Sumitomo Chemical Company, Limited

National Institute for Materials Science

Shionogi Company Limited

Dainippon Ink and Chemicals, Incorporated

Dainippon Pharmaceutical Company, Limited

Other

Ihi Corporation

Ishikawajima-harima Heavy Industries Co., Ltd.

Kabushiki Kaisha Toshiba

Honda Motor Co., Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Hitachi Power Systems, Ltd.

Japan Synthetic Rubber Co., Ltd.

Dainippon Sumitomo Pharma Co., Ltd.

Mitsubishi Heavy Industries Limited

Hiroshi Harada

Toshiharu Kobayashi

Yutaka Koizumi

Tadaharu Yokokawa

Kyoko Kawagishi

Shiro Kato

Shintaro Komatsu

Shizuo Nakazawa

Sadahiro Inoue

Koichi Mizumoto

Satoshi Sekimura

Akihiro Sato

Yasuhiro Aoki

Mitsuo Maeda

Yusaku Kohinata

Teruo Yamamori

Naoyuki Yoshida

Isao Tabayashi

Mikiya Arai

Shoju Masaki

Katsunori Sakai

Hirokazu Matsui

Yukio Yonetani

Hiroshi Fukutomi

Yoshimi Hirokawa

Sadanobu Iwase

Yoshikazu Ro

Yuefeng Gu

Ikuo Okada

Yoshihiro Matsushita

Keizo Tsukagoshi

Junichiro Masada

Yomei Yoshioka

Masaki Taneike

Masuhisa Nakamura

Kazuyoshi Chikugo

Shintaro Saito

Hideyuki Murakami

Toshihiro Yamagata

Hitoshi Kawashima

Akihito Fujii

Toshio Osada

Masao Sakamoto

Toshiya Yoshii

Michinari Yuyama

Kazumi Iwaki

Kazuki Matsunaga

Chihiro Wakatsuki

Takehisa Hino

Yoko Yamabe

Eiichi Ohsugi

Makoto Osawa

Satoshi Okamoto

Eisaku Ito

Taiji Torigoe

Kuniaki Asai

Shunsuke Torii

Kazuo Hayatsu

Kaoru Sugita

Yoshitaka Uemura

Taketsugu Yamamoto

Toshio Tsuchida

Tomoya Hosoda

Toshiro Konoike

Yutaka Ishiwata

Tohru Nagashima

Hidetaka Oguma

Katsuhiko Iwasaki

Atsushi Terahara

Hidemichi Koyabu

Shinichi Okada

Toshiya Morie

Shinsuke Suzuki

Yoshifumi Yoshida

Osamu Odai

Zenji Nakajima

Takao Narita

Toru Kita

Sachio Shimohata

Itaru Nitta

Tetsuo Hata

Hitoshi Mizutani

Yoshiyuki Fukuhara

Yoko Kan

Hiroshi Yamazaki

Ryoji Kakiuchi

Takanori Nakamura

Osamu Ohashi

Teruaki Kuriyama

Yusuke Kikuchi

Kunihisa Satoh

Yukiko Morikage

Kazuo Morikage

Masato Nakanishi

Ryota Okimoto

Toshihiro Shinosaki

Daisuke Nagahama

Akira Tamura

Hiromichi Arakawa

Kazuhiro Kaneko

A method for recycling a Ni-based single crystal superalloy part or unidirectionally solidified superalloy part provided with a thermal barrier coating containing at least a ceramic on a surface of a Ni-based single crystal superalloy substrate or Ni-based unidirectionally solidified superalloy substrate, in which the method including the steps of: melting and desulfurizing a Ni-based single crystal superalloy part or Ni-based unidirectionally solidified superalloy part at a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy and less than the melting point of the ceramic; heating a casting mold for a recycled Ni-based single crystal superalloy part or casting mold for a recycled Ni-based unidirectionally solidified superalloy part to a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy; pouring the desulfurized melted Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy into the casting mold, and producing a melting stock or growing a Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy; and removing the melting stock or the recycled Ni-based single crystal superalloy part or recycled Ni-based unidirectionally solidified superalloy part from the casting mold. In this way, a method for recycling a Ni-based superalloy part, by which the recycle cost of a Ni-based superalloy part and the lifetime cost of a highly efficient gas turbine engine using a Ni-based superalloy part can be significantly reduced, and further a Ni-based superalloy part having the same high-temperature strength and oxidation resistance as those of a newly produced Ni-based superalloy part can be obtained, is provided.

