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1. 发明专利

JPH06287056A PRODUCTION OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH06287056A
公开(公告)日：1994-10-11
申请号：JP7426593
申请日：1993-03-31
申请人： OSAKA OXYGEN IND , FINE CERAMICS CENTER
发明人： MATSUSHIGE HARUHIKO , KIJIMA TAKAHIKO , HAYASHI SHIGEKI , KUBO YUKIO , DOGE KAZUO
IPC分类号： C01G1/00 , C01G3/00 , C01G29/00 , C04B35/00 , C04B35/45 , H01B13/00 , H01F6/06 , H01F5/08
摘要： PURPOSE:To improve critical temperature (Tc) and critical current (Ic) by sintering or annealing an oxide in a specific atmosphere. CONSTITUTION:Superconducting substances of oxides of Bi, Sr, Ca, Cu, etc., are mixed in a prescribed composition ratio and sintered at about 85 deg.C for about 86 hours to give a sintered material. Then the sintered material is annealed in an atmosphere composed of oxygen and/or argon under >=0.001 atm of partial pressure of water vapor and under >=0.01 atm of partial pressure of nitrogen for about 800 deg.C for 5 hours to give an oxide superconductor.

2. 发明专利

JPH01173863A SENSOR FOR MEASURING CONCENTRATION OF OXYGEN IN MOLTEN IRON 失效
公开(公告)号：JPH01173863A
公开(公告)日：1989-07-10
申请号：JP33564187
申请日：1987-12-28
申请人： OSAKA OXYGEN IND
发明人： FURUTA CHIKAYOSHI , MATSUSHIGE HARUHIKO , NAGATSUKA TOSHIO
IPC分类号： G01N27/411
摘要： PURPOSE:To improve the stability of waveforms regardless of temp. and the oxygen value of a molten iron by measuring the concn. of oxygen in the molten iron by means of a sensor which is formed with a coating layer contg. a specific binder on the outer peripheral face of a solid electrolyte element having oxygen ion conductivity. CONSTITUTION:A mixture composed of alpha-Al2O3, ZrO2 group and MgF2 and/or CaF2 is used as a coating agent. The ZrO2 group may be ZrO2 alone or any of stabilized zirconia such as ZrO2+MgO, ZrO2+CaO, ZrO2+Y2O3 and org. solvents of PVA (polyvinyl alcohol), acrylic acid system, etc., are used for the binder. The coating layer is formed on the surface of the solid electrolyte by dipping the solid electrolyte in the soln. of the above-mentioned Al2O3-ZrO2 mixture and drying the electrolyte naturally for >=6hr at room temp. The coated solid electrolyte is built into the sensor, by which the sensor for measuring the concn. of the oxygen in the molten iron is completed.

3. 发明专利

JPH0440353A SENSOR FOR MEASURING QUANTITY OF OXYGEN IN MOLTEN SI 失效
公开(公告)号：JPH0440353A
公开(公告)日：1992-02-10
申请号：JP14685390
申请日：1990-06-05
申请人： OSAKA OXYGEN IND , SUMITOMO METAL IND
发明人： MATSUSHIGE HARUHIKO , YAMAMOTO TOSHIYUKI
IPC分类号： G01N27/411
摘要： PURPOSE:To exactly measure the quantity of oxygen without contaminating molten Si to be measured by coating the entire part of the outside surface of a solid electrolyte in contact with the molten Si with a cover of Si having the purity equivalent to or higher than the purity of the molten Si to be measured. CONSTITUTION:The oxygen sensor is constituted by coating the entire outer surface of the solid electrolyte 8, in which a standard material 9 is housed, with the high-purity Si cover 18. The SiO and solid electrolyte 8 contained in the atmosphere gas in the atmosphere are, therefore, shut off by the cover 18. The solid electrolyte 8 and the cover 18 are fixed to a protective pipe 20 together with a thermocouple 14 and a counter electrode 7 by cement 19. Then, if the entire part of this probe is immersed into the molten Si, the cover 18 melts and the outside surface of the solid electrolyte 8 comes into direct contact with the molten Si. A battery circuit is thereby formed and an electromotive force E is generated. This oxygen sensor is the same as the oxygen sensors of the conventional types except that the cover 18 exists and that the material of the counter electrode 7 is the Si having the purity equal to or higher than the molten Si to be measured.

