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1. 发明专利

JP2000226209A ULTRA-FINE PARTICLE THIN FILM AND APPARATUS USING THE SAME 失效
公开(公告)号：JP2000226209A
公开(公告)日：2000-08-15
申请号：JP27179999
申请日：1999-09-27
申请人： HITACHI LTD
发明人： ENDO KIJU , ARAYA TAKESHI , ONO MASAHIKO , KAWAMURA TAKAO , KAWAMURA HIROMITSU
IPC分类号： H01J29/88 , C01B13/14 , C01B33/12 , C03C17/00 , C03C17/22 , G02B1/11 , G02B1/118 , G02B1/14 , H01B1/00 , H01J9/20 , H01J29/86 , H01J29/89
摘要： PROBLEM TO BE SOLVED: To prepare an ultra-fine particle thin film with electroconductivity and antireflective function, comprising a complex ultra-fine particle having a specific particle diameter composed of at least silicon oxide, tin oxide, or the like, and constituting an arrangement to make the thickness of the film containing the ultra-fine particles have a specific value. SOLUTION: An ultra-fine particle thin film 5 is formed on a glass substrate 3. The ultra-fine particle thin film 5 mainly comprises ultra-fine particles 1 and the ultra-fine particles 1 are of a mixture of an electroconductive component 2 and an antireflective function component 6. Tin oxide is used as the electroconductive component 2 and silicon oxide is used as the antireflective function component 6. The volume ratio of tin oxide/silicon oxide in the film is >=0.1 and =1 wt.% and

2. 发明专利

JPH0578737A METHOD FOR HEAT TREATING AUSTENITIC STAINLESS STEEL BY LASER AND APPARATUS THEREFOR 失效
公开(公告)号：JPH0578737A
公开(公告)日：1993-03-30
申请号：JP24187691
申请日：1991-09-20
申请人： HITACHI LTD
发明人： KUROSAWA KOICHI , URASHIRO KEIICHI , AONO YASUHISA , FUNAMOTO TAKAO , KONUMA TSUTOMU , AOTA KINYA , ARAYA TAKESHI , TAMAI YASUKATA , TSUJIMURA HIROSHI , SAITO HIDEYO
IPC分类号： C21D1/09 , C21D6/00 , C23C26/00
摘要： PURPOSE:To obtain a surface modified layer and a surface alloy layer whose corrosion resistance is excellent even in the operation in water simliar to that in the operation in the air by locally forming the laser beam irradiated part into a cavity. CONSTITUTION:In the heat treatment of an austenitic stainless steel using a laser beam 29 in water, a metallic test piece 27 put in water in a tank is irradiated with a laser beam oscillated from a laser beam oscillator 1 via a condenser a laser torch 5. The irradiated part of the laser beam 29 is formed into an air space 32 by a fluid bulkhead jet 28 formed by high pressure water from a water inlet nozzle 13 and a high pressure gas from a shield gas feed hose 18, and in the state of the local air, heat treatment by a laser is executed. By rapid heating and rapid cooling by the irradiation of the laser beam 29, the modification of the surface layer is executed. Furthermore, the whole face in the moving direction of the laser beam 29 is coated with metallic powder, and the laser beam 29 is irradiated to form an alloy layer excellent in corrosion resistance.

3. 发明专利

JPH0433541B2 失效
公开(公告)号：JPH0433541B2
公开(公告)日：1992-06-03
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

4. 发明专利

JPH02175601A ULTRAFINE PARTICLE, PRODUCTION THEREOF AND ULTRAFINE-PARTICLE FILM-UTILIZING DEVICE 失效
公开(公告)号：JPH02175601A
公开(公告)日：1990-07-06
申请号：JP23161389
申请日：1989-09-08
申请人： HITACHI LTD
发明人： ENDO KIJU , ARAYA TAKESHI , ONO MASAHIKO , KAWAMURA TAKAO , KAWAMURA HIROMITSU
IPC分类号： G02B1/11 , C01B13/14 , C01B33/18 , C23C24/08 , G02B1/111 , G02B1/14 , G02B1/16 , H01B1/08 , H01J9/20 , H01J29/88
摘要： PURPOSE:To obtain an ultrafine particle effectively functioning as conductive reflection-preventing film for cathode tube by heating and evaporating a mixture of inorganic material in the presence of an oxygen gas and inert gas. CONSTITUTION:Two or more kinds of inorganic materials are blended and the above-mentioned inorganic materials are evaporated and simultaneously oxidized using one kind of heat source among arc, gas, laser, plasma and electron beam and then cooled to produce ultrafine particle having particle structure formed in a state of blend of oxides of the above-mentioned two or more kinds of materials or in a state enclosing one inorganic oxide in other inorganic oxides and having =50% based on total particles and maximum particle diameter is nearly twice average particle diameter and minimum particle diameter is nearly 1/2 times average particle diameter.

