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    • 1. 发明申请
    • MICROWAVE DIELECTRIC CERAMIC COMPOSITION
    • 微波电介质陶瓷组合物
    • WO2002059058A1
    • 2002-08-01
    • PCT/JP2001/003588
    • 2001-04-25
    • SUMITOMO SPECIAL METALS CO., LTDFUKAGAWA, TomokiNISHIKAWA, Kazuhiro
    • FUKAGAWA, TomokiNISHIKAWA, Kazuhiro
    • C04B35/462
    • C04B35/475C04B35/462C04B35/465C04B35/50C04B35/6262C04B2235/3201C04B2235/3203C04B2235/3208C04B2235/3213C04B2235/3224C04B2235/3227C04B2235/3232C04B2235/3298
    • An object of the present invention is to obtain a dielectric ceramic composition wherein the dielectric constant ε is large, the temperature coefficient τf of the resonance frequency is close to 0, and which has a large Q value, by adding to and blending with a ceramic composition whose τf of the resonance frequency is large on the plus side a ceramic composition whose temperature coefficient τf is large on the minus side. In an Li 2 O-R 2 O 3 -TiO 2 -based composition where R is one or two or more of Nd, Sm, Pr and La, an improved dielectric constant ε can be achieved by introducing a specific quantity of Bi 2 O 3 , and τf can be shifted to the plus side and in addition a considerable improvement in Qf achieved by introducing a specific quantity of MO (where M is one or two of Ca and Sr). Furthermore, by introducing a specific quantity of Na 2 O together with the MO (where M is one or two of Ca and Sr), in particular in the case of material of εr≥ 150, it is possible to control τf to the vicinity of 0 while maintaining Qf at an high value.
    • 本发明的目的是获得介电常数εε大的谐振频率的温度系数τf接近于0并具有大的Q值的介电陶瓷组合物,通过加入和掺合 在负侧的温度系数τf大的陶瓷组合物的正面上的谐振频率的τf大的陶瓷组合物。 在其中R是Nd,Sm,Pr和La中的一种或两种以上的Li> 2 2 <3> < - TiO 2>组合物中,可以通过引入改进的介电常数ε 特定量的Bi> 2O 3,并且tau f可以转移到正侧,另外通过引入特定量的MO(其中M是Ca和Sr中的一个或两个)实现的Qf的显着改善, 。 此外,通过与MO(其中M是Ca和Sr的一个或两个)一起引入特定量的Na 2 O 3,特别是在εr = 150的材料的情况下,可以控制 τf保持在0附近,同时保持Qf为高值。
    • 3. 发明申请
    • METHOD OF MAKING RAPIDLY SOLIDIFIED ALLOY FOR MAGNET
    • 制备磁铁快速固化合金的方法
    • WO2004014582A1
    • 2004-02-19
    • PCT/JP2003/008321
    • 2003-06-30
    • SUMITOMO SPECIAL METALS CO., LTD.
    • KANEKIYO, Hirokazu
    • B22D11/06
    • B22D11/0611B22D11/064C22C45/02H01F1/0571H01F1/0577H01F41/0273
    • A melt of an alloy, represented (Fe 1-m T m ) 100-x-y-z Q x R y M z , where T is Co and/or Ni, Q is B and/or C, R is at least one rare-earth element, M is selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb; 10 at%≤x≤35 at%; 2 at%≤y≤10 at%; 0 at%≤z≤10 at%; and 0≤m≤0.5, is prepared. Next, the melt is brought into contact with, and rapidly cooled and solidified by, the surface of a rotating chill roller. The melt is teemed onto a guide member, of which the guide surface defines a tilt angle with a horizontal plane, runs down on the guide surface, and then is fed through at least one tubular hole onto a contact area on the surface of the chill roller.
    • 表示(Fe> 1-m)的合金熔体,其中T是Co和/或Ni,Q是B,并且 /或C,R是至少一种稀土元素,M选自Al,Si,Ti,V,Cr,Mn,Cu,Zn,Ga,Zr,Nb,Mo,Ag,Hf,Ta, Pt,Au和Pb; 10 at%<= x <= 35 at%; 2 at%<= y <= 10 at%; 0 at%<= z <= 10 at%; 和0 <= m <= 0.5。 接下来,使熔体与旋转的冷却辊的表面接触并被冷却和固化。 熔体被浇注到引导构件上,引导表面限定与水平面的倾斜角,在引导表面上向下延伸,然后通过至少一个管状孔进入冷却表面上的接触区域 滚筒。
    • 5. 发明申请
    • CORROSION-RESISTANT PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME
    • 耐腐蚀永磁体及其制造方法
    • WO1998009300A1
    • 1998-03-05
    • PCT/JP1997002579
    • 1997-07-25
    • SUMITOMO SPECIAL METALS CO., LTD.KIKUI, FumiakiIKEGAMI, MasakoYOSIMURA, Kohshi
    • SUMITOMO SPECIAL METALS CO., LTD.