4. 发明专利

JPS63249048A CONTINUOUS OXYGEN MEASURING PROBE FOR MOLTEN METAL 失效
公开(公告)号：JPS63249048A
公开(公告)日：1988-10-17
申请号：JP8262987
申请日：1987-04-03
申请人： NIPPON KOKAN KK , OSAKA OXYGEN IND
发明人： SHIROKURA TAKASHI , MATSUSHIGE HARUHIKO , IBUKI KAZUMI
IPC分类号： G01N27/411 , G01N33/20
摘要： PURPOSE:To continuously and accurately measure oxygen activity over a long time, by specifying the mixing wt. ratio of the metal oxide particle and metal particle constituting a standard polar substance and setting the particle size of both particles to 200 mesh or less. CONSTITUTION:The mixing wt. ratio of the metal oxide particle and metal particle constituting the standard polar substance 3 of an oxygen measuring probe is set to 1/4-4 and the particle size of both particles is set to 200 mesh or less. In this case, the standard polar substance 3 is pref. constituted of a chromium oxide particle and a metal chromium particle. As mentioned above, by setting the particle size to 200 mesh or less, filling density is enhanced to sufficiently secure a contact area and, therefore, the lowering of accuracy during measurement can be prevented. Since the mixing wt. ratio is largely taken, even when continuous measurement is performed over a long time, the gradual lowering in oxygen electromotive force can be prevented.

5. 发明专利

JPH10232087A METHOD AND SYSTEM FOR SUPPLYING DRY AIR 失效
公开(公告)号：JPH10232087A
公开(公告)日：1998-09-02
申请号：JP29754297
申请日：1997-10-29
申请人： OSAKA OXYGEN IND
发明人： OMI TADAHIRO , KIJIMA TAKAHIKO , MATSUSHIGE HARUHIKO , HIMEO KAZUHIKO , MIZOGAMI SATOSHI
IPC分类号： F17D1/04 , F25J3/04 , H01L21/02
摘要： PROBLEM TO BE SOLVED: To provide a dry air supply system in which the moisture concentration in the dry air can be lowered to 1ppb, or below, hydrocarbon HC can be removed and pure nitrogen can be produced simultaneously with the dry air. SOLUTION: The dry air supply system comprises a compressor 2 for compressing the material air 1, a unit 6 for removing impurities from the compressed air, means (main heat-exchanger) 14 for cooling and purifying the air, a rectifying column 9 for rectifying the liquefied air to separate pure nitrogen, a line 8 for supplying the separated and gasified pure nitrogen to a nitrogen use point 16, and a line 7 for supplying the gasified remaining part to a dry air use point 15 in place of dry air.

6. 发明专利

JPH02264856A METHOD AND PROBE FOR MEASURING ACTIVITY OF SOLUTE ELEMENT IN MOLTEN METAL 失效
公开(公告)号：JPH02264856A
公开(公告)日：1990-10-29
申请号：JP8568489
申请日：1989-04-06
申请人： NIPPON KOKAN KK , OSAKA OXYGEN IND , SASABE MINORU
发明人： SASABE MINORU , KIKUCHI YOSHITERU , TAKAOKA TOSHIO , SENOO HIROMI , FURUTA CHIKAYOSHI , MATSUSHIGE HARUHIKO
IPC分类号： G01N27/411 , G01N27/26 , G01N33/20
摘要： PURPOSE:To measure the activity of a solute metal by surrounding a solid electrolyte by substance composed of a deoxidizer and controlling the deoxidation of the molten metal in the vicinity of the periphery of the solid electrolyte. CONSTITUTION:A deoxidizing metal 6 composed of a deoxidizer is provided so as to surround the solid electrolyte 1 of a measuring probe and, when a molten metal 12 is collected in a container 11 and a component sensor equipped with a deoxidizer is immersed in the metal 12, the metal 6 is melted or oxidized and the metal 12 in the vicinity of the periphery of the electrolyte 1 is locally deoxidized to become low in its oxygen potential. In this state, the component sensor generates the electromotive force corresponding to the local equilibrium generated in the boundary with the coating 2 formed to the surface of the electrolyte 1 between a standard electrode 4 and a measuring electrode 5 in order to make the activity of the oxide of the solute element to be measured of the metal 12 constant. Said electromotive force is measured by a potentiometer 10. Temp. is read by a thermometer 9 through a thermocouple 7. The activity of the solute element can be calculated from the obtained electromotive force and temp.

