Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Juniper Networks, Inc.

Sintokogio, Ltd.

Michio Kaneko

Kiyonori Tokuno

Hiroshi Kihira

Koki Tanaka

Wataru Hisada

Kazuo Yamagishi

Kazuhiro Takahashi

Hiroshi Shimizu

Mitsuharu Yamagata

Makoto Nagasawa

Yoichi Ikematsu

Yoichi Matsuzaki

Kinichi Kimura

Minoru Ito

Kazuto Kawakami

Kenji Katoh

Teruhiko Hayashi

Shiro Imai

Masatoshi Kominami

Toshiro Terakawa

Takashi Kumai

Junichi Tamenari

Youichi Ikematsu

Takao Wada

Tamotsu Itoh

Mitsuyuki Hasegawa

Suguru Suzuki

Kenji Kato

Takehiro Takahashi

Hiroshi Osawa

Masao Kikuchi

Hiroshi Kanai

Akihiko Takahashi

Shunji Sakamoto

Toshio Tanoue

Naoto Ono

Shoichi Maruyama

Mitsuru Nakayama

Asami Shimomura

Takateru Dekura

Mituyuki Hasegawa

Ruriko Yokoyama

The titanium material includes a titanium oxide layer formed on a surface of titanium being a base material, the titanium oxide layer having a thickness measured by a glow discharge spectrometry of 60 to 300 nm, wherein: the titanium oxide layer contains 0.5 to 7.0 at % of nitrogen, and an arithmetic mean roughness Ra of a surface thereof is 2.0 to 4.0 &#x3bc;m; and a power spectrum of a surface roughness of the titanium material has a peak of an amplitude height of 0.005 to 0.020 &#x3bc;m in a range of a wavelength of 1.1 to 2.5 &#x3bc;m and has a peak of an amplitude height of 0.0010 to 0.0030 &#x3bc;m in a range of a wavelength of 0.80 to 0.98 &#x3bc;m. An L*a*b* color space may be L*: 30 to 40, a*: 2.0 to 9.0, and b*: &#x2212;7.0 to 18.0.

Titanium material

The present invention provides colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment exhibiting a superior resistance to discoloration even when the titanium is used in an environment of harsh acid rain such as a roof or wall material and free from deterioration of the aesthetic appearance over a long period of time, that is, colored pure titanium obtained by the anodic oxidation method, that is, colored pure titanium or titanium alloy having low susceptibility to discoloration in an atmospheric environment characterized by having an average phosphorus content in a range of 40 nm from a surface of a titanium oxide layer formed on the titanium surface of 5.5 atomic % or less and by having an average carbon concentration in a range of a depth of 100 nm from the titanium surface of 3 to 15 atomic %.

Colored pure titanium or titanium alloy having low susceptibility to discoloration in atmospheric environment

The provision of beautiful colored titanium which is excellent in adhesion of the pure titanium or a titanium alloy with the base material, is excellent in photocatalytic activity, and further is excellent in design properties and a method of production of the same which is excellent in productivity and uses an anodic oxidation process is made the object. A titanium-based material having visible light response and excellent in photocatalytic activity characterized in that the material has pure titanium or titanium alloy as a base material, a thickness of a titanium oxide layer which is present on its surface is 0.1 &#x3bc;m to 5.0 &#x3bc;m in range, said titanium oxide layer contains anatase-type titanium dioxide and titanium bonded with hydroxy groups, and further said titanium oxide layer contains nitrogen and carbon respectively in 0.5 to 30 mass %.

Titanium-based material having visible light response and excellent in photocatalytic activity and method of production of same

The present invention provides a polymer electrolyte fuel cell separator made of pure titanium or a titanium alloy superior in contact resistance with carbon paper and a method of production of the same, that is, a separator having a surface layer part to which conductive compound particles are affixed, characterized in that the surface oxide has a thickness of 3 to 15 nm in range, an average carbon concentration in a range from an outermost surface, including the oxide layer, to a depth of 100 nm is 0.02 to 6 at %, and the conductive compound particles have an average particle size of 0.01 to 20 &#x3bc;m. Further, the method of production of the present invention is characterized by forming, blast treating a surface of the formed article by particles comprised of conductive compound particles of an average particle size of 0.01 to 20 &#x3bc;m covering a surface of superhard core particles, impregnating it by a nitric acid aqueous solution of a concentration of 15 to 71 mass % and a temperature of 40 to 100&#xb0; C. for 30 seconds to 180 minutes by spraying or dipping, then washing it.

Polymer electrolyte fuel cell separator made of pure titanium or titanium alloy and method of production of same

A titanium material for a solid polymer fuel cell separator having a low contact resistance and a method of production of the same, the titanium material having at its surface a surface layer structure in which particles of a Ti compound containing either C or N are dispersed, the particles of Ti compound being covered by titanium oxide and/or metal Ti, characterized in that, when analyzed from the surface by XPS, a Ti2p spectrum of TiOis detected, further, at a Ti2p spectral energy range of TiO and/or a Ti2p spectral energy range of metal Ti, a Ti maximum detection peak height is at least 3 times the standard deviations of the background at the respective spectral energy ranges, and at a C1s spectral energy range and N1s spectral energy range, a maximum detection peak height is less than 3 times the standard deviations of the background at the respective spectral energy ranges of C1s and N1s, are provided.

Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of same

The present invention provides a method of production of a separator for a solid polymer type fuel cell characterized by shaping a substrate comprised of stainless steel, titanium, or a titanium alloy and then spraying the substrate surface with superhard core particles comprised of conductive compound particles of an average particle size of 0.01 to 20 &#x3bc;m mixed with a coating material and coated on their surfaces under conditions of a spray pressure of 0.4 MPa or less and a spray amount per cmof the substrate of 10 to 100 g in blast treatment. The ratio of the conductive compound to the mass of the core particles is 0.5 to 15 mass %.

Solid polymer type fuel cell separator and method of production of same

Local concentration of accessing loads on a data buffer during data cell reading is reduced. Also, by providing sufficient time for a data cell reading operation with respect to data cell transmission timing, transmission rate fluctuation of CBR data cells in a transmitting side is reduced. When transmission of a new data stream is added, controller in a cell control unit refers to a transmitted data cell count of VC information processed through a slot immediately before. The controller determines whether a data cell transmitted through the slot immediately before is a head portion of a packet or not. If the data cell transmitted through the slot immediately before is the head portion of the packet, the controller only adds the VC information of the data stream to a shaper link list, and withholds transmission of the data cell. On the other hand, if the data cell transmitted through the slot immediately before is not the head portion of the packet, then the controller adds the VC information of the data stream, and transmits the data cell.

Apparatus and method for data transmission

The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 &#x3bc;m, having a 10-point mean roughness (Rz) of 3 to 20 &#x3bc;m, having an average spacing of surface relief shapes (Sm) of 300 &#x3bc;m or less, having values of a warp rate and twist rate of a separator of 0.1 or less, and having a contact resistance value with respect to carbon paper of 15 m&#x3a9;cmor less at a surface pressure of 1 MPa.

Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separator

The present invention provides a separator for a solid polymer type fuel cell superior in low contact resistance of the fuel cell separator surface with carbon paper and flatness and a method of production of the same, that is, a separator for a solid polymer type fuel cell comprising a substrate of stainless steel or titanium or a titanium alloy having a surface layer part on which conductive compound particles are fixed, wherein said conductive compound particles are comprised of one or more types of metal borides, metal carbides, and metal nitrides with an average particle size of 0.01 to 20 &#x3bc;m, said conductive compound particles are present in a region from said substrate surface to a depth of 10 &#x3bc;m, and a distribution of concentration of the metal element forming the conductive compound in said region satisfies relations between a concentration C of the metal element forming the conductive compound and a depth x from the substrate surface shown by equation &#x3c;1&#x3e; (C=A&#xb7;exp(&#x2212;x/t)+B) and equation &#x3c;2&#x3e; (10&#x2266;A&#x2266;90, &#x2212;4.0&#x2266;B&#x2266;1.0, 0.5&#x2266;t&#x2266;4.0).

A highly corrosion-resistant, rust-prevention coating material comprising:

Highly corrosion-resistant, rust-prevention coating material, highly corrosion-resistant steel, and steel structure

Zn alloy particles for high corrosion resistance rust prevention paint containing, by mass %, Mg: 0.01 to 30% and having a balance of Zn and unavoidable impurities, having physical fracture facets and/or cracks of a length of 0.01 &#x3bc;m or more or cracks of a depth of 0.01 &#x3bc;m or more, having an average particle size of 0.05 to 200 &#x3bc;m, and having an aspect ratio of maximum size and minimum size (maximum size/minimum size) of an average value of 1 to 1.5. Also, a high corrosion resistance rust prevention paint containing these Zn alloy particles and a high corrosion resistance steel material and steel structure coated with that paint.

Zn alloy particles for high corrosion resistance rust protection paint, method of production of particles, high corrosion resistance rust protection paint containing particles, high corrosion resistance steel material coated with paint, and steel structure having steel material

The titanium materials of the present invention have an oxide film on the surface and an interference color of the oxide film. In forming a transparent coating layer on the surface of the titanium materials, provisions are made so that the oxide film has an thickness of 150 nm to 600 nm, or the interference color due to the anodic oxide film is developed by the actions of both wavelengths strengthened and weakened by interference and the color phases of the color developed by the wavelength strengthened by interference and that of complementary colors of the color developed by the wavelength weakened by interference are as close to each as not more than 90 degrees apart on the color wheel, or the L* value on the L*a*b* calorimetric system is not less than 33. The laminated glasses of the present invention having excellent ornamentality comprise at least said titanium sheet interposed between multiple sheet glasses layered together by means of adhesive layers.

Titanium materials with coating layer, laminated glass using the same and methods of manufacturing the same

A network device is provided. The network device includes a controller configured to identify a head portion of a data packet received by the network device, and inhibit a transmission of the head portions of two received data packets from consecutive slots in a transmission cycle.

Titanium material less susceptible to discoloration and method for thereof are provided. Titanium materials less susceptible to discoloration in the atmosphere are obtainable by controlling the fluorine and carbon contents in the oxide film on the surface thereof and the thickness of the oxide film. Such titanium materials are obtainable by dissolving the surface thereof in an aqueous fluonitric acid solution with a nitric acid concentration of not higher than 80 g/l or heat-treating at between 300 and 900&#xb0; C. in a vacuum or in an inert gas atmosphere of argon or helium after dissolving in the aqueous fluonitric acid solution.

Titanium material less susceptible to discoloration and method for production thereof

Growing community of inventors

Futtsu, Japan

Michio Kaneko