摘要:
A high-performance permanent magnet is provided. A permanent magnet expressed by a composition formula: R p Fe q M r Cu t Co 100-p-q-r-t . The magnet comprises a metal structure including a cell phase having a Th 2 Zn 17 crystal phase, and a Cu-rich phase provided to divide the cell phase and having a Cu concentration higher than that of the Th 2 Zn 17 crystal phase. An Fe concentration of the Th 2 Zn 17 crystal phase is not less than 30 atomic% nor more than 45 atomic%. An average length of the Cu-rich phase is not less than 30 nm nor more than 250 nm.
摘要:
The invention provides a high-performance permanent magnet. The permanent magnet has a composition that is expressed by a composition formula R p Fe q M r Cu t Co 100-p-q-r-t , where R is at least one element selected from a rare earth element, M is at least one element selected from the group consisting of Zr, Ti, and Hf, p is a number satisfying 10.8 ≤ p ≤ 12.5 atomic percent, q is a number satisfying 25 ≤ q ≤ 40 atomic percent, r is a number satisfying 0.88 ≤ r ≤ 4.5 atomic percent, and t is a number satisfying 3.5 ≤ t ≤ 13.5 atomic percent. The permanent magnet also has a metallic structure that includes a main phase having a Th 2 Zn 17 crystal phase, and a Cu-M rich phase having a higher Cu concentration and a higher M concentration than the main phase.
摘要翻译:本发明提供一种高性能永久磁铁。 永磁体具有由组成式R p Fe q M r Cu t Co 100-pqrt表示的组成,其中R是选自稀土元素中的至少一种元素,M是选自基团中的至少一种元素 由Zr,Ti和Hf组成,p是满足10.8‰¤p‰12.5原子%的数,q是满足25‰¤‰¤40原子%的数,r是满足0.88‰¤r‰的数 4.5原子%,t为满足3.5‰¤‰13.5原子%的数。 永久磁铁也具有金属结构,其包括具有Th 2 Zn 17结晶相的主相和具有比主相更高的Cu浓度和更高的M浓度的Cu-M相。
摘要:
A permanent magnet of the embodiment includes: a composition represented by a composition formula: R(Fe p M q Cu r C t Co l-p-q-r-t ) z (R is at least one element selected from rare-earth elements, M is at least one element selected from Ti, Zr and Hf, 0.01 ≤ p ≤ 0.01 ≤ q ≤ 0.01 ≤ r ≤ 0.1, 0.002 ≤ t ≤ 0.03, and 6 ≤ z ≤ 9); and a metallic structure including a main phase containing a Th 2 Zn 17 crystal phase, and a sub phase of the element M having an element M concentration of 30 atomic% or more. The sub phase of the element M precipitates in the metallic structure. A ratio of a circumferential length to a precipitated area of the sub phase of the element M is 1 or more and 10 or less.
摘要翻译:本实施方式的永磁体包括:组成式R(Fe p M q Cu r C t Co lpqrt)z(R是选自稀土元素中的至少一种元素,M为至少一种元素 选自Ti,Zr和Hf,0.01‰¤‰‰0.01‰¤‰0.01‰¤‰0.1,0.002‰‰‰0.03和6‰¤z‰¤9); 以及包含含有Th 2 Zn 17结晶相的主相和M元素浓度为30原子%以上的元素M的亚相的金属结构体。 元素M的亚相在金属结构中析出。 元件M的副相的周向长度与析出面积的比例为1以上且10以下。
摘要:
A magnet material of an embodiment includes a composition represented by a formula 1: (Fe 1-x-y Co x T y ) 2 (B 1-a A a ) b , and a metallic structure having a CuAl 2 crystal phase as a main phase. T is at least one element selected from V, Cr, and Mn. A is at least one element selected from C, N, Si, S, P, and Al. An atomic ratio x of Co and an atomic ratio y of the element T satisfy 0.01 ≤ y ≤ 0.5 and x + y ≤ 0.5. When the element T includes at least one element selected from V and Cr, a total atomic ratio of V and Cr is 0.03 or more. When the element T includes Mn, an atomic ratio of Mn is 0.3 or less. An atomic ratio a of the element A satisfies 0 ≤ a ≤ 0.4. A total atomic ratio b of B and the element A satisfies 0.8 ≤ b ≤ 1.2.
摘要翻译:实施方式的磁体材料包括由式1表示的组成:(Fe 1-xy Co x T y)2(B 1-a A a)b和具有CuAl 2结晶相作为主相的金属结构 。 T是选自V,Cr和Mn中的至少一种元素。 A是选自C,N,Si,S,P和Al中的至少一种元素。 元素T的Co原子比x和原子比y满足0.01‰¤y‰¤0.5和x + y‰¤0.5。 当元素T包括选自V和Cr中的至少一种元素时,V和Cr的总原子比为0.03以上。 当元素T包含Mn时,Mn的原子比为0.3以下。 元素A的原子比a满足0‰¤‰¤0.4。 B和元素A的总原子比b满足0.8‰¤b‰¤1.2。
摘要:
A magnetic material includes a substrate and a composite magnetic film formed on the substrate. The composite magnetic film comprises a plurality of columnar members formed on the substrate and having a longitudinal direction perpendicular to a surface of the substrate, each of the columnar members containing a magnetic metal or a magnetic alloy selected from at least one of Fe, Co, and Ni, and an inorganic insulator formed between the columnar members and selected from an oxide, a nitride, and fluoride of metal. The composite magnetic film has a minimum anisotropy magnetic field Hk1 in a surface parallel to the substrate surface and a maximum anisotropy magnetic field Hk2 in a surface parallel to the substrate surface, a ratio Hk2/Hk1 is greater than 1.
摘要:
In one embodiment, a permanent magnet has a composition represented by a composition formula: RpFeqMrCusCo100-p-q-r-s, where R is a rare earth element, M is at least one element selected from Zr, Ti, and Hf, p is 8.0 atomic % or more and 13.5 atomic % or less, q is 25 atomic % or more and 40 atomic % or less, r is 0.88 atomic % or more and 7.2 atomic % or less, and s is 3.5 atomic % or more and 13.5 atomic % or less, and a metallic structure including a cell phase having a Th2Zn17 crystal phase, a cell wall phase, and a platelet phase existing along a c plane of the Th2Zn17 crystal phase. An average thickness of the platelet phase is in a range of from 2.5 nm to 20 nm.
摘要:
A permanent magnet of an arrangement includes a sintered compact, the sintered compact including: a composition expressed by R p Fe q M r Cu s Co 100-p-q-r-s , (R is at least one element selected from rare earth elements, M is at least one element selected from Zr, Ti, and Hf, 10.5≤p≤12.5 atomic%, 24≤q≤40 atomic%, 0.88≤r≤4.5 atomic%, and 3.5≤s≤10.7 atomic%); and a structure having crystal grains each composed of a main phase including a Th 2 Zn 17 crystal phase, and a crystal grain boundary of the crystal grains. An average crystal grain diameter of the crystal grains is 50 µm or more and 100 µm or less, and a ratio of the crystal grains having a crystal grain diameter of 50 µm or more is 75% or more.