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    SUPERCONDUCTIVE WHISKER COMPOSITE PRODUCT AND ITS PRODUCTION
    1.
    发明专利
    SUPERCONDUCTIVE WHISKER COMPOSITE PRODUCT AND ITS PRODUCTION 失效

    公开(公告)号：JPH0812422A

    公开(公告)日：1996-01-16

    申请号：JP17318494

    申请日：1994-06-30

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： FUNAHASHI RYOJI ,  MATSUBARA ICHIRO ,  OGURA TORU ,  YAMASHITA HIROSHI ,  HAYAKAWA JUNJI ,  ISHIKAWA HIROSHI

    IPC: C04B35/45 ,  C01G1/00 ,  C01G29/00 ,  C30B29/62 ,  H01B12/00 ,  H01B12/02

    Abstract: PURPOSE:To obtain a highly densified superconductive product containing highly oriented superconductive whiskers each comprising a single crystal excellent in the superconductive characteristics and solving the problem of weak bonds on the particle boundary. CONSTITUTION:The oxide superconductive whisker composite product comprises oxide superconductive whiskers and oxide superconductive powdery crystals. The superconductive whiskers and the superconductive powdery crystals both comprise Bi, Sr, Ca, Cu and O, and have a Bi2Sr2CaCu2O8 structure. The content of the superconductive whiskers is 5-40wt.% based on the whole weight of the whisker composite product. The method for producing the superconductive whisker composite product comprises hot-pressing and sintering a mixture comprising (a) 5-40wt.% of oxide superconductive whiskers comprising the Bi, Sr, Ca, Cu and 0 and having the Bi2Sr2CaCu2O8 structure and (b) 95-60wt.% of oxide superconductive powdery crystals comprising the Bi, Sr, Ca, Cu and 0 and having the Bi2Sr2CaCu2O8 structure.

    CRYSTALLIZED GLASS FOR SUBSTRATE OF MAGNETIC HEAD OR MAGNETIC DISC AND ITS PRODUCTION
    3.
    发明专利
    CRYSTALLIZED GLASS FOR SUBSTRATE OF MAGNETIC HEAD OR MAGNETIC DISC AND ITS PRODUCTION 失效

    公开(公告)号：JPH0692680A

    公开(公告)日：1994-04-05

    申请号：JP24765792

    申请日：1992-09-17

    Applicant: AGENCY IND SCIENCE TECHN ,  SANYO ELECTRIC CO

    Inventor： SUZUKI MORIYA ,  HAYAKAWA JUNJI ,  TAMADA JOICHI

    IPC: C03C10/12 ,  G11B5/127 ,  G11B5/31 ,  G11B5/73 ,  G11B5/733 ,  G11B5/82

    Abstract: PURPOSE:To obtain a crystallized glass for substrate, improved in processability by crystallizing and heat-treating glass raw materials obtained by adding one or more oxides of Al2O3, ZnO, CaO and Fe2O3 to Li2O and SiO2 of a specific ratio of Li2O/SiO2 and melting and solidifying the mixture and depositing the resultant crystal. CONSTITUTION:0.5-5wt.% one or more oxides of ZrO2 and TiO2 as a nucleus forming agent or 0.001-0.01wt.% one or more metals among Pt, Au an Ag are added to a glass component consisting of a blend of 1 mol Li2O, 1-2mol SiO2, 0.001-0.1mol Al2O3, 0.01-0.15mol P2O5 and 0.01-0.17mol and the mixture is melted and solidified. This solid glass is heated up to 500-800 deg.C nucleus forming temperature at a rate of 60-80 deg.C/hr and kept for a prescribed time at this temperature to form nucleus and then heated up to 850-1200 deg.C crystallization temperature at a rate of 60-80 deg.C/hr and kept for a prescribed time at this temperature to crystallize the glass. Then the temperature of the glass is lowered at a rate of 150-300 deg.C/hr to provide the objective crystallized glass having / deg.C coefficient of linear expansion and >=600 Vickers hardness HV.

    INFRARED-TRANSPARENT GLASS
    5.
    发明专利
    INFRARED-TRANSPARENT GLASS 失效

    公开(公告)号：JPS61197445A

    公开(公告)日：1986-09-01

    申请号：JP3730485

    申请日：1985-02-26

    Applicant: AGENCY IND SCIENCE TECHN ,  SUMITA OPTICAL GLASS

    Inventor： NOGAMI MASAYUKI ,  HAYAKAWA JUNJI ,  MAKIHARA MASAKI ,  SAWANOBORI SHIGETO

    IPC: C03B13/04 ,  C03C3/32 ,  C03C4/00 ,  C03C4/10 ,  C03C13/04

    Abstract: PURPOSE:The titled glass transmitting infrared rays, having high glass transition temperature, and a few restriction to use conditions, comprising ZnBr2, MBr (M is alkali metal), and CaBr2 as essential components, and making the composition ratio be in a specific range. CONSTITUTION:Infrared-transparent glass comprising ZnBr2, MBr (M is alkali metal) and CaBr2 as essential components, making the composition ratio be in a range enclosed with straight lines connecting the points A(65,35,0), B(60,20,20), C(50,25,25), D(40,35,25), E(40,55,5), and F(45,5,0) in the molar ratio triangular component diagram shown by the figure. The infrared-transparent glass can transmit infrared rays up to 25mum, and can be processed into any shape. Further the glass has a glass transition temperature reaching 80-90 deg.C, and has improved heat stability. It is useful as glass fiber for optical communication, infrared-transparent lens, etc.

