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31. 发明授权

US5498361A Manganese-zinc system ferrite 失效
标题翻译：锰锌系铁素体
公开(公告)号：US5498361A
公开(公告)日：1996-03-12
申请号：US256903
申请日：1994-08-08
申请人： Atsuhito Matsukawa , Shoji Inoue
发明人： Atsuhito Matsukawa , Shoji Inoue
IPC分类号： C01G49/00 , C04B35/26 , C04B35/38 , H01F1/34
CPC分类号： H01F1/344 , C04B35/2658
摘要： For the purpose of improving the initial magnetic permeability of manganese-zinc system ferrite in the high-frequency band of 10 kHz to 500 kHz, a manganese-zinc system ferrite comprising 50-56 mol % of Fe.sub.2 O.sub.3, 22-39 mol % of MnO, and 8-25 mol % of ZnO is fired after adding thereto up to 800 ppm calculated as Bi.sub.2 O.sub.3 of a bismuth oxide component and up to 1,200 ppm calculated as MoO.sub.3 of a molybdenum oxide component in admixture. It has an average grain diameter of from 5 to 50 .mu.m.
摘要翻译： PCT No.PCT / JP93 / 01920 Sec。 371日期1994年8月8日 102（e）日期1994年8月8日PCT提交1993年12月28日PCT公布。第WO94 / 14723号公报日期为1994年7月7日。为了提高10kHz〜500kHz的高频带内的锰锌系铁氧体的初始导磁率，可以使用包含50-56摩尔％的Fe 2 O 3的锰 - 锌系铁氧体，根据氧化铋成分的Bi 2 O 3计，以氧化铋成分计，以氧化铋成分计为800ppm，以氧化钼成分计算为高达1,200ppm，加入氧化物22〜39摩尔％，氧化锌8-25摩尔％。平均粒径为5〜50亩。

32. 发明授权

US5368763A Low power loss Mn-Zn ferrites 失效
标题翻译：低功耗Mn-Zn铁氧体
公开(公告)号：US5368763A
公开(公告)日：1994-11-29
申请号：US140362
申请日：1993-10-20
申请人： Masakatsu Yamazaki , Tetsu Narutani , Hideaki Kobiki
发明人： Masakatsu Yamazaki , Tetsu Narutani , Hideaki Kobiki
IPC分类号： C04B35/38 , C01G49/00 , C04B35/26 , H01F1/34
CPC分类号： C04B35/2658
摘要： A low power loss Mn-Zn ferrite consists essentially of Fe.sub.2 O.sub.3, MnO and ZnO at a given mole ratio and contains given amounts of SiO.sub.2, CaO, niobium oxide and titanium oxide or antimony oxide as trace additives. This ferrite is suitable as a transformer material for switched mode power supply.
摘要翻译：低功率损耗的Mn-Zn铁氧体主要由Fe2O3，MnO和ZnO以给定的摩尔比组成，并含有给定量的SiO 2，CaO，氧化铌和氧化钛或氧化锑作为痕量添加剂。该铁氧体适用于开关电源的变压器材料。

33. 发明授权

US4963281A Low loss oxide magnetic material 失效
标题翻译：低损耗氧化物磁性材料
公开(公告)号：US4963281A
公开(公告)日：1990-10-16
申请号：US366443
申请日：1989-06-15
申请人： Hikohiro Togane
发明人： Hikohiro Togane
IPC分类号： C04B35/38 , C04B35/26 , H01F1/34
CPC分类号： C04B35/2625
摘要： A low loss oxide magnetic material having low magnetic loss characteristic and being usable as the deflection yoke core for high speed scanning cathode ray tube, etc., which consists essentially of Fe.sub.2 O.sub.3, MgO, ZnO and MnO as the principal constituents; and Bi.sub.2 O.sub.3 and CuO as the auxiliary constituents.

