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公开(公告)号：JPH1065222A
公开(公告)日：1998-03-06
申请号：JP23258396
申请日：1996-08-14
Applicant: NAT AEROSPACE LAB
Inventor： NODA YASUTOSHI , KOU ENSEI , TANJI YASUNORI , KUMAGAI TATSUO , SHINNO MASAYUKI , TADA YASUO
Abstract: PROBLEM TO BE SOLVED: To enable a thermoelectric conversion device to be surely manufactured which is long in service life and high in reliability. SOLUTION: A sintered or a molten thermoelectric semiconductor material 4 is prepared. The material 4 and electrode materials 5 are pressed against each other and plasma-bonded together by applying a large current, whereby a thermoelectric conversion main body 11 formed of the material 4 and electrodes 12 are integrated into one piece for the formation of a thermoelectric conversion device 10.
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公开(公告)号：JPH0566176A
公开(公告)日：1993-03-19
申请号：JP22805991
申请日：1991-09-09
Applicant: NAT AEROSPACE LAB , MITSUBISHI HEAVY IND LTD
Inventor： KUMAGAI TATSUO , SAKURANAKA NOBORU , UEDA SHUICHI , SAITO TOSHIHITO , WAKAMATSU YOSHIO , SHINNO MASAYUKI , ADACHI NAOTO , NAGATA SATOSHI , SAKAMOTO AKIRA
Abstract: PURPOSE:To restrain oxidation of a panel-shaped test piece from its end face and to enable miniaturization of the test piece by fixing the panel-shaped test piece in the direction of flow, and extending the surface of the test piece in the longitudinal or cross direction. CONSTITUTION:In a test piece holder 2 a panel-shaped test piece 1 is installed between two holders 2 each shaped like an extended test piece 1, and the test piece 1 is fixed within the gas flow of a high temperature gas generator 3 and in the direction of the gas flow. Because the boundary layer of the high temperature gas flow first develops on the holders 2, then transfers itself into turbulent flow, and becomes a sufficiently developed turbulent flow boundary layer on the test piece 1, no great change in heat conduction due to the transition of the boundary layer occurs on the test piece 1 and the test piece 1 is uniformly heated. Since heat stagnation points exit only on the holders 2, the rate of uneven heating of the test piece 1 can be lowered. Also, the holders 2 prevent the end portion of the test piece 1 from being exposed at its face to the high temperature gas flow, thereby preventing oxidation of the test piece 1 from its end face.
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公开(公告)号：JP2001108643A
公开(公告)日：2001-04-20
申请号：JP28565199
申请日：1999-10-06
Applicant: NAT AEROSPACE LAB
Inventor： MORIYA SHINICHI , TADANO MAKOTO , SATO MASAHIRO , KUMAGAI TATSUO , WILLIAM KUMETEIKU , KUSAKA KAZUO , SHINNO MASAYUKI
IPC: G01N25/72
Abstract: PROBLEM TO BE SOLVED: To provide an inspection system by which a face to be inspected can be inspected in a short time, with good efficiency and in a noncontact manner toy a continuous scanning operation without damaging and contaminating an object to be inspected and which can be applied even when the coating layer of the object to be inspected is thin. SOLUTION: A means by which the surface of an object to be inspected is irradiated with a laser beam is provided. A means wherein infrared rays radiated by a spot which is irradiated with the laser beam and which is heated are received so as to be input to an infrared radiation thermometer is provided. A scanning means wherein a sensor member on which the irradiation part of the laser beam and an infrared receiving part are arranged is scanned with reference to the surface of the object to be inspected is provided. A means by which the detected value of the infrared radiation thermometer is compared with standard data and by which the state of the coating layer of the object to be inspected is analyzed is provided.