Ni-based superalloy part recycling method

Disclosed herein is a nickel-based heat-resistant superalloy produced by a casting and forging method, the nickel-based heat-resistant superalloy comprising 2.0 mass % or more but 25 mass % or less of chromium, 0.2 mass % or more but 7.0 mass % or less of aluminum, 19.5 mass % or more but 55.0 mass % or less of cobalt, [0.17&#xd7;(mass % of cobalt content&#x2212;23)+3] mass % or more but [0.17&#xd7;(mass % of cobalt content&#x2212;20)+7] mass % or less and 5.1 mass % or more of titanium, and the balance being nickel and inevitable impurities, and being subjected to solution heat treatment at 93% or more but less than 100% of a &#x3b3;' solvus temperature.

Nickel-based heat-resistant superalloy

Provided is a Ni-based single crystal superalloy containing

Ni-based single crystal superalloy

A liquid crystal polyester composition contains: a liquid crystal polyester in an amount of 100 parts by mass as well as a fibrous filler and a plate-like filler in an amount of not less than 65 parts by mass and not more than 100 parts by mass in total. The fibrous filler in the composition has a number average fiber diameter of not less than 5 &#x3bc;m and not more than 15 &#x3bc;m and a number average fiber length of more than 200 &#x3bc;m and less than 400 &#x3bc;m. The mass ratio of the fibrous filler to the plate-like filler in the composition is not less than 3 and not more than 15. The flow starting temperature of the composition is not lower than 250&#xb0; C. and lower than 314&#xb0; C.

Liquid crystal polyester composition, method for producing liquid crystal polyester composition, and molded article

According to the present invention, an aromatic polysulfone resin is offered which is suitable as film material, especially in porous membranes. The aromatic polysulfone resin of the present invention has a reduced viscosity of 0.55-0.65 dL/g, and preferably 0.58-0.62 dL/g, number average molecular weight (Mn) of 22000 or more, and preferably 23500 or more, and a value of the ratio of weight average molecular weight (Mw) relative to number average molecular weight (Mn) of 2.54 or less, and preferably 2.50 or less.

Aromatic polysulfone resin and membranes thereof

A method for producing a liquid-crystalline polymer composition containing a liquid-crystalline polymer and a magnetic filler formed by heat-treating a composite material of a ceramic powder and a soft magnetic metal powder in an inert gas atmosphere.

Method of producing a liquid-crystalline polymer composition and molded article thereof

The present invention provides a method for producing a liquid-crystalline polyester resin composition, the method comprising providing a twin-screw extrusion granulator that comprises a cylinder provided with at least one supply port and two screws installed in the cylinder; supplying (A) a liquid-crystalline polyester and (B) a titanium oxide filler into the cylinder through one of the at least one supply port; and melt-kneading the components (A) and (B), wherein a cylinder setting temperature is set at a temperature of (Tm&#x2212;10)&#xb0; C. or lower wherein Tm is a fluidization temperature of the component (A).

Method for producing liquid-crystalline polyester resin composition

The present invention is related to a method for producing a resin composition including feeding a resin (A), a fibrous filler (B), and a particulate filler (C) which is harder than the fibrous filler (B) to an extruder, and melt-kneading to extrude a kneaded material, the resin composition comprising a fibrous filler (B) which is 140 &#x3bc;m or less in weight average fiber length. According to the present invention, a production method with high versatility is provided in which a resin composition containing the fibrous filler having the weight average fiber length of 140 &#x3bc;m or less is effectively produced.

