KR880004508A - Polymer bonded metal magnets containing corrosion resistant metal particles - Google Patents

Polymer bonded metal magnets containing corrosion resistant metal particles Download PDF

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KR880004508A
KR880004508A KR870010104A KR870010104A KR880004508A KR 880004508 A KR880004508 A KR 880004508A KR 870010104 A KR870010104 A KR 870010104A KR 870010104 A KR870010104 A KR 870010104A KR 880004508 A KR880004508 A KR 880004508A
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chromium
particles
powder
coating layer
outer coating
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KR870010104A
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엠. 홉스톡 데이비드
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도날드 밀러 셀
미네소타 마이닝 앤드 매뉴 팩츄어링 컴패니
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Publication of KR880004508A publication Critical patent/KR880004508A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0572—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Paints Or Removers (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

내용 없음No content

Description

내부식성금속 입자를 함유하는 중합체결합금속 자석Polymer bonded metal magnets containing corrosion resistant metal particles

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

Claims (22)

하기와 같이 구성되는 것을 특징으로 하는 비자연발화성 영구자기합금분말 : (a)평균 입자크기가 약 0.1 내지 약 1000 미크론인 영구자기 합금입자. 및 (b)외부복층의 크롬함량이 입자의 0.001 내지 5 중량%인 크롬과 산소 화합물로 구성되는 상기 입자상의 박막외부피복층.Non-pyrophoric permanent magnetic alloy powder, comprising: (a) permanent magnetic alloy particles having an average particle size of about 0.1 to about 1000 microns. And (b) the particulate thin film outer coating layer composed of chromium and an oxygen compound having a chromium content of the outer coating layer of 0.001 to 5% by weight of the particles. 제1항에 있어서, 상기 영구자기합금입자는 희토류금속을 포함하는 것을 특징으로 하는 분말.The powder according to claim 1, wherein the permanent magnetic alloy particles include rare earth metals. 제2항에 있어서, 상기 영구자기합금입자는 사마륨-코발트 및 네오디뮴-철-보론으로 이루어진 군에서 선택된 것임을 특징으로 하는 분말.The powder of claim 2, wherein the permanent magnetic alloy particles are selected from the group consisting of samarium-cobalt and neodymium-iron-boron. 제1항에 있어서, 상기 박막외부피복층의 크롬함량은 입자의 약 0.01 중량의 내지 1.0 중량 %인 것을 특징으로 하는 분말.The powder of claim 1, wherein the chromium content of the thin film outer coating layer is about 0.01 wt% to about 1.0 wt% of the particles. 제1항에 있어서, 상기 분말은 화재 또는 폭발되는 일없이 공기중에서 250℃로 가열할 수 있는 충분히 비자연발화성인 것을 특징으로 하는 분말.The powder of claim 1, wherein the powder is sufficiently non-pyrophoric capable of heating to 250 ° C. in air without fire or explosion. 제1항에 있어서, 상기 박막외부피복층은 디크로 메이트 또는 크로 메이트 이온을 함유하는 용액에 상기입자를 노출시킴으로서 형성된 것을 특징으로 하는 분말.The powder according to claim 1, wherein the thin film outer coating layer is formed by exposing the particles to a solution containing dichromate or chromate ions. 제6항에 있어서, 불용성 금속크로메이트염을 형성할 수 있는 가용성금속염이 첨가된 것을 특징으로 하는 분말.The powder according to claim 6, wherein a soluble metal salt capable of forming an insoluble metal chromate salt is added. 