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公开(公告)号：JPH1022532A
公开(公告)日：1998-01-23
申请号：JP18675296
申请日：1996-06-27
Applicant: NAT AEROSPACE LAB
Inventor： TANJI YASUNORI , KUMAGAI TATSUO , MORIYA SHINICHI , OSHIMA TAMIO , SHINNO MASAYUKI , TADA YASUO
Abstract: PROBLEM TO BE SOLVED: To prevent deterioration of thermoelectric conversion characteristics caused by sublimation and oxidation, etc., of an element in PbTe, for example and attain stable thermoelectric conversion for a long period by crowning at least a high temperature side end part of a thermo-element with a conductive block having a recessed part in which the end part is force-fitted. SOLUTION: Since edge parts 1H and 1L of a thermo-element 1 are crowned with a conductive block 3, the end part can be electrically and thermally combined to other parts by the conductive block 3. The thermo-element 1 and the conductive block 3 are combined by force-fitting a thermo-element end part to the recessed part 1 of the conductive block 3. Since there is a possibility of generation of a gap between a thermo-element and a conductive block microscopically, generation of heat shearing stress can be avoided even if the high temperature side end part 1H is subjected to high temperature heating. Furthermore, it is possible to avoid generation of sublimation and oxidation of a constituent element of the thermo-element 1 and prevent variation of an element and deterioration of characteristics.
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公开(公告)号：JPH11220184A
公开(公告)日：1999-08-10
申请号：JP7511698
申请日：1998-02-02
Applicant: NAT AEROSPACE LAB
Inventor： TANJI YASUNORI , MORIYA SHINICHI , SHINNO MASAYUKI , KUMAGAI TATSUO , KIZARA KATSUHITO
Abstract: PROBLEM TO BE SOLVED: To simplify structure, to reduce the number of item parts, and at the same time to increase thermoelectric conversion efficiency. SOLUTION: A thermoelectric conversion element 31 consisting of a thermoelectric conversion material is sandwiched between metal segments 41 to 43 that face opposite to each other, and the metal segments 41 to 43 are connected to the thermoelectric conversion element 31 by a fixing screw 34. The through- hole of the fixing screw 34 is formed in the metal segments 41 and 42 that face opposite to each other, a through-hole 35 of the fixing screw 34 is formed at the center part of the thermoelectric conversion element 31, and furthermore a screw hole 37 for screwing to the tip of the fixing screw 34 is formed in the metal segment 43. Then, the fixing screw 34 is inserted into the through-hole of one of metal segments 41 and 42 and the through-hole of the thermoelectric conversion element 31, the tip part is screwed to the screw hole 37 of the segment 43, and the thermoelectric conversion element 31 is arranged between the metal segments which face opposite to each other for connection.
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Patent Agency Ranking
公开(公告)号：JPH0510854A
公开(公告)日：1993-01-19
申请号：JP16437991
申请日：1991-07-04
Applicant: NAT AEROSPACE LAB , MITSUBISHI HEAVY IND LTD
Inventor： KUMAGAI TATSUO , SAKURANAKA NOBORU , UEDA SHUICHI , SAITO TOSHIHITO , KUSAKA KAZUO , WAKAMATSU YOSHIO , SHINNO MASAYUKI , ADACHI NAOTO , NAGATA SATOSHI , SAKAMOTO AKIRA
Abstract: PURPOSE:To enable a large heat-resistance material and a sample such as a cooling structure to be heated for achieving an evaluation test by allowing a high-temperature high-speed gas to be discharged by receiving supply of a fuel and an oxidizer and this gas flow to be directed toward the sample. CONSTITUTION:A high-temperature high-speed gas is generated by allowing a fuel f to be combusted in a combustion equipment 10 and a gas flow is accelerated in a nozzle 11, thus forming a field of a high-temperature high-speed gas flow h. Then, a heat-resistance material, a sample 12 in cooling structure, etc., are installed within the field of this flow h and is heated, thus enabling them to be evaluated. Since this structure is based on a rocket-engine structure. a flow rate of a high-temperature gas can be set to a high level. thus enabling a test device to be large, especially an exit diameter of the nozzle 11 to be large. This increase in size allows a field of a large gas flow h to be formed, thus enabling the large heat-resistance material and the sample such as a cooling structure to be heated and evaluation test to be performed.
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公开(公告)号：JP2001052526A
公开(公告)日：2001-02-23
申请号：JP22252799
申请日：1999-08-05
Applicant: NAT AEROSPACE LAB
Inventor： TANJI YASUNORI , KIZARA KATSUHITO , KUMAGAI TATSUO , MORIYA SHINICHI , SHINNO MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive electric insulating coating film material excellent in heat resistance, heat transmittance and heat resistance strain characteristics in use at normal temperatures of 200-500 deg.C, in which an electric insulating coating film is formed at a heat treatment temperature of 500 deg.C or lower. SOLUTION: In a fabricating method, an electric insulating coating film material including a mixture 4 composed of composite glass powder containing water lass, PbO or the like and electric insulating powder is applied onto a metal substrate 2, followed by drying and heating, thereby causing a thermal oxidation reaction. Thus, an electric insulating coating film 7 consisting of an electric insulating oxide layer 5 and a glass-based coating film 6 is formed on the metal substrate.
