Toto Ltd.

Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

The Furukawa Electric Co., Ltd.

National Institute of Information and Communications Technology, Incorporated Administrative Agency

Konica-minolta Holdings, Inc.

National Institute of Information and Communications Technology, Incorporated

Nippon Steel & Sumikin Engineering Co., Ltd.

Morimura Sofc Technology Co., Ltd.

Communications Research Laboratory Independent Administrative Institute

Akira Kawakami

Hideki Fujii

Naoki Watanabe

Kazuhiro Takahashi

Shigeru Ando

Yuuji Suzuki

Satoshi Fujisawa

Yuya Takahashi

Takami Moteki

Kazuhiro Hoshino

Atsushi Saito

Takuya Hara

Yutaka Momiyama

Shuichiro Saigan

Tomonori Kunieda

Yasuo Kakinuma

Zhen Wang

Megumi Shimazu

Akira Ishiguro

Hisashi Shimakage

Hiroshi Niimi

Kenichi Mori

Hiroshi Kita

Yuji Suzuki

Hiroshi Ohta

Hitoshi Asahi

Yoshiyuki Suzuri

Toshiharu Otsuka

Hiroshi Tamehiro

Akio Matsumoto

Nobuo Isaka

Toshiaki Matsui

Takuya Matsuo

Takuya Hoshiko

Shuhei Tanaka

Takeo Uno

Akihiro Itoh

Tatsuo Yamazaki

Tomoyuki Kitaura

Yoshihisa Shirai

Taro Muraki

Chihiro Kobayashi

Teruhiko Hayashi

Fumio Tsuboi

Motomi Masaki

Ryotaro Miyoshi

Keita Suzumura

Masayuki Igarashi

Masato Ota

Satoshi Matsuoka

Tatsuya Goto

Shinya Nishiyama

Asahi Hitoshi

An α+β type titanium alloy wire contains, in mass %, Al: 4.50 to 6.75%, Si: 0 to 0.50%, C: 0.080% or less, N: 0.050% or less, H: 0.016% or less, O: 0.25% or less, Mo: 0 to 5.5%, V: 0 to 4.50%, Nb: 0 to 3.0%, Fe: 0 to 2.10%, Cr: 0 to less than 0.25%, Ni: 0 to less than 0.15%, Mn: 0 to less than 0.25%, and the balance being Ti and impurities, the contents of Al, Mo, V, Nb, Fe, Cr, Ni, and Mn satisfying an equation, in which an average aspect ratio of an α crystal grain is 1.0 to 3.0, a maximum crystal grain diameter of the α crystal grain is 30.0 μm or less, an average crystal grain diameter of the α crystal grain is 1.0 to 15.0 μm.

α+β type titanium alloy wire and manufacturing method of α+β type titanium alloy wire

An &#x3b1;+&#x3b2; titanium alloy extruded shape containing, in mass %, Al: 5.5 to 6.8%, V: 3.5 to 5.8%, and Fe: over 0 to 0.30%, the balance being Ti and impurities, the impurities amounting to a total of 0.4% or less, the alloy including an acicular microstructure in which an average prior &#x3b2; grain size is 250 &#x3bc;m or less.

&#x3b1;+&#x3b2;titanium alloy extruded shape

To provide a fuel cell stack device that is applicable to miniaturization of the device and does not require a pipe for discharging off-gas up to a combustion section. A fuel cell stack device including: a first manifoldfor supplying fuel gas supplied from a reformerto a plurality of fuel cells provided in a first cell stack from above, the first manifold being connected to upper ends of the plurality of fuel cells provided in the first cell stack; and a second manifoldfor recovering fuel gas discharged from the first cell stack, and supplying the recovered fuel gas to the plurality of fuel cells provided in the second cell stack from below, the second manifold being connected to lower ends of the plurality of fuel cells provided in the second cell stack

Fuel cell stack device and fuel cell device

Provided is an &#x3b1;+&#x3b2; titanium alloy hot-rolled sheet consisting of, in mass %, Al: 4.7 to 5.5%, Fe: 0.5 to 1.4%, N: less than or equal to 0.03%, Si: 0.15 to 0.40%, a ratio of Si/O: 0.80 to 2.80, [O]in Expression (1): more than or equal to 0.13% and less than 0.25%, and the balance: Ti and impurities. In a case where an ND direction represents a normal direction of the hot-rolled sheet, a TD direction represents a sheet-width direction of the hot-rolled sheet, a c-axis orientation represents a normal direction of a (0001) plane in an &#x3b1; phase, XND represents a strongest intensity among X-ray (0002) reflection relative intensities of crystal grains in which the c-axis orientation is in a range of 30&#xb0; from the ND direction, and XTD represents a strongest intensity among intensities in which the c-axis orientation is in a range of &#xb1;10 degrees in the TD direction, XTD/XND is more than or equal to 4.0, a Young's modulus in the sheet-width direction is more than or equal to 135 GPa, and tensile strength in the sheet-width direction is more than or equal to 1100 MPa,[=[]+2.77[&#x2003;&#x2003;Expression (1).