제7항에 있어서, 상기 불용성금속 크로메이트염이 아연크로 메이트, 카드뮴크로메이트, 및 납크로 메이트 또는 이들의 염기성형태로 이루어지는 군에서 선택된 것임을 특징으로 하는 분말.8. The powder of claim 7, wherein said insoluble metal chromate salt is selected from the group consisting of zinc chromate, cadmium chromate, and lead chromate or basic forms thereof. 제6항에 있어서, 크롬을 6가 크로메이트 상태에서 3가 크롬상태로 환원시킬수 있는 환원제와 산화크롬, 수산화크롬 또는 수화된 산화크롬을 석출할 수 있는 염기가 첨가된 것을 특징으로 하는 분말.The powder according to claim 6, wherein a reducing agent capable of reducing the chromium from the hexavalent chromate state to the trivalent chromium state and a base capable of depositing chromium oxide, chromium hydroxide or hydrated chromium oxide are added. 하기와 같이 구성되는 것을 특징으로 하는 중합체자기조성물 : (a) 열가소체, 열고정체 및 탄성체로 이루어진 군에서 선택된 결합체 : 및 (b) 영구자기입자와 의부피복층의 크롬 함량이 입자의 0.001 내지 5중량%인 크롬과 산소 화합물로 구성되는 상기 입자상의 박막외부피복층으로 구성되는 비자연발화성 영구자기 합금 분말.A polymer magnetic composition comprising: (a) a binder selected from the group consisting of thermoplastics, thermosets and elastomers; and (b) the chromium content of the permanent magnetic particles and the overcoat layer is 0.001 to 5% by weight of the particles. A non-pyrophoric permanent magnetic alloy powder composed of the particulate thin film outer coating layer composed of% chromium and an oxygen compound. 제10항에 있어서, 상기 영구 자기합금 입자가 회로류금속을 포함하는 것을 특징으로 하는 중합체자기 조성물.The magnetic polymer composition of claim 10, wherein the permanent self-alloy particles comprise a circuit current metal. 제11항에 있어서, 상기 영구자기합금 입자가 사마륨-코발트 및 네오디뮴-철-보론으로 이루어진 군에서 선택된 것임을 특징으로 하는 중합체자기 조성물.12. The polymer magnetic composition of claim 11 wherein the permanent magnetic alloy particles are selected from the group consisting of samarium-cobalt and neodymium-iron-boron. 제10항에 있어서, 상기 박막외부피복층의 크롬함량이 상기 입자의 약0.01 중량 % 내지 1.0 중량 %인 것을 특징으로 하는 중합체자기 조성물.The magnetic polymer composition of claim 10, wherein the chromium content of the thin film outer coating layer is about 0.01 wt% to 1.0 wt% of the particles. 제10항에 있어서, 상기 결합체가 폴리아미드, 폴리페닐렌 설파이드, 에폭시류, 페놀류, 천연고무, 합성고무, 플루오로카아본 및 폴리에스테르로 이루어진군에서 선택된 것임을 특징으로 하는 중합체자기 조성물.The magnetic polymer composition according to claim 10, wherein the binder is selected from the group consisting of polyamide, polyphenylene sulfide, epoxy, phenol, natural rubber, synthetic rubber, fluorocarbon and polyester. 제10항에 있어서, 상기입자의 평균 입자크기는 약 0.1 내지 약 200 미크론인 것을 특징으로 하는 중합체자기 조성물.The magnetic polymer composition of claim 10, wherein the average particle size of the particles is from about 0.1 to about 200 microns. 하기와 같이 구성되는 것을 특징으로 하는 자기입자의 처리방법 : (a) 디크로 메이트 염, 크로 메이트염, 3산화크롬 또는 이들의 혼합물로 이루어진 군에서 선택된 크롬화합물을 함유하는 용액의 존재하에 영구자기 합금을 분쇄하고 b) 용액으로부터 자기입자를 분리하고 c) 60℃ 내지 150℃의 온도에서 자기입자를 건조하여 평균 입자크기가 약 0.1 내지 약 200 미크론이고 외부피복 층의 크롬함량이 입자의 0.001 내지 5중량 %인 크롬과 산소화합물로 구성되는 상기 입자상의 박막외부피복층을 가지는 비 자연발화성 영구 자기 합금분말을 제조한다.A method for treating magnetic particles, comprising: (a) permanent magnetic in the presence of a solution containing a chromium compound selected from the group consisting of dichromate salts, chromate salts, chromium trioxide or