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    SYNTHETIC METHOD FOR SPINEL TYPE SILICON NITRIDE POWDER
    172.
    发明专利
    SYNTHETIC METHOD FOR SPINEL TYPE SILICON NITRIDE POWDER 失效

    公开(公告)号：JP2001199714A

    公开(公告)日：2001-07-24

    申请号：JP2000010120

    申请日：2000-01-14

    Applicant: NATL INST FOR RES IN INORGANIC

    Inventor： SEKINE TOSHIMORI ,  GA KORYO ,  KOBAYASHI TAKAMICHI

    IPC: B01J3/08 ,  C01B21/068 ,  C04B35/593

    Abstract: PROBLEM TO BE SOLVED: To convert the low-pressure phase silicon nitride into a large amount of high-pressure spinel type silicon nitride powder in high conversion rate by one operation of the impact treatment. SOLUTION: In the method of producing the high pressure phase spinel type silicon nitride by stress-pressing low pressure phase silicon nitride by means of shock water treatment, the low-pressure phase α-type, β-type and amorphous type of silicon nitride powder with the particle size of =50 wt.%, the mixture is pressure molded so that the void volume of the molding may become =20 GPa.

    METHOD AND DEVICE FOR DECOMPOSING ORGANIC COMPOUND
    173.
    发明专利
    METHOD AND DEVICE FOR DECOMPOSING ORGANIC COMPOUND 失效

    公开(公告)号：JP2001054731A

    公开(公告)日：2001-02-27

    申请号：JP23343999

    申请日：1999-08-20

    Applicant: UNIV NAGOYA

    Inventor： ENDO TAKUMA

    IPC: A62D3/10 ,  A62D101/08 ,  A62D101/22 ,  A62D101/28 ,  B01J3/08 ,  C07B35/06 ,  C07B61/00 ,  A62D3/00

    Abstract: PROBLEM TO BE SOLVED: To decompose the org. compd. such as org. chlorine compd. with a relatively inexpensive and small sized device and to increase the utilization efficiency of input energy to the device even in the case that the operation time of the device is short and start and stop of operation of the device are performed many times. SOLUTION: In the decomposition method, a target 2 consisting of a solid to be treated containing at least org. compd. is housed in a shock wave reflective vessel 1 formed of a material having higher impact impedance than that of the solid to be treated. A high speed flying body 4 is collided with the target 2. In such a way, the org. compd. is decomposed by subjected the target 2 to shock compressing. And also the target 2 is ejected to the outside of the vessel to subject the target 2 to adiabatic expansion, so that the resynthesis of the org. compd. is prevented.

    SYNTHESIS DEVICE USING IMPULSE WAVE AND METHOD FOR SYNTHESIZING HIGH PRESSURE-PHASE MATERIAL
    176.
    发明专利
    SYNTHESIS DEVICE USING IMPULSE WAVE AND METHOD FOR SYNTHESIZING HIGH PRESSURE-PHASE MATERIAL 失效

    公开(公告)号：JPH0957089A

    公开(公告)日：1997-03-04

    申请号：JP21925895

    申请日：1995-08-28

    Applicant: NIPPON OILS & FATS CO LTD

    Inventor： ITO SHIGERU ,  KUROYAMA YUTAKA ,  ITO KENJI ,  SAKAKIBARA IKUO

    IPC: B01J3/08

    Abstract: PROBLEM TO BE SOLVED: To provide the synthesis device using an impulse wave by which a loaded explosive is allowed to effectively function in synthesis and the synthesis per detonation of the explosive is increased to improve the productivity and capable of producing an industrially useful high pressure-phase material at a low cost and to furnish the synthesis method. SOLUTION: A long-sized explosive 13 to be extended in the longitudinal direction is inserted into a supply hole 12 in the center of a support 11 and supported. A body 20 to be shocked is placed in a holding vessel 16, opposed to the explosive 13 and arranged along the explosive 13. Both side walls 21 as a converging means are formed in the support 11 between the explosive 13 and body 20 and tapered toward the body 20 from the explosive 13, and water 22 is filled as a pressure medium.

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