Titanium alloy having high strength, high young's modulus, excellent fatigue properties, and excellent impact toughness

An object of the present invention is to provide an &#x3b1;+&#x3b2; titanium alloy cold-rolled and annealed sheet having a high strength and a high Young's modulus in the sheet width direction. A titanium alloy sheet in which, when the texture in the sheet plane direction is analyzed, the ratio XTD/XND between the X-ray relative intensity peak value (XTD) in directions close to the sheet width direction and the X-ray relative intensity peak value (XND) in directions close to the normal-to-sheet-plane direction on the (0002) pole figure of the &#x3b1;-phase is 5.0 or more and which contains, in mass %, Fe: 0.8% to 1.5% and N: 0.020% or less and has an oxygen-equivalent Q of 0.34 to 0.55. Annealing of the titanium alloy sheet is performed at not less than 500&#xb0; C. and less than 800&#xb0; C. in the case where the cold rolling rate is less than 25% and at not less than 500&#xb0; C. and less than 620&#xb0; C. in the case where the cold rolling rate is 25% or more.

&#x3b1;+&#x3b2; titanium alloy cold-rolled and annealed sheet having high strength and high young's modulus and method for producing the same

The present invention provides, as a material for a golf club face of a driver, an iron or the like, a titanium alloy which satisfies the regulation for a coefficient of restitution, and has high Young's modulus and tensile strength and also has excellent hot and cold workability. The titanium alloy for a golf club face according to the present invention comprises, in percent by mass, 1.0 to 3.5% of Al, 0.5 to 1.4% of Fe, 0.2 to 0.5% or O and 0.002 to 0.030% of N, and the balance of Ti with inevitable impurities, wherein an &#x3b1;-phase is strengthened by combined addition of O and Al, and inexpensive Fe is selected as a &#x3b2;-phase stabilizing element, leading to high strength and high Young's modulus in combination. The content of Al causing deterioration of hot workability is limited to a low value, leading to low rolling load during hot rolling, and thus flaws and edge cracking are unlikely to occur during hot rolling.

Titanium alloy for golf club face

A high-strength &#x3b1;+&#x3b2; type hot-rolled titanium alloy sheet containing 0.8 to 1.5 mass % Fe, 4.8 to 5.5 mass % Al, 0.030 mass % N, O and N, wherein cracks are prevented from spreading, wherein: (a) ND represents normal direction of a hot-rolled sheet; RD represents hot rolling direction; TD represents hot rolling width direction; &#x3b8; represents the angle formed between c axis and ND; &#x3c6; represents angle formed between plane including c axis and ND, and a plane including ND and TD; (b1) XND represents highest (0002) relative intensity of X-ray reflection by grains when &#x3b8; is from 0&#xb0; to 30&#xb0; ; (b2) XTD represents the highest (0002) relative intensity of the X-ray reflection caused by grains when &#x3b8; is from 80&#xb0; to 100&#xb0; and &#x3c6; is &#xb1;10&#xb0; . (c) The high-strength &#x3b1;+&#x3b2; type hot-rolled titanium alloy sheet has a value for XTD/XND of at least 4.0. Q(%)=[O]+2.77&#xb7;[N].

High-strength &#x3b1;+&#x3b2; titanium alloy hot-rolled sheet excellent in cold coil handling property and process for producing the same

An &#x3b1;+&#x3b2; type hot-rolled titanium alloy sheet, wherein: (a) ND represents the normal direction of a hot-rolled sheet; RD represents the hot rolling direction; TD represents the hot rolling width direction; &#x3b8; represents the angle formed between the orientation of c axis and the ND; &#x3a6; represents the angle formed between a plane including the orientation of the c axis and the ND, and a plane including the ND and the TD; (b1) XND represents the highest (0002) relative intensity of the X-ray reflection caused by crystal grains when &#x3b8; is from&#xb0; to&#xb0; and &#x3a6; is within the entire circumference; (b2) XTD represents the highest (0002) relative intensity of the X-ray reflection caused by crystal grains when &#x3b8; is from&#xb0; to&#xb0; and &#x3a6; is &#xb1;&#xb0;. (c) The &#x3b1;+&#x3b2; type titanium alloy sheet has a value for XTD/XND of at least

Alpha and beta titanium alloy sheet excellent in cold rollability and cold handling property and process for producing the same

An &#x3b1;+&#x3b2; type titanium alloy sheet to be used for a welded pipe with a rolling direction of the sheet set to a circumference direction of the pipe includes: a composition containing, in mass %, 0.8 to 1.5% of Fe, 4.8 to 5.5% of Al, 0.020% or less of N, O in a range satisfying Q=0.14 to 0.38, and a balance being composed of Ti and impurities, in which a texture in a sheet plane direction has: a first group of grains oriented in a region where of a (0002) pole figure of an &#x3b1; phase having a hexagonal crystal structure, an angle &#x3b8; being the angle between a c axis and a sheet normal direction is 0 to 30&#xb0;; and a second group of grains oriented in a region where the angle &#x3b8; is 80 to 100&#xb0; and of the (0002) pole figure of the &#x3b1; phase, an angle &#x3c6; being the angle between a projection line of the c axis onto the sheet plane and a sheet width direction is &#x2212;10 to 10&#xb0;, and a ratio of peak values of X-ray relative intensities from a basal plane in the &#x3b1; phase between the first group of grains and the second group of grains (the second group of grains/the first group of grains) is 5.0 or more.