34. 发明授权

US4440713A Process for making fine magnetic ferrite powder and dense ferrite blocks 失效
标题翻译：制造精细铁氧体粉末和致密铁素体块的方法
公开(公告)号：US4440713A
公开(公告)日：1984-04-03
申请号：US429645
申请日：1982-09-30
申请人： Eugene B. Rigby
发明人： Eugene B. Rigby
IPC分类号： C01G49/00 , C01G53/00 , C04B35/26 , C04B35/30 , C04B35/38 , G11B5/133 , H01F1/34 , H01F1/36 , C04B33/32
CPC分类号： C01G49/0072 , C01G49/0018 , C01G49/0036 , C01G49/0063 , C01G49/009 , C01G53/00 , C01G53/006 , C04B35/26 , C04B35/265 , C01P2002/32
摘要： A manufacturing process for making a finer ferrite powder which can then be used to make a very dense block of the ferrite ceramic. The process for making the powder includes the steps of co-precipitation of an aqueous solution of metal ions and an ammonium oxalate solution. The co-precipitation particles are separated, washed and dried. The particles are low-temperature calcined and then vibro-energy or ball milled and dried. The particles are fluffed and broken up in a blender and pressed into a mold for sintering and pressing in a hot isostatic press procedure. The ferrite blocks are then post annealed in an oxygen atmosphere and cooled to form a dense magnetic ceramic particle. Preferably the process is for use in the production of nickel-zinc ferrite used for magnetic heads.
摘要翻译：一种制造更细的铁氧体粉末的制造方法，其可以用于制造非常致密的铁氧体陶瓷块。制造粉末的方法包括共沉淀金属离子水溶液和草酸铵溶液的步骤。共沉淀颗粒被分离，洗涤和干燥。颗粒是低温煅烧的，然后振动能量或球磨并干燥。颗粒起泡并在搅拌器中分解并压入模具中进行烧结并在热等静压机中压制。然后铁氧体块在氧气氛中进行后退火，并冷却以形成致密的磁性陶瓷颗粒。优选地，该方法用于生产用于磁头的镍 - 锌铁氧体。

35. 发明授权

US4372865A Carbonate/hydroxide coprecipitation process 失效
标题翻译：碳酸氢盐/氢氧化物共沉淀过程
公开(公告)号：US4372865A
公开(公告)日：1983-02-08
申请号：US191012
申请日：1980-09-26
申请人： Bu-Fan B. Yu , Alex Goldman
发明人： Bu-Fan B. Yu , Alex Goldman
IPC分类号： C01G49/00 , C01G53/00 , C04B35/26 , C04B35/38
CPC分类号： C01G49/0063 , C01G49/0018 , C01G49/0036 , C01G49/0072 , C01G49/009 , C01G53/00 , C04B35/2625 , C04B35/265 , C04B35/2658 , C01P2004/03 , C01P2004/32 , C01P2004/61 , C01P2004/62 , C01P2006/42
摘要： The present invention improves the processing and products of coprecipitation of Fe and other metals selected from Mn, Zn, Ni, and Mg as carbonates and hydroxides in the manufacture of magnetically soft ferrites. Teachings are provided which enable control of the characteristics, especially the particle shape of coprecipitated metal carbonates and hydroxides, to bring about significant advantages in further processing such as relief of critical sintering requirements to meet commercial specifications, improved intermediate products which can be more easily handled during processing, and improved quality magnetically-soft, compacted, ferrite components.In the manufacture of MnZn ferrites, sintering furnace temperatures encountered by components from the same batch can vary as much as 100.degree. C. while maintaining specifications of permeability and loss factor whereas, with prior ferrite materials, a variation of as little as 5.degree. C. to 10.degree. C. can make the difference between acceptable and non-acceptable product.
摘要翻译：本发明改进了在制备磁软铁氧体中Fe和其它选自Mn，Zn，Ni和Mg的金属作为碳酸盐和氢氧化物的共沉淀的加工和产物。提供了能够控制特性，特别是共沉淀的金属碳酸盐和氢氧化物的颗粒形状的教导，以在进一步加工中带来显着的优点，例如缓解关键烧结要求以满足商业规格，改进的中间产物可以更容易地处理在加工过程中，并且改进了质量好的磁软，压实的铁氧体部件。在MnZn铁氧体的制造中，来自相同批次的组分遇到的烧结炉温度可以变化多达100℃，同时保持渗透率和损耗因子的规格，而对于现有的铁氧体材料，其变化低至5℃ 到10℃可以使可接受和不可接受的产品之间的差异。