mixtures thereof Crushing the alloy and b) separating the magnetic particles from the solution and c) drying the magnetic particles at a temperature of 60 ° C. to 150 ° C., with an average particle size of about 0.1 to about 200 microns and a chromium content of the outer coating layer of 0.001 to A non-pyrophoric permanent magnetic alloy powder having a particulate thin film outer coating layer composed of 5% by weight of chromium and an oxygen compound is prepared. 제16항에 있어서, 불용성금속크로메이트를 형성할 수 있는 금속의 가용성염을 첨가함으로써 상기 용액중의 잔류크롬을 석출하는 단계를 포함하는 것을 특징으로 하는 방법.17. The method of claim 16, comprising depositing residual chromium in the solution by adding a soluble salt of a metal capable of forming an insoluble metal chromate. 제17항에 있어서, 상기 가용성염은 아연, 카드뮴 및 납의 가용성염으로 이루어진 군에서 선택된 것을 특징으로 하는 방법.18. The method of claim 17, wherein the soluble salt is selected from the group consisting of soluble salts of zinc, cadmium and lead. 제16항에 있어서, 3가 크롬을 침전시키는 염기를 첨가함으로써 크롬을 6가 상태에서 3가 상태로 전환시킬 수 있는 용액에 환원제를 첨가하는 단계를 포함하는 것을 특징으로 하는 방법.17. The method of claim 16, comprising adding a reducing agent to a solution capable of converting chromium from a hexavalent state to a trivalent state by adding a base to precipitate trivalent chromium. 열가소성 결합제 및 비자연발화성 영구 자기합금분말로 구성되는 주사주조장치에 사용할 수 있고, 상기 분말은 하기와 같이 구성되는 것을 특징으로 하는 화합물 : a) 평균 입자크기가 약 2 내지 약 200 미크론인 영구자기합금입자. b) 외부 피복층의 크롬함량이 입자의 0.001 내지 5중량 %인 크롬과 산소 화합물로 구성되는 상기 입자상의 박막외부 피복층.A compound which can be used in an injection casting device comprising a thermoplastic binder and a non-pyrophoric permanent self-alloy powder, wherein the powder is composed of: a) permanent magnet with an average particle size of about 2 to about 200 microns Alloy particles. b) The particulate thin film outer coating layer consisting of chromium and an oxygen compound having a chromium content of the outer coating layer of 0.001 to 5% by weight of the particles. 제20항의 화합물로 주조된 영구자석.A permanent magnet cast with the compound of claim 20. 가요성열가소체 또는 탄성체결합제 및 비자연발화성 영구자기 합금분말로 구성되고 상기 분말은 하기와 같이 구성되는 것을 특징으로 하는 가요성자석 : a) 평균 입자크기가 약 0.1 내지 약 50 미크론인 영구자기 합금입자, 및 b) 외부피복층의 크롬함량이 입자의 0.001 내지 5중량 %인 크롬과 산소 화합물로 구성되는 상기 입자상의 박막 외부피복층.A flexible magnet composed of a flexible thermoplastic or elastomer binder and a non-pyrophoric permanent magnetic alloy powder, wherein the powder is constituted as follows: a) Permanent magnetic alloy particles having an average particle size of about 0.1 to about 50 microns. And b) the particulate thin film outer coating layer composed of chromium and an oxygen compound having a chromium content of the outer coating layer of 0.001 to 5% by weight of the particles. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR870010104A 1986-09-12 1987-09-11 Polymer bonded metal magnets containing corrosion resistant metal particles KR880004508A (en)

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CN1007847B (en) * 1984-12-24 1990-05-02 住友特殊金属株式会社 Process for producing magnets having improved corrosion resistance

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