5. 发明专利

JPH01220851A FORMING METHOD OF BUMP 失效
公开(公告)号：JPH01220851A
公开(公告)日：1989-09-04
申请号：JP4713788
申请日：1988-02-29
申请人： HITACHI LTD
发明人： OKADA RYOJI , HANEDA MITSUAKI , ARAYA TAKESHI , HIOKI SUSUMU
IPC分类号： H01L21/60
摘要： PURPOSE:To enable the effective baking of a printed film without heating the part except a printed film (metal fine grain film), by a method wherein, after metal powder is spread on an IC or lead wires by screen printing method, and the metal fine-grain film in the form of a bump is formed, the film is irradiated with laser light and baked. CONSTITUTION:For example, on the front surface provided with an IC chip 1, an aluminum wiring 4 and an insulator 6, a gold thin film 6 being a superior reflector of YAG laser is formed, and gold paste is printed in the form of a bump on the aluminum wiring 4 to be connected to lead wires, by screen printing method. After printing, the paste is heated at a temperature in the range wherein the IC is endurable, and organic solvent is eliminated. After that, the dried gold-printed film is irradiated with YAG laser light, and the printed film is baked to form a gold bump 3. The gold thin film 6 formed on the whole surface of IC is eliminated except the bump 3. Further, prior to the formation of a metal fine-grain film in the form of a bump, a film composed of a material having high wettability to a sintered body (that is a bump) obtained by laser light irradiation is formed on the IC or lead wires.

6. 发明专利

JPS6448676A METHOD FOR CONTROLLING WELD LINE PROFILE 失效
公开(公告)号：JPS6448676A
公开(公告)日：1989-02-23
申请号：JP20404187
申请日：1987-08-19
申请人： HITACHI LTD
发明人： NAKAJIMA JUN , ENDO KIJU , ARAYA TAKESHI , OGATA HISANAO
IPC分类号： B23K9/08 , B23K9/02 , B23K9/12 , B23K9/127
摘要： PURPOSE:To carry out sampling processing of necessary signals for controlling a weld line profile by supplying an alternating current having downtime to an electromagnet formed of high-temperature superconducting material and oscillating an arc at a high speed to reduce influences of arc heat and spatters. CONSTITUTION:When the DC voltage is outputted from a welding power source 13, the arc 11 is generated between a wire 10 and an object 9 to be welded. At this time, when the alternating current having the downtime (t) is supplied from an electromagnet control circuit 14 to the electromagnet 5 provided along the direction of a weld line, an alternating magnetic field is generated on the arc 11 by said electromagnet 5. The arc 11 is oscillated in the direction to cross the weld line by said alternating magnetic field. Accordingly, since it is possible to oscillate the arc at the position separated from an arc generation part, the influences of the arc heat and the spatters can be reduced and its practicability is extremely enhanced.

7. 发明专利

JPS63267431A PREPARATION OF ULTRAFINE PARTICLES 失效
公开(公告)号：JPS63267431A
公开(公告)日：1988-11-04
申请号：JP9982487
申请日：1987-04-24
申请人： HITACHI LTD
发明人： ENDO KIJU , IBARAKI YOSHIAKI , ARAYA TAKESHI
IPC分类号： B01J19/08 , B22F9/12 , B22F9/14
摘要： PURPOSE:To make particle diameter distribution better and prepare ultrafine particles with little cohesion by generating an arc between a raw material of ultrafine particles and an electrode provided in the liquid and forming ultrafine particles. CONSTITUTION:When forming ultrafine particles, first, inactive gas is introduced from a sealed gas introducing inlet 9, while 5% stearic acid water solution is introduced in from a water solution introducing inlet 10, and after that, pure water 7 is introduced from a pure water introducing inlet 11 and a water tank 6, being filled up to the level higher than the end surface of a double sealed nozzle 8. By said arrangement, the water solution allowed to flow cylindrically acts as a curtain to the pure water 7, and an arc to be generated therein is in the same state as generated in gas. Electric current, therefore, is supplied from an electric source 4 for discharge to between the ultrafine particle raw material 1 and an electrode 2 to generate an arc 5. The raw material 1 is melted by the action of said arc heat to generate vapor and form ultrafine particles, which are quenched with the water solution flowing cylindrically immediately after the formation and discharged into the pure water 7.

