-
公开(公告)号：JPH1194725A
公开(公告)日：1999-04-09
申请号：JP26817797
申请日：1997-09-12
Applicant: AGENCY IND SCIENCE TECHN , CERAMICS SUIKA SOSEIKEI GIJUTS
Inventor： SHIBAZAKI YASUO , ODA KIICHI , SANO SABURO , TOMONO TAKUMI , OGURI KENTA , KAWAI HIDEJI , NOMURA YUJI , ONO AKIRA
Abstract: PROBLEM TO BE SOLVED: To correctly measure plasticity of kneaded earth by adding pressure by a piston to the elastic body stored in a cylinder chamber, extruding the kneaded earth through a capillary, and obtaining a shear stress and a shear velocity from an extrusion pressure at the time, etc. SOLUTION: A kneaded earth 18 as a sample is pressed into a cylinder chamber 10. A piston 16 is pressed to extrude the kneaded earth 18 from a capillary 14. An extrusion pressure is measured by a pressure sensor 20. A shear stress and a shear velocity are obtained from the measured extrusion pressure, an extrusion speed and a size of the capillary 14. At this time, a pressure loss of the extrusion pressure applied by the piston 16 into the capillary 14 through the cylinder chamber 10 is corrected with a length of the capillary, so that a true shear stress is obtained. The true shear stress is obtained under various shear velocities, and a relationship of the shear velocity and shear stress is induced. A fluidity and a shape retention of the plastic body 18 are obtained from the relationship of the shear velocity and shear stress, and whether the kneaded earth has good plasticity or not is judged.
-
公开(公告)号：JPH07307159A
公开(公告)日：1995-11-21
申请号：JP26443093
申请日：1993-10-22
Applicant: AGENCY IND SCIENCE TECHN , FUJI ELECTRIC CO LTD
Inventor： ODA KIICHI , SHIBAZAKI YASUO , SHIMIZU KAZUSHI , YOSHIDA SHIZUYASU
Abstract: PURPOSE:To provide a two layer aggregate with no warp and no break by arranging an electrode plate made of a porous body formed by sintering ceramic coarse powder through binder fine powder and a solid electrolyte body made of a dense body formed by sintering zirconia solid electrolyte coarse powder through zirconia solid electrolyte fine powder. CONSTITUTION:A 100-200um thick dense solid electrolyte body 2 made of zirconia is formed on the plane surface of a 3mm thick anode plate 1. A groove 5 is formed on the gas supply side of the anode plate 1. Each component of a two layer aggregate of the solid electrolyte body/the anode plate is produced in the following way. The anode plate 1 is a porous body and produced by sintering the coarse powder of a porous ceramic comprising zirconia, alkali earth element- or rare earth element-doped lanthanum manganite, lanthanum nickelite, lanthanum cobaltite, lanthanum chromite, or a mixture of them through fine powder of a sintering agent (such as silica and alumina). The solid electrolyte body 2 is a dense body and produced by sintering the coarse powder of a zirconia solid electrolyte through the fine powder of the zirconia solid electrolyte.
-
公开(公告)号：JPH09221323A
公开(公告)日：1997-08-26
申请号：JP5413996
申请日：1996-02-15
Applicant: AGENCY IND SCIENCE TECHN , TODA KOGYO CORP
Inventor： SHIBAZAKI YASUO , ODA KIICHI , SANO SABURO , YAMAMOTO SHIGEHISA , HORIISHI NANAO
Abstract: PROBLEM TO BE SOLVED: To industrially mass-produce an inorg. powdery pigment excellent in heat resistance, assuming various clear hues and not causing environmental pollution. SOLUTION: This inorg. powdery pigment is a powdery multiple metal oxide contg. Ti and two kinds of divalent metals M1 and M2 selected from among Mg, Fe, Ni and Co. In the multiple metal oxide, the atomic ratio of M1+M2 to Ti is 1 and the atomic ratio of M1:M2 is within a range of 95:5 to 5:95. This pigment is obtained. by heat-baking a mixture of M1 and M2 compound powder with TiO2 powder in the temp. range of 1,000-1,350 deg.C and pulverizing the resultant product.
-
公开(公告)号：JPH072568A
公开(公告)日：1995-01-06
申请号：JP28201591
申请日：1991-10-03
Applicant: AGENCY IND SCIENCE TECHN , YOSHIDA KOGYO KK
Inventor： SHIBAZAKI YASUO , ODA KIICHI , FUKUDA YUSHI
IPC: C04B35/632 , C04B35/10
Abstract: PURPOSE:To provide an alumina material excellent in plasticity. CONSTITUTION:This alumina plastic material is prepared by blending and kneading a plate-shaped powdery alumina having
-
公开(公告)号：JPH06263430A
公开(公告)日：1994-09-20
申请号：JP16216591
申请日：1991-06-06
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MAEDA MASAKI , ODA KIICHI , SHIBAZAKI YASUO , TONE YUKIHITO
Abstract: PURPOSE:To provide a method for improving the plasticity of kaolinite particles by which the molding of the kaolinite particles is enabled without adding a binder, etc., by improving the plasticity of the kaolinite particles themselves having low plasticity. CONSTITUTION:Kaolinite particles are brought into contact with an aq. soln. contg. divalent cations and the cations are adsorbed on the surfaces of the kaolinite particles by ion exchange to increase WR value and CV value as indexes evaluating the plasticity of kaolinite particles.
