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61. 发明专利

JPH0788359A METHOD AND DEVICE FOR FORMING COMPOUND FILM 失效
公开(公告)号：JPH0788359A
公开(公告)日：1995-04-04
申请号：JP8658894
申请日：1994-04-25
申请人： HITACHI LTD
发明人： ARAYA TAKESHI , MATSUNAWA AKIRA , KATAYAMA SEIJI , HIOKI SUSUMU , HANEDA MITSUAKI , OKADA RYOJI
IPC分类号： C01B13/14 , B01J19/12 , B22F9/12 , C01B21/06 , C01B31/30 , C01G1/00 , C23C14/28
摘要： PURPOSE:To form a high-purity compd. film by impulsively irradiating a raw material contg. the components of compds. with a laser beam in an atmosphere gas contg. the components of the compds. constituting the desired compd. film to generate blooms contg. the components of the compds. and bringing these blooms into direct contact with the film forming surface of an object to be formed with the film. CONSTITUTION:While the laser beam generated from a laser source 1 of a YAG laser is converged by a condenser lens 3, the laser beam enters a superfine particle film forming chamber 5 through a glass plate 4. A large quantity of the superfine particles are formed at a high velocity when the raw material 6 is irradiated with the laser energy under the conditions under which blooming arises. Since the formed superfine particles is in an active state, the superfine particles of the various compds. are formed by the direct chemical reaction of the blooms 8 and the atmosphere gas. The blooms 8 contg. a large quantity of the compd. superfine particles migrate at the high velocity and, therefore, the blooms adhere strongly to a substrate 12 which is the object to be formed with the film by casting such blooms to this substrate 12. The adhesive power is further increased if the substrate is preheated.

62. 发明专利

JPH0211391B2 失效
公开(公告)号：JPH0211391B2
公开(公告)日：1990-03-14
申请号：JP8141182
申请日：1982-05-17
申请人： HITACHI LTD
发明人： FUJIWARA KIROKU , MYAKE NORIHISA , MARUYAMA YUTAKA , HASHIMOTO YASUHIRO , TAKAHASHI ICHIRO , ARAYA TAKESHI
IPC分类号： B25J9/00 , B25J5/02

63. 发明专利

JPH0259418A PRODUCTION OF SUPERFINE METAL BORIDE PARTICLES 失效
公开(公告)号：JPH0259418A
公开(公告)日：1990-02-28
申请号：JP20838888
申请日：1988-08-24
申请人： HITACHI LTD
发明人： ENDO KIJU , ARAYA TAKESHI , ONO MASAHIKO , ITO OSAMU
IPC分类号： C01B35/04 , H01B1/06 , H01C7/00
摘要： PURPOSE:To obtain superfine metal boride particles having a uniform particle size, hardly contg. impurities and used as an electrically conductive compsn. for a thick film resistor by generating arc between two metal boride electrodes obliquely placed opposite to each other in a nonoxidizing atmosphere. CONSTITUTION:Two electrodes made of a metal boride such as lanthanum hexaboride as starting material are obliquely placed opposite to each other in a nonoxidizing atmosphere of gaseous nitrogen optionally mixed with inert gas. Arc is generated between the electrodes to form superfine lanthanum hexaboride particles.

64. 发明专利

JPH01203204A PRODUCTION OF SUPERFINE OXIDE PARTICLE 失效
公开(公告)号：JPH01203204A
公开(公告)日：1989-08-16
申请号：JP2751788
申请日：1988-02-10
申请人： HITACHI LTD
发明人： ENDO KIJU , ARAYA TAKESHI , ONO MASAHIKO , HIOKI SUSUMU
IPC分类号： C01B13/20 , B01J19/08 , C01B13/14 , C01B13/32 , C01B33/18
摘要： PURPOSE:To produce the title homogeneous superfine oxide particles free of impurities by filling the inside of a system with an oxygen atmosphere, and introducing an inert gas from around a discharge electrode at the time of producing the particles with the use of an arc heat source. CONSTITUTION:The inside of a superfine particle generating chamber 9 is filled with the gaseous oxygen or gaseous mixture of oxygen and an inert gas as the atmospheric gas, and an arc 4 is generated between the raw material 2 for superfine particles and an electrode 1. The raw material 2 is vaporized by the heat of the arc 4, and the vapor is allowed to react with the activated oxygen in the atmospheric gas to obtain superfine oxide particles. At this time, an inert shielding gas is introduced from around the electrode 1 through a nozzle 5 to prevent the oxidation of the electrode 1 by the gaseous oxygen in the atmospheric gas. By this method, the infiltration of a part of the electrode material into the raw superfine particles can be obviated.

