JP2018107446A - 希土類永久磁石材料及びその製造方法 - Google Patents
希土類永久磁石材料及びその製造方法 Download PDFInfo
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 title claims abstract description 48
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 7
- 238000010791 quenching Methods 0.000 claims description 61
- 230000000171 quenching effect Effects 0.000 claims description 58
- 239000000843 powder Substances 0.000 claims description 33
- 239000011812 mixed powder Substances 0.000 claims description 26
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000010298 pulverizing process Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 6
- 238000007731 hot pressing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- -1 rare earth fluoride Chemical class 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 101000619552 Homo sapiens Prion-like protein doppel Proteins 0.000 description 1
- 102100022209 Prion-like protein doppel Human genes 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005324 grain boundary diffusion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- 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
-
- B22F1/0003—
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- H01F1/0576—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 pressed, e.g. hot working
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Powder Metallurgy (AREA)
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Abstract
【解決手段】希土類永久磁石材料を形成するための原料は、主相がRxFe100-x-yMyBz(式中、RはNd又はPrNdであり、27≦x≦34、0.3≦y≦5、0.7≦z≦1.1)であるA成分と、主相がYaFe100-a-b-cMbBc(式中、25≦a≦30、0≦b≦1.5、1.2≦c≦3、MはAl、Co、Cu、Gaから選択される1種又は複数種)であるB成分とを含む。上記各元素の含有量はすべて重量含有率である。該希土類永久磁石材料は、Yを含有するB成分と通常のNd(Pr)FeB希土類永久磁石材料とを混合して得られる希土類永久磁石材料の温度係数がより一層低く、耐熱性がより優れ、且つ重希土類元素を含有しないため、コストが比較的低い。
【選択図】図1
Description
Claims (10)
- 希土類永久磁石材料を形成するための原料は、
主相がRxFe100-x-yMyBz(式中、RはNd又はPrNdであり、27≦x≦34、0.3≦y≦5、0.7≦z≦1.1)であるA成分と、主相がYaFe100-a-b-cMbBc(式中、25≦a≦30、0≦b≦1.5、1.2≦c≦3、MはAl、Co、Cu、Gaから選択される1種又は複数種)であるB成分とを含み、前記各元素の含有量はすべて重量含有率であることを特徴とする希土類永久磁石材料。 - 前記A成分と前記B成分との重量比が3〜5:1であることを特徴とする請求項1に記載の希土類永久磁石材料。
- 主相がRxFe100-x-yMyBzであるA成分の急冷リボンA及び主相がYaFe100-a-b-cMbBcであるB成分の急冷リボンBを製造するステップS1と(式中、RはNd又はPrNdであり、27≦x≦34、0.3≦y≦5、0.7≦z≦1.1、25≦a≦30、0≦b≦1.5、1.2≦c≦3、MはAl、Co、Cu、Gaから選択される1種又は複数種であり、前記各元素の含有量はすべて重量含有率である)、
前記急冷リボンA及び前記急冷リボンBを粉砕してから混合し、混合粉末を得るステップS2と、
前記混合粉末を熱処理して前記希土類永久磁石材料を得るステップS3と、を含むことを特徴とする希土類永久磁石材料の製造方法。 - 前記急冷リボンAと前記急冷リボンBとの重量比が3〜5:1であることを特徴とする請求項3に記載の製造方法。
- 前記急冷リボンA及び前記急冷リボンBの厚さはそれぞれ独立して10〜150μmに制御し、好ましくは前記ステップS1において、前記急冷リボンAを製造する第1のロール速度が、前記急冷リボンBを製造する第2のロール速度よりも小さいことを特徴とする請求項3に記載の製造方法。
- 前記第1のロール速度及び前記第2のロール速度が15〜55m/sであり、好ましくは前記第2のロール速度と前記第1のロール速度との比が1.1〜1.6:1であることを特徴とする請求項5に記載の製造方法。
- 前記ステップS1において、前記急冷リボンAを製造する原料Aの融点より100〜300℃高い温度範囲で前記原料Aを溶融し、前記急冷リボンBを製造する原料Bの融点より100〜300℃高い温度範囲で前記原料Bを溶融することを特徴とする請求項3に記載の製造方法。
- 前記ステップS2は、
前記急冷リボンA及び前記急冷リボンBを粉砕して、粉末A及び粉末Bを得、好ましくは前記粉末A及び前記粉末Bの平均粒子径が100〜250μmであること、及び、
前記粉末A及び前記粉末Bを混合して、前記混合粉末を得ることを含むことを特徴とする請求項3に記載の製造方法。 - 前記ステップS3は、450℃以上800℃未満の温度で前記混合粉末を一方向に圧縮する工程を含むことを特徴とする請求項3に記載の製造方法。
- 前記ステップS3は、
前記混合粉末をホットプレスして、磁石を得、前記ホットプレスの温度が好ましくは650〜750℃であり、圧力が好ましくは100〜300MPaであること、及び、
前記磁石を熱変形させ、前記希土類永久磁石材料を得、前記熱変形の温度が好ましくは750〜900℃であり、圧力が好ましくは100〜200MPaであり、熱変形速度が好ましくは0.1〜0.8mm/sであることを含むことを特徴とする請求項8に記載の製造方法。
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CN113620701A (zh) * | 2021-09-29 | 2021-11-09 | 海安南京大学高新技术研究院 | 一种超细晶耐高温高频锰锌铁氧体制备方法 |
CN113724956A (zh) * | 2021-08-27 | 2021-11-30 | 安徽吉华新材料有限公司 | 一种双主相稀土永磁材料及其制备方法 |
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CN113724956B (zh) * | 2021-08-27 | 2023-11-24 | 安徽吉华新材料有限公司 | 一种双主相稀土永磁材料及其制备方法 |
CN113620701A (zh) * | 2021-09-29 | 2021-11-09 | 海安南京大学高新技术研究院 | 一种超细晶耐高温高频锰锌铁氧体制备方法 |
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