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公开(公告)号：JPH11220182A
公开(公告)日：1999-08-10
申请号：JP3552598
申请日：1998-02-02
Applicant: NAT AEROSPACE LAB
Inventor： TANJI YASUNORI , MORIYA SHINICHI , SHINNO MASAYUKI , KUMAGAI TATSUO , KIZARA KATSUHITO
IPC: B23K35/28 , H01L23/373 , H01L35/08
Abstract: PROBLEM TO BE SOLVED: To enable shifting at joint face, and perform electric and thermal coupling closely, by constituting a union medium 3 by such composition that the liquid-form metal and solid-phase metal show coexistence phase at all times, within the heating temperature range of a material to be jointed, that the quantity of solid solution changes, according to the temperature change, and that the fusing point changes gradually. SOLUTION: A jointing medium 3 is used for the union in the case where the fellow materials 1 and 2 to be joined different in thermal expansion coefficient are given different temperatures, or in such a like case. The jointing medium 3 is of such composition that the liquid-phase metal and the solid-phase metal show two-phase coexistence phase at all times in the temperature region from the room temperature (20 deg.C) to about 600 deg.C. It has a composition of including Gax Int-x and at least one hand of MA and MB. Here, x is a 0.1
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公开(公告)号：JPH1022534A
公开(公告)日：1998-01-23
申请号：JP18675196
申请日：1996-06-27
Applicant: NAT AEROSPACE LAB
Inventor： TANJI YASUNORI , NODA YASUTOSHI , KUMAGAI TATSUO , KIZARA KATSUHITO , KOU ENSEI , SHINNO MASAYUKI , TADA YASUO
Abstract: PROBLEM TO BE SOLVED: To enable a base material to be doped with impurities surely at a required doping amount, that is, with good controllability uniformly by making impurities react on a constituent element of a base material once to be a compound and adding and dispersing it to a base material. SOLUTION: High frequency current is supplied to a high frequency coil 2 and the coil is heated. In the process, at first, it is heated at a temperature which is lower than a fusing point of a base material 5 and higher than a fusing point of impurities 4. A compound Na2 Te is produced by making Na of the impurity element material 4 and Te of a base material react in this way. Oxidizing property of the compound is greatly weak when compared with Na only and becomes a stable substance. Then, heating of a high temperature is carried out. The high temperature heating is carried out at a temperature which is higher than a fusing point of Pb and Te of a base material for dissolving all the raw material inside a crucible 1 and contents inside the crucible 1 are fully agitated and mixed while the high temperature heating is maintained. Thereby, impurities of Na can be dispersed uniformly and entirely into a base material of PbTe.
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公开(公告)号：JPH1074986A
公开(公告)日：1998-03-17
申请号：JP18314697
申请日：1997-06-24
Applicant: NAT AEROSPACE LAB
Inventor： NODA YASUTOSHI , KOU ENSEI , KIZARA KATSUHITO , KUMAGAI TATSUO , TANJI YASUNORI , CHIN RITSUTOU , SHINNO MASAYUKI , TADA YASUO
Abstract: PROBLEM TO BE SOLVED: To obtain highly reliable thermoelectric elements for low, intermediate and high temperatures having long service life by performing discharge plasma sintering, while pressing a thermoelectric semiconductor material against an electrode material thereby integrating a thermoelectric conversion element body and an electrode. SOLUTION: A metal plate or a metal powder electrode material 6 composing one electrode of a thermoelectric conversion element, a powdery thermoelectric semiconductor material 5 composing a thermoelectric conversion element body, and the metal plate or metal powder electrode material 6, composing the other electrode of the thermoelectric conversion element are arranged sequentially on a lower punch 4 in the cavity 1 of a die 2. Both upper and lower punches 3, 4 are then pressed to compress the electrode material 6 and the thermoelectric semiconductor material 5. Under that state, a high current is conducted between the upper and lower punches 3, 4 in order to perform discharge plasma sintering, thus integrating the electrode material 6 and the thermoelectric semiconductor material 5. According to the method, highly reliable thermoelectric elements for low, intermediate and high temperatures, having long service life can be obtained.
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