CONTROLLING OF CRYSTAL GROWTH DIRECTION

    公开(公告)号:JPH0383892A

    公开(公告)日:1991-04-09

    申请号:JP22215889

    申请日:1989-08-29

    Abstract: PURPOSE:To readily control crystal growth direction by decomposing gas of an oxygen-containing metallic compound with light irradiation, forming a thin film-like crystal of metal oxide on a base plate and growing the crystal to direction of light irradiation. CONSTITUTION:A base plate 2 is installed in a chamber 1 and gas of an oxygen- containing metallic compound (e.g. tantalum pentamethoxide gas) is introduced into the chamber 1 together with carrier gas 7. Simultaneously, light 4 from light source 11 is irradiated to the base plate 2 and the gas of oxygen-containing metallic compound is decomposed, then thin film-like crystal of metal oxide (e.g. tantalum pentoxide) is formed on the base plate, thus said crystal is grown to the irradiated direction of the light 4. By said method, the crystal growth direction is able to be controlled to a desired direction by controlling angle of the base plate 2 to the light 4, then various chemical and physical properties of the thin film are able to be controlled.

    LEAD OXIDE COATED ELECTRODE FOR ELECTROLYSIS AND ITS PRODUCTION

    公开(公告)号:JPS6357791A

    公开(公告)日:1988-03-12

    申请号:JP20128786

    申请日:1986-08-29

    Abstract: PURPOSE:To produce a dense electrode having superior adhesion and a long service life and producing little internal strain during electrodeposition by successively forming an underlayer contg. Pt and Pd oxide, an intermediate layer of alpha-PbO2 and a coating layer of beta-PbO2 on a substrate of a corrosion resistant metal. CONSTITUTION:A plate, a porous plate, a bar or the like of a corrosion resistant metal such as Ti, Zr, Nb, Ta or an alloy thereof is used as a substrate. The surface of the substrate is preferably made uneven so as to increase the surface area. An underlayer contg. Pt and/or Pd oxide is formed on the surface of the substrate so as to protect the substrate and to improve the adhesion to an intermediate layer. In the underlayer, Pt is usually metallic but Pd is required to be oxide because metallic Pd has inferior corrosion resistance. An intermediate layer of alpha-PbO2 acting chiefly as a binder is the formed on the underlayer and a coating layer of beta-PbO2 is further formed on the intermediate layer. The coating layer has a great affinity for the intermediate layer.

    ELECTROCHEMICAL PRODUCTION OF CYCLOHEXANOL OR ITS ESTER

    公开(公告)号:JPS62263988A

    公开(公告)日:1987-11-16

    申请号:JP10818686

    申请日:1986-05-12

    Abstract: PURPOSE:To electrochemically produce cyclohexanol or an ester thereof at a high conversion rate by adding a supporting electrolyte to a soln. of cyclohexane in a fatty acid and electrolyzing the resulting electrolytic soln. CONSTITUTION:Cyclohexane is dissolved in a fatty acid such as acetic acid and a supporting electrolyte consisting essentially of sulfuric acid and water is added. The resulting electrolytic soln. is electrolyzed at about 1.5-2.6V anode potential basing on the potential of a satd. calomel electrode. By the electrolysis, the cyclohexane is electrochemically oxidized on the surface of the anode to produce cyclohexanol. This cyclohexanol bonds nonelectrochemically to the fatty acid as a solvent, producing cyclohexyl ester.

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