36. 发明授权

US3846322A Method of producing large single crystals of mixed ferrites 失效
标题翻译：生产大型单晶混晶的晶体的方法
公开(公告)号：US3846322A
公开(公告)日：1974-11-05
申请号：US4884870
申请日：1970-06-11
申请人： SUGIMOTO M , WATANABE H
发明人： WATANABE H , SUGIMOTO M
IPC分类号： C04B35/26 , C30B11/00 , C30B13/00 , C04B35/30 , C04B35/38
CPC分类号： C30B11/00 , C04B35/26 , C04B35/265 , C04B35/2658 , C30B13/00 , C30B29/26
摘要： The present invention relates to a method for producing a large single crystal of a mixed ferrite containing ZnO and having a spinel structure by melting the raw materials under an oxygen atmosphere with a pressure of from 1.5 to 20 atmospheres at a temperature of from 1,600* to 1,800*C to reduce the amount of ferrous ion contained in the molten ferrite to less than 7 wt. percent, and cooling the molten ferrite at the rate of from 2* to 8*C/hour to carry out the crystal growth by the Bridgman technique.
摘要翻译：本发明涉及一种含有ZnO并含有尖晶石结构的混合铁氧体的大单晶的方法，该方法是在氧气氛下，在1.5〜20个大气压的压力下，在1600〜 1800℃，以将铁素体中含有的亚铁离子的量减少到7重量％以下。百分比，并以2℃至8℃/小时的速率冷却熔融铁素体，通过Bridgman技术进行晶体生长。

37. 发明授权

US3843541A Magnetic head core of large grain size and low porosity 失效
标题翻译：大颗粒大小和低孔径的磁性核心
公开(公告)号：US3843541A
公开(公告)日：1974-10-22
申请号：US34149173
申请日：1973-03-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIROTA E , CHIBA H , TAWARA Y
IPC分类号： C04B33/32 , C04B35/26 , G11B5/133 , G11B5/187 , H01F1/37 , C04B35/30 , C04B35/38
CPC分类号： C04B33/326 , C04B33/32 , C04B35/26 , C04B35/265 , C04B35/2658 , G11B5/133 , G11B5/1871 , H01F1/37 , Y10T29/49034 , Y10T29/49048
摘要： 1. A MAGNETIC HEAD CORE CONSISTING ESSENTIALLY OF SINTERED FERRITE CONSISTING OF A PLURALITY OF GRAINS, HAVING AN AVERAGE GRAIN SIZE GREATER THAN 30 U AND A POROSITY LESS THAN 0.1% BY VOLUME, AND HAVING A COMPOSITION CONSISTING OF NI-ZN FERRITE, MN-ZN FERRITE, LI-ZN FERRITE, CU-ZN FERRITE, MG-ZN FERRITE OR Y-IRON GARNET.

38. 发明授权

US3837910A Method of manufacturing a polycrystalline ferrite body 失效
标题翻译：制造多晶铁素体的方法
公开(公告)号：US3837910A
公开(公告)日：1974-09-24
申请号：US18625471
申请日：1971-10-04
申请人： PHILIPS CORP
发明人： VAN DER LAAN K , PELOSCHEK H
IPC分类号： C04B35/26 , C04B35/30 , C04B35/38
CPC分类号： C04B35/2658 , C04B35/26 , C04B35/265 , Y10S264/58
摘要： A method of manufacturing a polycrystalline ferrite body obtained by sintering a compressed block of the starting material. A readily detrition-resistant material having interdigitated crystals of an average grain size of more than 50 microns is obtained by adding prior to sintering a material from the group BaF2, SrF2; the oxides of B, Bi, Ca, Cu, Mg, Pb, Si, V; and Fe3(PO4)2 and choosing a very particular combination of added quantity and sintering temperature.
摘要翻译：一种制造通过烧结起始材料的压缩块获得的多晶铁氧体的方法。通过在烧结来自BaF 2，SrF 2的组分的材料之前加入具有大于50微米的平均晶粒尺寸的交叉晶体的易于抗还原的材料; B，Bi，Ca，Cu，Mg，Pb，Si，V的氧化物; 和Fe3（PO4）2，并选择添加量和烧结温度的非常特殊的组合。

