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Sagamihara, Japan

Fu J.,Ohara Inc.
Materials Letters | Year: 2012

Glass ceramics were prepared by heat-treating 20P 2O 5-75TiO 2-2Al 2O 3-3(Na 2O, MgO) (mol%) glasses at temperatures between 700 °C and 900 °C for 4 h and their photocatalytic activity was investigated. Anatase-type TiO 2 crystals as the only or main crystalline phase were precipitated with a mean size in the range of 20-70 nm. The glass ceramics efficiently decomposed methylene blue (MB) under UV irradiation and the decomposition ability increased with an increase of the anatase crystalline phase content. © 2011 Elsevier B.V. All rights reserved.

Fu J.,Ohara Inc.
Materials Letters | Year: 2014

Glass ceramics containing Nasicon-type crystal MgTi4(PO 4)6 were prepared by heat-treating MgO-TiO 2-P2O5-SiO2 glasses, and their photocatalytic activities were evaluated by the decomposition of methylene blue (MB) and acetaldehyde, and measuring the water contact angle under UV irradiation. Highly photocatalytic oxidization ability and super-hydrophilicity were observed. These properties are comparable with those of the TiO 2-coated photocatalyst. © 2013 Elsevier B.V.

Fu J.,Ohara Inc.
Materials Research Bulletin | Year: 2013

Glass ceramics were prepared by heat-treating MO-TiO2-P 2O5 (M = Mg, Ca, Sr and Ba) and R2O-TiO 2-P2O5-SiO2 (R = Li, Na and K) glasses, and their photocatalytic activity was investigated. The crystalline phases precipitated in the glasses were only Nasicon-type crystals, MTi 4(PO4)6 or RTi2(PO4) 3. Decomposition experiments of both methylene blue (MB) and acetaldehyde showed that the glass ceramics exhibited effective photocatalytic activity. The activity did not depend on the radius of the M2+ or R+ ion, and higher activity was observed in the MgTi 4(PO4)6 and CaTi4(PO 4)6 precipitated glass ceramics. © 2012 Elsevier Ltd.

Ohara Inc. | Date: 2013-05-15

An all-solid secondary battery has first electrode layers, and second electrode layers laminated on both sides of the first electrode layer with solid electrolyte layers placed in between, wherein at least one first opening is provided which penetrates the first electrode layer and the solid electrolyte layers adjacent to the first electrode layer, and the second electrode layers present on both sides of the first electrode layer are in contact with each other on the inside of the first opening.

It is an object of the present invention to provide a crystallized glass which has various properties required for employing the substrate for information recording medium of the next generation, and also has significantly low specific gravity; and a crystallized glass substrate for information recording medium. A crystallized glass containing, as a crystal phase, one or more selected from RAl

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