摘要:
A superconducting magnet device for a single crystal pulling apparatus is arranged outside a pulling furnace containing a crucible for melting a single crystal material therein so as to apply a magnetic field to the melted single crystal material. The superconducting magnet device for a single crystal pulling apparatus includes a cryostat containing a superconducting coil therein, and a refrigerator port arranged on the outer circumferential surface of the cryostat and provided with a cryogenic refrigerator that cools the superconducting coil. The cryogenic refrigerator is provided in a region of the outer surface region of the cryostat at which the intensity of the magnetic field generated by the superconducting coil is weak.
摘要:
A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 (.degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.
摘要:
Improved precipitation hardening permanent magnetic alloys of Alnico 9 type having comparatively lower Co content of 28 - 30 weight percent and further contain 0.02 - 0.2% C, 0.1 - 1% S and 0.1 - 4.0% Nb together all by weight, and Nb to Ti ratio of the alloys satisfies the formula;52.5 .ltoreq. 7 Nb + 10 Ti .ltoreq. 63 (by weight %).Due to the above-mentioned composition range of the alloying elements and the controlled relation between the content of the Nb and Ti as indicated above, the alloys are allowed to solidify into columnar grains by ordinary moulding and to display excellent magnetic properties.
摘要翻译:改进的Alnico 9型沉淀硬化永久磁性合金,具有相对较低的Co含量为28-30%(重量),进一步含有0.02-0.2%的C,0.1-1%的S和0.1-4.0%的Nb,以及Nb与Ti 合金的比例满足公式; 52.5 = 7 Nb + 10 Ti <63(重量%)。
摘要:
A non-magnetic part bonded to a magnetic core portion made of Ni-Zn ferrite in a magnetic head assembly which is made of a ceramic material comprised of 30 to 50 volume % of TiO.sub.2 and 70 to 50 volume % of Ba.sub.2 Ti.sub.9 O.sub.20 and BaAl.sub.2 Ti.sub.5 O.sub.14 wherein the volume ratio of Ba.sub.2 Ti.sub.9 O.sub.20 to the total volume of Ba.sub.2 Ti.sub.9 O.sub.20 and BaAl.sub.2 Ti.sub.5 O.sub.14 is 0.05 to 0.5.
摘要翻译:在磁头组件中由Ni-Zn铁氧体制成的磁芯部分结合的非磁性部件,其由包含30至50体积%的TiO 2和70至50体积%的Ba 2 Ti 9 O 20和BaAl 2 Ti 5 O 14的陶瓷材料制成,其中 Ba2Ti9O20与Ba2Ti9O20和BaAl2Ti5O14的总体积比为0.05〜0.5。
摘要:
A heat-treating furnace with a magnetic field comprising (a) a magnetic field-generating means constituted by an outer, ring-shaped, permanent magnet assembly comprising a plurality of permanent magnet segments combined with their magnetization directions oriented such that a magnetic flux flows in a diameter direction, and an inner, ring-shaped, permanent magnet assembly disposed inside the outer, ring-shaped, permanent magnet assembly and comprising a plurality of permanent magnet segments combined with their magnetization directions oriented such that a magnetic flux flows in a diameter direction; and (b) a heat treatment means disposed in a center hole of the inner, ring-shaped, permanent magnet assembly and comprising a cooling means, a heating means, and a heat-treating container containing heat-treating holder for holding a plurality of articles to be heat-treated in this order from outside, wherein an axial center of a magnetic field generated by the inner and outer ring-shaped, permanent magnet assemblies is substantially identical with an axial center of an article assembly in the heat-treating container.
摘要:
A superconducting magnet device for a single crystal pulling apparatus is arranged outside a pulling furnace containing a crucible for melting a single crystal material therein so as to apply a magnetic field to the melted single crystal material. The superconducting magnet device for a single crystal pulling apparatus includes a cryostat containing a superconducting coil therein, and a refrigerator port arranged on the outer circumferential surface of the cryostat and provided with a cryogenic refrigerator that cools the superconducting coil. The cryogenic refrigerator is provided in a region of the outer surface region of the cryostat at which the intensity of the magnetic field generated by the superconducting coil is weak.
摘要:
A magnetic core for a flying-type composite magnetic head, including a pair of core pieces, a glass portion for bonding the core pieces, and a thin magnetic metal layer of Fe-Al-Si alloys formed on at least one of opposing surfaces of the core pieces. The thin magnetic metal layer extends by 10 .mu.m or more from an apex of a magnetic gap defined by the core pieces and has an inner end existing by 15 .mu.m or more inside an inner end of the bonding glass portion.
摘要:
A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 .degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.
摘要翻译:飞行型复合磁头包括:(a)由通过第一玻璃部分接合在一起的一对芯片构成的磁芯,所述芯片的相对表面中的至少一个形成有薄的磁性金属层; (b)具有用于接收磁芯的狭缝的非磁性滑块; 和(c)用于将所述磁芯固定在所述狭缝中的第二玻璃部分; 第一玻璃部分的软化点低于第一接合温度70℃以上,屈服温度高于第二接合温度,第二玻璃部分的软化点低于第二接合温度70℃ C.或更多。 用于形成第一玻璃部分的第一接合温度T1℃)满足以下关系:T1 aW + b,其中W是薄磁性金属层的厚度(μm),a在-25和 -15和b在720和770之间,用于形成第二玻璃部分的第二接合温度T2为530℃或更低。