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公开(公告)号：EP2043112A1
公开(公告)日：2009-04-01
申请号：EP08720931.8
申请日：2008-02-27
申请人： TDK Corporation
CPC分类号： C04B35/2633 , C04B35/2641 , C04B35/6262 , C04B35/632 , C04B2235/32 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3277 , C04B2235/3279 , C04B2235/3284 , C04B2235/3286 , C04B2235/3287 , C04B2235/3293 , C04B2235/3294 , C04B2235/3409 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/605 , C04B2235/6562 , C04B2235/72 , C04B2235/767 , C04B2235/77 , C04B2235/785 , C04B2235/788 , H01F1/11
摘要： A sintered ferrite magnet having a ferrite phase with a hexagonal structure as the main phase, wherein the composition of the metal elements composing the main phase is represented by the following general formula (1):
R x Ca m A 1-x-m (Fe 12-y M y )z: (1)
x, m, y and z in formula (1) satisfying all of the conditions represented by the following formulas (2)-(6): 0.2 ≤ x ≤ 0.5 0.13 ≤ m ≤ 0.41 0.7 x - m ≤ 0.15 0.18 ≤ yz ≤ 0.31 9.6 ≤ 12 z ≤ 11.8 and wherein the density of the sintered ferrite magnet is at least 5.05 g/cm 3 , and the crystal grains of the sintered ferrite magnet satisfy all of the conditions represented by the following formulas (7) and (8), where L µm is the average for the maximum value and S µm is the average for the minimum value among the diameters passing through the center of gravity of each grains in the crystal cross-section parallel to the c-axis direction of hexagonal structures. L ≤ 0.95 1.8 ≤ L / S ≤ 2.5摘要翻译： 具有六方结构的铁素体相作为主相的烧结铁氧体磁体，其中构成主相的金属元素的组成由以下通式（1）表示：€ƒ€ƒ€ƒ€ƒ€ ƒ€ƒ€ƒRx Ca m A 1-xm（Fe 12-y M y）z：ƒ€ƒ€ƒ€ƒ（1）式（1）中的x，m，y和z满足所有 以下公式（2） - （6）表示的条件：0.2‰¤x‰¤0.5 0.13‰¤‰‰0.41 0.7 ¢x - m‰0.15 0.18‰¤‰¤0.31 9.6‰¤12 ¢z‰¤11.8，其中烧结铁氧体磁体的密度为至少5.05g / cm 3，并且烧结的铁氧体磁体的晶粒满足由下式（7）和（8）表示的所有条件， 其中Lμm是最大值的平均值，Sμm是平行于c轴dir的晶体截面中通过每个晶粒的重心的直径中的最小值的平均值 六角结构。 L‰¤0.95 1.8‰¤L / S‰¤2.5
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公开(公告)号：EP2511249B9
公开(公告)日：2017-08-30
申请号：EP11756314.8
申请日：2011-03-15
申请人： TDK Corporation
发明人： YANAGIDA, Shigeki , MORI, Takahiro , MORITA, Hiroyuki , SUTO, Nobuhiro , KATOH, Tatsuya , MINACHI, Yoshihiko
CPC分类号： H01F1/01 , C04B35/2633 , C04B35/2641 , C04B35/6261 , C04B35/62695 , C04B35/632 , C04B35/63408 , C04B35/63424 , C04B35/638 , C04B2235/32 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3227 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3277 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3286 , C04B2235/3287 , C04B2235/3293 , C04B2235/3294 , C04B2235/3409 , C04B2235/3418 , C04B2235/3427 , C04B2235/5409 , C04B2235/5436 , C04B2235/5445 , C04B2235/6022 , C04B2235/605 , C04B2235/6562 , C04B2235/6588 , C04B2235/767 , C04B2235/786 , C04B2235/787 , C04B2235/788 , H01F1/10 , H01F1/11
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公开(公告)号：EP2043112B1
公开(公告)日：2015-04-08
申请号：EP08720931.8
申请日：2008-02-27
申请人： TDK Corporation
CPC分类号： C04B35/2633 , C04B35/2641 , C04B35/6262 , C04B35/632 , C04B2235/32 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3277 , C04B2235/3279 , C04B2235/3284 , C04B2235/3286 , C04B2235/3287 , C04B2235/3293 , C04B2235/3294 , C04B2235/3409 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/605 , C04B2235/6562 , C04B2235/72 , C04B2235/767 , C04B2235/77 , C04B2235/785 , C04B2235/788 , H01F1/11
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4.发明公开FERRITE MAGNETIC MATERIAL, FERRITE MAGNET, FERRITE SINTERED MAGNET 有权FERRITMAGNETMATERIAL，FERRITMAGNET UND FERRITSINTERMAGNET
公开(公告)号：EP2511249A1
公开(公告)日：2012-10-17
申请号：EP11756314.8
申请日：2011-03-15
申请人： TDK Corporation
发明人： YANAGIDA, Shigeki , MORI, Takahiro , MORITA, Hiroyuki , SUTO, Nobuhiro , KATOH, Tatsuya , MINACHI, Yoshihiko
CPC分类号： H01F1/01 , C04B35/2633 , C04B35/2641 , C04B35/6261 , C04B35/62695 , C04B35/632 , C04B35/63408 , C04B35/63424 , C04B35/638 , C04B2235/32 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3227 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3277 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3286 , C04B2235/3287 , C04B2235/3293 , C04B2235/3294 , C04B2235/3409 , C04B2235/3418 , C04B2235/3427 , C04B2235/5409 , C04B2235/5436 , C04B2235/5445 , C04B2235/6022 , C04B2235/605 , C04B2235/6562 , C04B2235/6588 , C04B2235/767 , C04B2235/786 , C04B2235/787 , C04B2235/788 , H01F1/10 , H01F1/11
摘要： An object of the invention is to provide a ferrite magnetic material, which can provide permanent magnet wherein a high Br and HcJ are maintained, and in addition, a high Hk/HcJ is provided, and to provide a ferrite magnet and ferrite sintered magnet respectively comprising said ferrite magnetic material.
In order to achieve such object, a ferrite magnetic material, in which its main phase comprises ferrite phase having a hexagonal crystal structure, and metal element composition expressed by Ca 1-w-x-y R w Sr x Ba y Fe z M m wherein 0.25 2 , is shown on Y-axis and a total content xl of z and m is shown on X-axis, a relation between xl and yl is within a range surrounded by 4 points placed on X-Y coordinate having the X and Y axes, and a ferrite magnet and a ferrite sintered magnet comprising the ferrite magnetic material are provided.摘要翻译： 本发明的目的是提供一种铁氧体磁性材料，其可以提供保持高Br和HcJ的永磁体，并且另外提供高Hk / HcJ，并分别提供铁氧体磁体和铁氧体烧结磁体 包括所述铁氧体磁性材料。 为了实现上述目的，铁素体磁性材料主要包括具有六方晶系结构的铁素体相和由Ca 1-wxy R w Sr x Ba y Fe z M m表示的金属元素组成，其中0.25
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