65. 发明专利

JPS6475177A ARC WELDING EQUIPMENT 失效
公开(公告)号：JPS6475177A
公开(公告)日：1989-03-20
申请号：JP23220787
申请日：1987-09-18
申请人： HITACHI LTD
发明人： FUJIWARA KIROKU , ARAYA TAKESHI
IPC分类号： B23K9/06 , B23K9/073
摘要： PURPOSE:To perform welding with little occurrence of welding spatters by forming a compensating ring of composite material which is formed by joining high-temperature superconductive material to superior conductive material on sheet metal and moving a position of the compensating ring. CONSTITUTION:A negative electrode output terminal of a DC arc welding source 5 is connected to base metal 1 via an inductive reactor 6 in series and a positive electrode output terminal is connected to a feeding chip 4. The arc voltage is fed between the base metal 1 and a welding wire 2 and a welding current is carried thereto. Winding 8 is wound round an open magnetic circuit shape iron core 7 and the compensating ring 9 which is formed by joining the high- temperature superconductive material to the outside periphery of a square tubular conductor of the superior conductive material is fitted in an insulated state on the outside periphery of the central part thereof to form the inductive reactor 6. The compensating ring 9 is moved in the longitudinal direction of the winding 8. By this method, a leading gradient of the welding current, a limitation of a peak value and the subsequent gradient of the welding current can be selected and improved freely by the compensating ring 9.

66. 发明专利

JPS63264819A FORMING METHOD FOR OXIDE SUPERCONDUCTOR THIN FILM 失效
公开(公告)号：JPS63264819A
公开(公告)日：1988-11-01
申请号：JP9737287
申请日：1987-04-22
申请人： HITACHI LTD
发明人： OKADA RYOJI , HANEDA MITSUAKI , ARAYA TAKESHI , HIOKI SUSUMU , ENDO KIJU
IPC分类号： H01L39/24 , C01B13/14 , C01G1/00 , C23C14/08 , C23C14/28 , C30B29/22 , H01B12/06 , H01B13/00 , H01L39/12
摘要： PURPOSE:To upgrade productivity by radiating laser on an oxide superconductor sintered material so as to vaporize the oxide superconductor so that an oxide superconductor thin film is formed on a substrate. CONSTITUTION:A sintered material (target) 2 of auxiliarily fired oxide superconductor powder is disposed on a supporting jig 18, and vacuum exhaustion of a container is fully performed, and next a mixed gas of high purity oxygen and high purity alkali is sealed in a container. After the gas is sealed-in until a prescribed pressure is obtained, a high-frequency voltage is applied to form a plasmatic state in a quartz glass tube 8 which is installed in the container, and YAG laser 4 is radiated on the target 2. Accordingly the target 2 is immediately vaporized, and vaporizing atoms and molecules react in a plasma region in the quartz tube 8 and are heaped on a saphire substrate in order to form an oxide superconductor thin film. This oxide superconductive thin film of good quality can be thus formed and also a film formation speed and productivity are upgraded in this film.