8. 发明专利

JPS63227766A FORMATION OF SUPERFINE-GRAINED FILM 失效
公开(公告)号：JPS63227766A
公开(公告)日：1988-09-22
申请号：JP23220587
申请日：1987-09-18
申请人： HITACHI LTD
发明人： ARAYA TAKESHI , MATSUNAWA AKIRA , KATAYAMA SEIJI , HIOKI SUSUMU , HANEDA MITSUAKI , OKADA RYOJI
IPC分类号： C23C14/24 , C23C14/28 , H01L39/24
摘要： PURPOSE:To obtain a superfine-grained film in high purity with high efficiency, by carrying out film formation by directly applying the plumes produced by irradiating the surface of a raw material with a laser energy to a target. CONSTITUTION:Atmospheric pressure is selected in order to carry out film formation by uniformizing superfine grains into the required grain-size distribution. Further, atmospheric-gas components are selected in order to prepare the required compound or alloy film. Under the above-mentioned selected atmosphere, the surface of the raw material is irradiated with a laser energy so as to produce plumes. These plumes are directly applied to a previously heated target so as to be formed into a film.

9. 发明专利

JPS63224871A CORRECTING DEVICE FOR CORRECTION DIRECTION OF WELDING TORCH 失效
公开(公告)号：JPS63224871A
公开(公告)日：1988-09-19
申请号：JP5658887
申请日：1987-03-13
申请人： HITACHI LTD
发明人： NAKAJIMA JUN , ARAYA TAKESHI , UDAGAWA TSUGIO , KAWASAKI KYOICHI
IPC分类号： B23K9/127 , B23K9/12
摘要： PURPOSE:To prevent the deterioration of the following property and to improve the reliability of control of a welding torch by storing the torch position correction direction detected by a positional deviation detector of the welding torch during a weaving cycle to calculate the large correction direction and judging the propriety to correct the torch position. CONSTITUTION:In case the large correction direction is improper, a correction means 12 and a signal changeover means 13 to stop the correction or output a correction signal in the reverse direction to the large correction direction are added to the positional deviation detection means 8 of the welding torch based on a result of a judgement means 11 to judge whether the large correction direction is proper or not based on the reference quantity and the detected quantity of a welding current or the voltage, etc., at the weaving end to compare with the reference quantity with respect to the large correction direction calculated by a correction direction discrimination means 9 to calculate the large correction direction after the torch position correction direction detected by the positional deviation detector 8 is cycled by one weaving, by which the deterioration of the following property due to the disturbance is prevented.

10. 发明专利

JPS63192562A METHOD AND DEVICE FOR PROFILE CONTROL IN WELDING 失效
公开(公告)号：JPS63192562A
公开(公告)日：1988-08-09
申请号：JP2234187
申请日：1987-02-04
申请人： HITACHI LTD
发明人： NAKAJIMA JUN , ARAYA TAKESHI , UDAGAWA TSUGIO , KAWASAKI KYOICHI
IPC分类号： B23K9/095 , B23K9/00 , B23K9/12 , B23K9/127
摘要： PURPOSE:To perform a good profile welding on the joint having a gap by extracting the power spectrum of the specific frequency components in the welding current at weaving time and using the welding conditions corresponding to the calculation value by finding the gap width from the relation of the power spectrum and gap width. CONSTITUTION:A fillet welding is performed by following up a torch 3 to a weld line with weaving it for the lap joint of the thin plate having a gap G between an upper plate 1 and lower plate 2. A gap detection device 10 extracts the power spectrum of the frequency components two-three times a weaving frequency from in the waveform of welding current to find the gap width G from the relation of the power spectrum stored in advance in a memory device 11 to the gap width. The detection device 10 further selects the optimum welding conditions for the calculated gap width G from the relation of the gap width stored in advance in a memory device 12 to the welding conditions to output a conditions changing signal to a control device 7. Thus, good profile welding can be performed on the joint having a gap.

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