39. 发明授权

US3822210A Fine spinel-type ferrite particles featuring high dispersibility and the process of manufacture of same 失效
标题翻译：精细的尖晶石型颗粒具有特殊的高分辨率及其制造工艺
公开(公告)号：US3822210A
公开(公告)日：1974-07-02
申请号：US27931772
申请日：1972-08-10
申请人： IWASE K , TAKADA T , KIYAMA M , NIPPON ELECTRIC CO
发明人： TAKADA T , KIYAMA M , IWASE K
IPC分类号： C01B13/36 , C04B35/26 , C09C1/22 , G11B5/706 , H01F1/11 , H01F1/36 , C04B35/32 , C04B35/38
CPC分类号： B82Y30/00 , C01B13/363 , C01P2002/32 , C01P2002/50 , C01P2004/03 , C01P2004/38 , C01P2004/62 , C01P2004/64 , C01P2006/10 , C01P2006/12 , C01P2006/19 , C01P2006/22 , C01P2006/42 , C01P2006/80 , C04B35/2625 , C04B35/265 , C04B35/2658 , C04B35/2666 , C09C1/22 , G11B5/70678 , H01F1/11 , H01F1/36
摘要： SPINEL-TYPE SINGLE-CRYSTAL FERRITE PARTICLES ARE PROVIDED OF SUBSTANTIALLY ISOTROPIC SHAPE CONTAINING IRON AND AT LEAST ONE KIND OF DILAVENT METAL OTHER THAN IRON, THE RATIO OF THE TOTAL NUMBER OR IRON ATOMS TO THE DIVILENT METAL ATOMS BEING AT LEAST 2 TO 1, THE AVERAGE PARTICLE SIZE RANGING FROM ABOUT 0.05 TO 1.0 MICRON. THE FERRITE CRYSTALS ARE MADE BY ADMIXING AN AQUEOUS SOLUTION CONTAINING FERROUS IONS AND THE DIVALENT METAL IONS WITH 0.55 TO 3 MOL E2QUIVALENTS, RELATIVE TO ACID IN THE SOLUTION, OF AN ALKALI TO OBTAIN A SUSPENSION OF THE HYDROXIDES AT A PH OF MORE THAN 6.5 AND THEREAFTER BUBBLING AN OXIDIZING GAS INTO THE SUSPENSION MAINTAINED AT 60* C. TO 90* C. UNTIL THE HYDROXIDES DISAPPEAR AND FERRITE PARTICLES ARE FORMED.

40. 发明授权

US3652416A Oxide magnetic materials 失效
标题翻译：氧化物磁性材料
公开(公告)号：US3652416A
公开(公告)日：1972-03-28
申请号：US3652416D
申请日：1969-10-29
申请人： NIPPON ELECTRIC CO
发明人： SUGANO IZURU , AKASHI TSUNEO , MATSUBARA TETSUJIN , KENMOKU YOSHIHIRO , OKUDA TANEAKI
IPC分类号： C04B35/38 , C04B35/26 , H01F1/34
CPC分类号： C04B35/2658
摘要： Manganese-zinc ferrites are provided consisting essentially of manganese oxide, zinc oxide and iron oxide and small but effective amount of stannic oxide and lithium oxide ranging up to about 3.2 percent by weight of stannic acid and up to about 0.125 percent by weight of lithium oxide.
摘要翻译：提供的锰 - 锌铁氧体主要由氧化锰，氧化锌和氧化铁组成，并且小但有效量的氧化锡和氧化锂范围高达约3.2重量％的锡酸和至多约0.125重量％的氧化锂。

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