67. 发明专利

JPS63242906A PRODUCTION OF OXIDE ULTRAFINE PARTICLE 失效
公开(公告)号：JPS63242906A
公开(公告)日：1988-10-07
申请号：JP7407587
申请日：1987-03-30
申请人： HITACHI LTD
发明人： ENDO KIJU , IBARAKI YOSHIAKI , ARAYA TAKESHI , HANEDA MITSUAKI , KANAMARU MASATOSHI
IPC分类号： B01J19/08 , B22F9/14 , C01B13/34
摘要： PURPOSE:To enable production of a product having excellent particle diameter distribution free from aggregation in producing ultrafine particles by the use of an arc heat source, by treating ultrafine particle immediately after formation with oxygen of thermally decomposed water into an oxide, simultaneously quenching and coating with an organic substance. CONSTITUTION:An Ar gas as a shielding gas is made to flow around an electrode 2 for electric discharge opposing to an ultrafine particle raw material 1. On the other hand an aqueous solution of a fatty acid is introduced and sprayed from a jetting nozzle 10 around the Ar gas in an atomized state. Then an arc 5 is generated between the raw material 1 and the electrode 2 by the use of an electric source 4, the raw material 1 is melted by the heat and ultrafine particles generated by metallic vapor are formed. In the operation the arc is protected by the Ar gas and the sprayed aqueous solution is hardly entangled in the arc. On the other hand, part of the sprayed aqueous solution in the vicinity of the arc is decomposed by arc heat into gas of hydrogen and oxygen and the formed ultrafine particles are reacted with the oxygen to give ultrafine particles of oxide. Then, the ultrafine particles are brought into contact with part of the undecomposed sprayed aqueous solution far from the arc, quenched and simultaneously a coating film of the fatty acid is formed on the surface and recovered by a water tank 6.

68. 发明专利

JPS63170816A MANUFACTURE OF SUPERCONDUCTING WIRE 失效
公开(公告)号：JPS63170816A
公开(公告)日：1988-07-14
申请号：JP40587
申请日：1987-01-07
申请人： HITACHI LTD
发明人： IBARAKI YOSHIAKI , ENDO KIJU , ARAYA TAKESHI , KANAMARU MASATOSHI , SHIRAKU YOSHINORI
IPC分类号： C22C1/04 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To obtain a superconducting wire with excellent characteristic by mixing plural metallic elements made of superfines under the specific stoichiometric composition, stuffing them into a pipe made of a superconducting stabilizing material, making them to be drawn in a fine wire, and subjected to heat treatment so that the raw material can be put in reaction. CONSTITUTION:Metallic elements A (Nb, V, etc.) and B (Al, Ge, Si, Ga, Sn, etc.) consisting of fines whose grain sizes are under 1,000Angstrom are mixed together by adding C2H5OH and applying ultrasonic vibration to each of them, then ultrasonic vibration is applied to them after mixing the two liquids together so as to uniformly disperse them and C2H5OH is eliminated by evaporation. A filament 3 is formed by densely stuffing a copper pipe 2 with the mixed metallic elements while hydro-reduction being applied, and a filament 5 is formed by stuffing a copper pipe with several pieces of filaments 3 again. When a filament is processed at 600-1,050 deg.C after being drawn in a fine wire, it reacts uniformly with good reactivity, so that a superconducting wire with excellent high critical magnetic field density and high critical current density etc. can be obtained. The combination of elements A and B is actually Nb3Al, Nb3Ge, etc. Quick heating and cooling are effective for reaction of Nb3Al.

69. 发明专利

JPS6321588B2 失效
公开(公告)号：JPS6321588B2
公开(公告)日：1988-05-07
申请号：JP8289280
申请日：1980-06-20
申请人： HITACHI LTD
发明人： FUJIWARA KIROKU , UDAGAWA TSUGIO , MIHARA NAGAHARU , ARAYA TAKESHI
IPC分类号： B23K9/12 , B23K9/095 , B23K9/127

70. 发明专利

JPS632563A CUTTING METHOD FOR HIGH RADIATIVE SOLID REFUSE 失效
公开(公告)号：JPS632563A
公开(公告)日：1988-01-07
申请号：JP14303286
申请日：1986-06-20
申请人： HITACHI LTD
发明人： HANEDA MITSUAKI , ARAYA TAKESHI , YOSHIDA TOMIJI
IPC分类号： B23K9/013 , B23K9/00 , B23K10/00 , G21F9/30
摘要： PURPOSE:To improve the cutting capacity in an underwater cutting and the stability in working by separating the surface film by cutting it with the plasma arc caused between the materials to be cut simultaneously with removing it from a plasma jet. CONSTITUTION:A DC power source device 4 is connected in the space with the nozzle 7 of an electrode 6 with a non-transfer type plasma torch 2, a non- transfer type plasma jet is generated and the surface film of the material 1 to be cut is removed. A transfer type plasma arc is generated with a transfer type plasma torch 3 and the material 1 to be cut of after removing the surface film is cut with its welding. In this way the cutting capacity in underwater cutting can be improved.

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