    UV-TRANSPARENT ELECTRIC CONDUCTOR
    6.
    发明专利
    UV-TRANSPARENT ELECTRIC CONDUCTOR 失效

    公开(公告)号：JP2000281346A

    公开(公告)日：2000-10-10

    申请号：JP8523199

    申请日：1999-03-29

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MIZOGUCHI HIROSHI ,  KITAMURA NAOYUKI ,  FUKUMI KOHEI ,  MAKIHARA MASAKI ,  HAYAKAWA JUNJI ,  NISHII JUNJI

    IPC: C01G39/00 ,  C01G41/00

    Abstract: PROBLEM TO BE SOLVED: To provide a UV-transparent electric conductor having a transmission region extended to a UV region by using a material having a perovskite crystal structure or a material having an Na-site-defective perovskite crystal structure. SOLUTION: This transparent electric conductor consists of a material that has a perovskite crystal structure and is represented by the compositional formula RMoO3 (wherein R is Ca, Sr or Ba) or another material that has an Na-site- defective perovskite crystal structure and is represented by the compositional formula NaxWO3 (wherein 0.3

    PRODUCTION OF TRANSPARENT ALUMINA
    7.
    发明专利
    PRODUCTION OF TRANSPARENT ALUMINA 失效

    公开(公告)号：JPH0416550A

    公开(公告)日：1992-01-21

    申请号：JP11675490

    申请日：1990-05-08

    Applicant: AGENCY IND SCIENCE TECHN ,  MITSUBISHI HEAVY IND LTD

    Inventor： HAYAKAWA JUNJI ,  MAKIHARA MASAKI ,  FUJITA AKIJI ,  MURAKAMI YUICHIRO

    IPC: C04B35/115 ,  C04B35/10

    Abstract: PURPOSE:To produce transparent alumina by successively concentrating light to a bar-shaped alumina sintered body mixed with a light absorbent only at the front end from the front end, thereby melting the front end. CONSTITUTION:For example, a slurry prepd. by mixing the alumina having 0.6mu average grain size and 99.8% purity and cobalt oxide of 1wt.% of this alumina, water, and binder is poured into a gypsum mold (half split molds) matching with the alumina sintered body. The slurry prepd. by mixing the same alumina, water and binder as mentioned above is then poured into the mold to obtain the green alumina molding having the cobalt oxide existing only at the front end. The molding is calcined for 2 hours at 1200 deg.C to obtain the alumina sintered body 1. The sintered body is installed in a bielliptic heating furnace and while the sintered body 1 is rotated, the sintered body is begun to be heated from the lower part added with the cobalt oxide and the focus of the light is moved upward at 5cm/hour speed. Consequently, the transparent part 1' consisting of the alumina alone solidified after melting is obtd.

    MEASUREMENT OF REFRACTIVE INDEX FOR SHEET-SHAPED SAMPLE
    8.
    发明专利
    MEASUREMENT OF REFRACTIVE INDEX FOR SHEET-SHAPED SAMPLE 失效

    公开(公告)号：JPH03216535A

    公开(公告)日：1991-09-24

    申请号：JP1327590

    申请日：1990-01-22

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KITAMURA NAOYUKI ,  KITAOKA TAKESHI ,  HAYAKAWA JUNJI ,  YAMASHITA HIROSHI

    IPC: G01N21/41

    Abstract: PURPOSE:To achieve a higher accuracy of measurement by arranging a measuring sample as synthetic prism in parallel with a thick prism with a known refractive index to calculate a refractive index of the measuring sample from an angle of deviation of incoming and outgoing light with respect to the synthetic prism. CONSTITUTION:A measuring prism 2 comprising a sheet wedge shaped sample to be measured is arranged to be a synthetic prism in parallel with a thick prism 1 with a known refractive index and a refractive index of the sheet wedge-shaped sample is determined from an angle theta of deviation of incoming light A and outgoing light B with respect to the synthetic prism. As a result, when the sheet wedge-shaped sample is placed in front of the thick prism 1, light dispersed at a light angle with the sheet wedge-shaped sample is further dispersed at an angle of deviation known with the thick prism 1 to obtain a spectral line separated clearly. When the sample is placed in the rear thereof, the light dispersed at the known angle of deviation with the thick prism 1 is further dispersed with the sheet wedge-shaped sample to obtain a spectral line separated clearly as a whole. Thus, in either case, a highly accurate measurement is possible.

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