Method for producing resin composition

A Ni-based superalloy component includes a bond coat layer having a chemical composition not allowing interdiffusion to occur on a Ni-base superalloy substrate, and by allowing the bond coat layer to have Pt and/or Ir content equal to or higher than 0.2% but not exceeding 15% by mass, generation of an SRZ, which occurs at an interface between the Ni-base superalloy substrate and the bond coat layer in a high-temperature oxidizing atmosphere, can be suppressed, and at the same time adhesion at the interface between a ceramic thermal barrier coat layer and the bond coat layer is improved. Thus, a long-life Ni-based superalloy component with suppressed elemental interdiffusion between the Ni-base superalloy substrate and the bond coat layer even at temperatures exceeding 1100&#xb0; C. is provided.

Heat-resistant component

A method for producing a resin composition using an extruder, the extruder having a cylinder and a screw disposed inside the cylinder, the cylinder being provided with a main feed port and further optionally provided with a side feed port disposed downstream in an extrusion direction from the main feed port, and the method comprising: supplying a resin (A) in the total amount to the extruder from the main feed port; supplying a fibrous filler (B), whose a weight average fiber length is 1 mm or more, in the total amount to the extruder from the main feed port, or, with the extruder being provided with the side feed port, supplying the fibrous filler (B) partly to the extruder from the main feed port and the remainder to the extruder from the side feed port; melt-kneading the supplied resin (A) and the fibrous filler (B); and extruding the melt-kneaded material.

A method is provided for producing a resin composition in which the fiber length of the fibrous filler contained in the resin composition is controlled. The method includes a step of feeding a resin (A) and a fibrous filler (B) to an extruder, melt-kneading and then extruding them. The extruder includes a cylinder, a screw mounted in the cylinder, a main feed port provided in the cylinder, and a side feed port provided rearwards from the main feed port in the extrusion direction. Part of the resin (A) and part of a fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the main feed port and the rest of the resin (A) and the rest of the fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the side feed port.

The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition comprising 5.0-7.0 wt % of Al, 4.0-10.0 wt % of Ta, 1.1-4.5 wt % of Mo, 4.0-10.0 wt % of W, 3.1-8.0 wt % of Re, 0-0.50 wt % of Hf, 2.0-5.0 wt % of Cr, 0-9.9 wt % of Co and 4.1-14.0 wt % of Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities. Furthermore, in this Ni-based single crystal super alloy, when lattice constant of matrix is taken to be a1 and lattice constant of precipitation phase is taken to be a2, a2&#x2266;0.999a1.

Ni-based single crystal super alloy

There is provided a nickel alloy having an excellent creep strength as well as high-temperature oxidation resistance. The nickel alloy of the present invention comprises, by mass percent, Cr in a range of 11.5 to 11.9%, Co in a range of 25 to 29%, Mo in a range of 3.4 to 3.7%, W in a range of 1.9 to 2.1%, Ti in a range of 3.9 to 4.4%, Al in a range of 2.9 to 3.2%, C in a range of 0.02 to 0.03%, B in a range of 0.01 to 0.03%, Zr in a range of 0.04 to 0.06%, Ta in a range of 2.1 to 2.2%, Hf in a range of 0.3 to 0.4%, and Nb in a range of 0.5 to 0.8%, the balance being Ni and unavoidable impurities, and contains carbides and borides precipitating in crystal grains and at grain boundaries.

Nickel alloy

A nickel-base superalloy having excellent oxidation resistance is provided. It is useful as high-temperature members such as turbine blades and turbine vanes for jet engines or gas turbines. The nickel-base superalloy has a composition containing Co: 0.1 to 15% by weight, Cr: 0.1 to 10% by weight, Mo: 0.1 to 4.5% by weight, W: 0.1 to 15% by weight, Al: 2 to 8% by weight, Ta+Nb+Ti: 0 to 16% by weight, Hf: 0 to 5% by weight, Re: 0.1 to 16% by weight, Ru: 0.1 to 16% by weight, Si: 0.2 to 5% by weight and a balance made of Ni and unavoidable impurities.

Nickel-base superalloy excellent in the oxidation resistance

The Ni-based single crystal alloy disclosed here is a single crystal and has a chemical composition containing, as % by mass,

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Tsukuba, Japan

Hiroshi Harada