    • H01F01/08
    • H01F41/026Y10T428/12743
    • An R-Fe-B permanent magnet whose initial magnetic characteristics are hardly deteriorated even when the magnet is subjected to a salt spray long test and which has a stable high magnet characteristics, a stable high abrasion resistance, and a stable high corrosion resistance and a method for manufacturing the magnet. After the surface of the permanent magnet is cleaned by, e.g., an ion sputtering method, an Al film is formed on the surface of the magnet as an intermediate layer, an AlN, TiN, or Ti1-xAlxN film is formed on the surface of the intermediate layer by a thin film forming method such as ion plating in an N2 gas and a Ti1-xAlxN film is formed by a thin film forming method such as ion reaction plating in an N2 gas. Since the Al film formed as the intermediate layer acts as a sacrificial film of the permanent magnet body and the underlying Ti film layer, the adhesion of the Ti film to the magnet body and the Al film is remarkably improved.
    • 即使在磁体进行盐雾长时间测试并且具有稳定的高磁铁特性,稳定的高耐磨性和稳定的高耐腐蚀性的情况下,其初始磁特性几乎不劣化的R-Fe-B永磁体 制造磁铁的方法。 在通过例如离子溅射法清洁永磁体的表面之后,在作为中间层的磁体的表面上形成Al膜,在其表面上形成AlN,TiN或Ti1-xAlxN膜 通过在N 2气体中的离子电镀等的薄膜形成方法和Ti1-xAlxN膜的中间层通过在N 2气中的离子反应电镀等薄膜形成方法形成。 由于形成为中间层的Al膜用作永磁体和下面的Ti膜层的牺牲膜,所以Ti膜对磁体和Al膜的粘附性显着提高。
    • 8. 发明申请
    • SHEET MAGNET HAVING MICROCRYSTALLINE STRUCTURE AND METHOD OF MANUFACTURING THE SAME, AND METHOD OF MANUFACTURING ISOTROPIC PERMANENT MAGNET POWDER
    • 具有微结构结构的片状磁体及其制造方法以及制造等离子体永磁体粉末的方法
    • WO1998018141A1
    • 1998-04-30
    • PCT/JP1997003725
    • 1997-10-16
    • SUMITOMO SPECIAL METALS CO., LTD.KANEKIYO, HirokazuHIROSAWA, Satoshi
    • SUMITOMO SPECIAL METALS CO., LTD.
    • H01F01/057
    • B82Y25/00H01F1/0571H01F1/0579
    • A sheet magnet having a residual magnetic flux density Br of not less than 10 kG, a cost performance equal to that of a hard ferrite magnet, and a thickness of 70-300 mu m contributing to the miniaturization and thinning of a magnetic circuit, and a method of manufacturing the same. When a molten alloy of a predetermined structure having a small content of a rare earth element is subjected to continuous casting using a cooling roll in a vacuum inert gas atmosphere of not more than 30 kPa at a predetermined peripheral speed of the roll, it turns into a crystalline structure substantially not less than 90 % of which comprises a FE3B type compound and a compound phase having a-Fe and Nd2Fe14B type crystalline structures compatible with the former. A continuous sheet magnet of 70-300 mu m in thickness comprising a microcrystalline structure of 10-50 nm in average crystal grain diameter having magnetic characteristics of iHc>/=2kOe, Br>/=10 kG and practically usable as a permanent magnet can be obtained. A sheet magnet which has heretofore been difficult to be industrially produced can be mass-produced at a low price by a simple method.
    • 具有不小于10kG的剩余磁通密度Br,与硬铁氧体磁体相同的成本性能和70-300μm的厚度的片状磁体有助于磁路的小型化和变薄,以及 其制造方法。 当使用稀土元素含量少的预定结构的熔融合金在辊的预定圆周速度下在不超过30kPa的真空惰性气体气氛中使用冷却辊进行连续铸造时,变成 基本上不小于90%的晶体结构包含FE3B型化合物和具有与前者相容的-Fe和Nd2Fe14B型结晶结构的化合物相。 具有70-300μm厚度的连续片状磁体,其包含具有iHc> / = 2kOe,Br> / = 10kG的磁特性并且实际上可用作永磁体的平均晶粒直径为10-50nm的微晶结构 得到。 迄今为止难以在工业上制造的片状磁体可以通过简单的方法以低价格批量生产。