7. 发明专利

JPH01203971A PROBE FOR MEASURING SI CONCENTRATION IN MOLTEN METAL 失效
公开(公告)号：JPH01203971A
公开(公告)日：1989-08-16
申请号：JP2745688
申请日：1988-02-10
申请人： SASABE MINORU , NIPPON KOKAN KK , OSAKA OXYGEN IND
发明人： SASABE MINORU , IWASAKI KATSUHIRO , HASHIMOTO HIROKICHI , FURUTA CHIKAYOSHI , MATSUSHIGE HARUHIKO , NAGATSUKA TOSHIO
IPC分类号： G01N33/20
摘要： PURPOSE:To measure the Si concentration in a molten metal speedily with high accuracy by setting the thickness of the coating layer of the Si concentration measuring probe to 30-300mum. CONSTITUTION:An element 1 for measuring the Si concentration in the molten metal which is incorporated in the probe for Si concentration measurement is constituted by forming the coating layer on the entire external surface of a solid-state electrolyte 2 in a one-end closed pipe shape, fixing a reference electrode 4 applied with a reference oxygen potential inside, and leading a lead line 5 out of the reference electrode 4. Then the thickness of the coating layer 3 formed on the surface of the solid-state electrode 2 is set to 30-300mum so as to measure the Si concentration in the molten metal with good reproducibility. Consequently, a measurement failure accident due to the dissolution of the coating layer 3, a probe burning accident, etc., due to a decrease in response are eliminated.

8. 发明专利

JP2525099B2 失效
公开(公告)号：JP2525099B2
公开(公告)日：1996-08-14
申请号：JP32884691
申请日：1991-12-12
申请人： OSAKA OXYGEN IND
发明人： MATSUSHIGE HARUHIKO , SHIRAGA SADAYOSHI
IPC分类号： G01N15/14

9. 发明专利

JPH0273147A MEASUREMENT OF ACTIVITY OF SOLUTE ELEMENT IN MOLTEN METAL 失效
公开(公告)号：JPH0273147A
公开(公告)日：1990-03-13
申请号：JP22433688
申请日：1988-09-07
申请人： NIPPON KOKAN KK , OSAKA OXYGEN IND , SASABE MINORU
发明人： SASABE MINORU , HASEGAWA TERUYUKI , ISHIKAWA HIROAKI , KAWAI YOSHIHIKO , FURUTA CHIKAYOSHI , NAGATSUKA TOSHIO , MATSUSHIGE HARUHIKO
IPC分类号： G01N27/411 , C21C5/28 , F27D21/00
摘要： PURPOSE:To detect the activity aM1 of an objective element with high accuracy by determining the oxygen electromotive force E1 and temperature T of a molten metal by use of a solid electrolyte having oxygen ion conductivity and determining the electromotive force E1 of the objective element by use of a solid electrolyte having oxygen conductivity and covered with an oxide which contains the objective element. CONSTITUTION:When an oxygen sensor comprising a solid electrolyte covered with MOx is dipped in a molten metal containing the solute element M, a local equilibrium layer is formed at the interface of the coating and the molten metal. The activity aM1 of the element M in the molten metal is a function of the activity of oxygen a01, activity of oxygen a02 in the equilibrium layer and temperature T, caused by the correlation due to decomposition of the coating layer. The a01 and a02 can be determined from the electromotive force E1 and E2, which means that aM1 becomes a function of E1, E2 and T. As the oxygen electromotive force E1 is taken in consideration on determination of the activity aM1, accuracy of the measurement is improved. Thereby, the activity of element such as Mn, Cr, etc., in a molten metal can be determined with high accuracy.

10. 发明专利

JPH05164680A MEASURING METHOD OF PARTICLE IN LIQUEFIED GAS 失效
公开(公告)号：JPH05164680A
公开(公告)日：1993-06-29
申请号：JP32884691
申请日：1991-12-12
申请人： OSAKA OXYGEN IND
发明人： MATSUSHIGE HARUHIKO , SHIRAGA SADAYOSHI
IPC分类号： G01N15/14
摘要： PURPOSE:To measure the amount of particles in a liquefied gas correctly by promptly evaporating the liquefied gas which is kept sufficiently cold, heating the vaporized gas again and measuring the amount of particles therein. CONSTITUTION:A liquefied gas to be measured, for example, liquefied N2 gas is kept in the sufficiently cooled state by a liquefied gas of the same kind as the to-be-measured gas in a vacuum double pipe of heat insulating material so as not to turn to vapor until it enters an evaporator. When the liquefied gas is to be instantly vaporized in the evaporator, it is preferable to use an oil bath or a water bath as a heat medium. Then, the vaporized gas is heated again to approximately 100 deg.C or higher, more preferably, approximately 200 deg.C or higher to vaporize the ice in the liquefied gas. The particles in the vaporized gas are measured by a laser particle counter. According to this method, it becomes possible to measure the amount of particles in a liquefied gas other than liquefied N2 gas, for instance air, Ar, CO2, He, H2, Ne, O2 or the like.

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