RARE EARTH SINTERED MAGNET
SOLUTION: There is provided a rare earth sintered magnet comprising R (R is one or more elements selected from rare earth elements, invariably including Nd), T (T is one or more elements from iron group elements, invariably including Fe ), X (X is one or two elements selected from B and C, invariabl...
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Format | Patent |
Language | English Japanese |
Published |
10.06.2021
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Abstract | SOLUTION: There is provided a rare earth sintered magnet comprising R (R is one or more elements selected from rare earth elements, invariably including Nd), T (T is one or more elements from iron group elements, invariably including Fe ), X (X is one or two elements selected from B and C, invariably including B), M1 (M1 is one or more elements selected from Al, Si, Cr, Mn, Cu, Zn, Ga, Ge, Mo, Sn, W, Pb and Bi), O of 0.1 mass% or less, N of 0.05 mass% or less, and C of 0.07 mass% or less, wherein the rare earth sintered magnet has an average crystal grain diameter of 4.0 μm or less, and a following relational expression (1) is satisfied: 0.26×D+97≤Or≤0.26×D+99 (1), where its orientation degree is Or[%] and the average crystal grain diameter is D[μm].EFFECT: With a rare earth sintered magnet of the present invention, such superior magnetic characteristics that high Br and high HcJ are both achieved can be obtained.SELECTED DRAWING: None
【解決手段】R(Rは希土類元素から選ばれる1種以上の元素であり、Ndを必須とする。)、T(Tは鉄族元素から選ばれる1種以上で、Feは必須)、X(XはB、Cから選ばれる1種又は2種で、Bは必須)、M1(M1はAl、Si、Cr、Mn、Cu、Zn、Ga、Ge、Mo、Sn、W、Pb、Biから選ばれる1種以上)、0.1質量%以下のO、0.05質量%以下のN、0.07質量%以下のCを含み、平均結晶粒径が4.0μm以下であり、かつ配向度をOr[%]、平均結晶粒径をD[μm]とした場合に、次の関係式(1)0.26×D+97≦Or≦0.26×D+99 ・・・(1)を満たすことを特徴とする希土類焼結磁石を提供する。【効果】本発明の希土類焼結磁石によれば、高いBrと高いHcJを両立した優れた磁気特性を得ることができる。【選択図】なし |
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AbstractList | SOLUTION: There is provided a rare earth sintered magnet comprising R (R is one or more elements selected from rare earth elements, invariably including Nd), T (T is one or more elements from iron group elements, invariably including Fe ), X (X is one or two elements selected from B and C, invariably including B), M1 (M1 is one or more elements selected from Al, Si, Cr, Mn, Cu, Zn, Ga, Ge, Mo, Sn, W, Pb and Bi), O of 0.1 mass% or less, N of 0.05 mass% or less, and C of 0.07 mass% or less, wherein the rare earth sintered magnet has an average crystal grain diameter of 4.0 μm or less, and a following relational expression (1) is satisfied: 0.26×D+97≤Or≤0.26×D+99 (1), where its orientation degree is Or[%] and the average crystal grain diameter is D[μm].EFFECT: With a rare earth sintered magnet of the present invention, such superior magnetic characteristics that high Br and high HcJ are both achieved can be obtained.SELECTED DRAWING: None
【解決手段】R(Rは希土類元素から選ばれる1種以上の元素であり、Ndを必須とする。)、T(Tは鉄族元素から選ばれる1種以上で、Feは必須)、X(XはB、Cから選ばれる1種又は2種で、Bは必須)、M1(M1はAl、Si、Cr、Mn、Cu、Zn、Ga、Ge、Mo、Sn、W、Pb、Biから選ばれる1種以上)、0.1質量%以下のO、0.05質量%以下のN、0.07質量%以下のCを含み、平均結晶粒径が4.0μm以下であり、かつ配向度をOr[%]、平均結晶粒径をD[μm]とした場合に、次の関係式(1)0.26×D+97≦Or≦0.26×D+99 ・・・(1)を満たすことを特徴とする希土類焼結磁石を提供する。【効果】本発明の希土類焼結磁石によれば、高いBrと高いHcJを両立した優れた磁気特性を得ることができる。【選択図】なし |
Author | SAKAKI KAZUAKI KUME TETSUYA |
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Snippet | SOLUTION: There is provided a rare earth sintered magnet comprising R (R is one or more elements selected from rare earth elements, invariably including Nd), T... |
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SubjectTerms | ALLOYS BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES MAGNETS METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
Title | RARE EARTH SINTERED MAGNET |
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