magnetic metal powder using stearic acid

Publications (2)

Publication Number Publication Date
KR970043268A true KR970043268A (en) 1997-07-26
KR100340489B1 KR100340489B1 (en) 2002-11-07

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KR1019950048676A KR100340489B1 (en) 1995-12-12 1995-12-12 Surface treatment method of magnetic metal powder using stearic acid

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Publication number Publication date
KR100340489B1 (en) 2002-11-07

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