-
Patent Agency Ranking
公开(公告)号：JP2001048638A
公开(公告)日：2001-02-20
申请号：JP21855999
申请日：1999-08-02
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HOTTA YUJI , ODA KIICHI , SANO SABURO , TOMONO TAKUMI
IPC: C04B35/115 , C04B35/622
Abstract: PROBLEM TO BE SOLVED: To produce translucent alumina in slurry casting using a gypsum mold. SOLUTION: When a molding produced by the casting of an alumina slurry using a gypsum mold is sintered to produce an alumina sintered body, the molding is freed of impurities derived from the gypsum mold by acid treatment to enhance the translucency of the alumina sintered body. An alumina slurry is poured into a gypsum mold to form a molding, this molding is dried, calcined and immersed in an acid to remove contaminants from the molding contaminated with gypsum components in casting and drying, and then the molding is dried and sintered to obtain the objective translucent alumina.
-
公开(公告)号：JP2000133983A
公开(公告)日：2000-05-12
申请号：JP30754398
申请日：1998-10-28
Applicant: AGENCY IND SCIENCE TECHN , KOKUSAI KIBAN ZAIRYO KENKYUSHO
Inventor： INUI TETSUJI , ODA KIICHI , KONISHI KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide a matching radio wave absorbing body which can be easily regulated in matching frequencies and whose matching frequencies can be widened in band width. SOLUTION: A matching-type radio wave absorbing body is equipped with a radio wave absorbing medium lined with a metallic body. The radio wave absorbing medium is a magnetic material layer, and a laminate composed of a radio wave absorbing medium layer and the metallic layer is laminated into a laminate which functions as a resonator possessed of two resonant modes of two different resonant frequencies to the radio wave absorbing medium layer of the same thickness as that of the laminate. The resonant frequency f1 of one resonant mode out of two different resonant modes that belong to the resonator is less than frequencies where the frequency dispersion of the permeability of the radio wave absorbing medium becomes a constant, the other resonant frequency f2 is more than the frequencies where the frequency dispersion of the permeability of the radio wave absorbing medium becomes a constant. By a combination of these two modes, the radio wave absorption characteristics of a radio wave absorbing body of this constitution is determined on a load Q in a state where two modes are combined, and the radio wave absorbing body is widened in the band width of radio waves to absorb. A resonator is regulated in operating frequency band by adjusting a radio wave absorbing medium layer in thickness and permittivity.
-
公开(公告)号：JPH1183719A
公开(公告)日：1999-03-26
申请号：JP24821997
申请日：1997-09-12
Applicant: AGENCY IND SCIENCE TECHN , CERAMICS SUIKASO SEIKEI GIJUTS
Inventor： SHIBAZAKI YASUO , ODA KIICHI , SANO SABURO , TOMONO TAKUMI , KAWAI HIDEJI , OGURI KENTA , NOMURA YUJI , ONO AKIRA
Abstract: PROBLEM TO BE SOLVED: To provide a method for evaluating plasticity of a tempered soil wherein plasticity of a tempered soil under such condition as close to a closed space is evaluated with ease. SOLUTION: At a bottom part of a cylinder 1, a nozzle plate 3 comprising a nozzle hole 2 is fixed with a lock nut 4. A sample S sandwiched between filter papers F is put in the cylinder 1, and pressed by a piston 5. The sample S is pressurized to reduce its volume. Solid volume ratio between when pressurized under low pressure and when under a high pressure is measured, and plasticity is evaluated from its difference. The larger the solid volume ratio difference between when pressurized under low pressure and pressurized under high pressure, the more preferable the filling characteristics of a tempered soil in a closed space.
-
公开(公告)号：JPH06316413A
公开(公告)日：1994-11-15
申请号：JP32466492
申请日：1992-11-11
Applicant: AGENCY IND SCIENCE TECHN , Y K K KK
Inventor： SHIBAZAKI YASUO , ODA KIICHI , FUKUDA YUSHI
Abstract: PURPOSE:To efficiently produce a lamellar alumina particle suitable for a pigment for coating material or a raw material for ceramics. CONSTITUTION:This producing method is one by containing or adding a crystal control agent (NaOH, Na2SiO3 or the like) into a aluminum hydroxide or alumina hydrate adjusted in particle size and hydrothermal synthesis treating (at >=350 deg.C, -0.022mol and 2.25X10-3-0.090mol per 1mol Al(OH)3 respectively. As a result, the lamellar alumina particle uniform in particle diameter and large in aspect ratio is obtained and the particle has excellent effect for applications such as the pigment for coating material, for ceramics molding and for an abrasive material. And the lamellar alumina particle is obtained even by using a low purity raw material.
-
公开(公告)号：JPH0517132A
公开(公告)日：1993-01-26
申请号：JP19366891
申请日：1991-07-09
Applicant: AGENCY IND SCIENCE TECHN , YOSHIDA KOGYO KK
Inventor： SHIBAZAKI YASUO , ODA KIICHI , FUKUDA YUSHI
Abstract: PURPOSE:To efficiently obtain fine plate particles of alumina having uniform particle diameter of submicron order by adjusting the particle diameter of aluminum hydroxide, etc., and subjecting the aluminum hydroxide to hydrothermal treatment under specific condition in water or an aqueous solution of an alkali. CONSTITUTION:The starting raw material consisting of aluminum hydroxide or hydrated alumina is crushed and adjusted to the particle size of submicron order. The starting raw material having adjusted particle size is filled in an autoclave together with water or an aqueous solution of an alkali (sodium hydroxide or sodium carbonate) and subjected to hydrothermal treatment at >=350 deg.C under a pressure of
-
-
-
-
-
-
-
-
-
Search Results
30
records
(took 0.031 seconds)