&#x3b1; + &#x3b2; type titanium alloy sheet for welded pipe, manufacturing method thereof, and &#x3b1; + &#x3b2; type titanium alloy welded pipe product

Disclosed is a durable solid oxide fuel cell that is less likely to have a problem of a conventional solid oxide fuel cell that an air electrode containing a peroviskite oxide, when exposed to a reducing atmosphere, is separated at the stop of operation, especially shutdown. The solid oxide fuel cell includes an air electrode that is obtained by firing a compact containing a perovskite oxide and sulfur element. The content of the sulfur element in the air electrode as fresh after firing or before the start of power generation is in the range of 50 ppm to 3,000 ppm. The separation of the air electrode is effectively suppressed at the shutdown operation.

Solid oxide fuel cell

Provided is a multiplex pipe and a system for recovering steam from a geothermal well, which are capable of solving all of the various problems with a neutralization pipe prepared by painting or the like of an alkali-resistant coating on the inner face of an acid-resistant single pipe. A multiplex pipethat is configured to recover steam from a geothermal well GT, includes: a casing pipelocated outside; and a duplex pipethat is slidable relative to the casing pipein the casing pipe, and has a first gapwith an inner face of the casing pipe, the duplex pipe including an outer pipehaving acid-resistance and an inner pipehaving alkali-resistance, the outer pipeand the inner pipedefining a second gaptherebetween. An alkali solution is injected to acid hot-water stored in an acid geothermal well GT via a hollowof the inner pipeto neutralize the acid hot-water, and the neutralized hot-water V is allowed to spout to the ground via the first gap, thus recovering flashing steam.

Multiplex pipe and system for recovering steam from geothermal wells

A solid oxide fuel cell scatters MgO over a grain boundary of an LSGM which is a solid electrolyte layer. Ni components that diffuse from a fuel electrode formed on the other side of an LDC from the LSGM are trapped by the scattered MgO particles and are suppressed from diffusing towards an air electrode in the electrolyte layer.

In a fuel cell unitthat constitutes a fuel cell moduleof an SOFC device, a collector capis connected to an inner electrode layervia a seal materialas an Ag seal portion. A glass coating(dense body) is filled up between the inner electrode layerand an electrolyte layerand the collector capto cover an upper end surfaceof the seal material. As such, the fuel cell unitincludes the seal materialconstituting as an Ag seal portion that separates a fuel gas from an oxidant gas, and a glass coatingat least partially formed to over at least either the fuel gas side surface of the seal materialor an the oxidant gas side surface of the seal material

Solid oxide fuel cell device

A method of production of an &#x3b1;+&#x3b2;-type titanium alloy part for a motorcycle, car, or bicycle which has a high Young's modulus (rigidity) in the axial direction of the shaped product and a bolt, engine valve, or connecting rod made of an &#x3b1;+&#x3b2;-type titanium alloy and a method of production of the same, wherein an &#x3b1;+&#x3b2;-type titanium alloy is heated at the temperatures giving the &#x3b2;-single phase, then is uni-directionally hot rolled, the plate is machined so that a direction vertical to both the hot rolling direction and thickness direction (width direction) corresponds to the direction in which high rigidity is demanded in the finished part, that is, the axial direction of the bolt, engine valve, or connecting rod, and the X-ray diffraction intensities I(0002), I(10-10), and I(10-11), of the (0002) plane, (10-10) plane, and (10-11) plane of the titanium &#x3b1;-phase measured at the cross-sections vertical to the longitudinal axial direction of the parts satisfy I(0002)/[I(10-10)+I(10-11)]&#x2267;1.

&#x3b1;+beta-type titanium alloy part and method of production of same

Disclosed is a solid oxide fuel cell that has a high initial power generation performance and a good power generation durability. The fuel cell comprises at least a fuel electrode, an electrolyte, an air electrode, and a current collecting part disposed on the air electrode, wherein the current collecting part comprises an electroconductive metal and an oxide, the electroconductive metal is silver and palladium, the oxide is a perovskite oxide, and the content of the oxide is more than 0 (zero) and less than 0.111 in terms of weight ratio to the electroconductive metal.

Solid oxide fuel cell and fuel cell module comprising the solid oxide fuel cell

Growing community of inventors

Tokyo, Japan

Akira Kawakami