A.l.m.t. Corporation

Other

Shigekazu Yamazaki

Akihiko Ikegaya

Ayuri Tsuji

Masahiro Katoh

Hidenobu Nishino

Takanori Kadokura

Noboru Uenishi

Seiji Nakabayashi

Masahiro Kato

Seiji Oda

Kazunori Matsumoto

Shigeki Kawabata

Toru Nakajima

Tomohisa Yamamoto

The present heat-resistant tungsten alloy has a first phase containing W as a major component, a second phase having a carbonitride of at least one element of Ti, Zr and Hf and containing the carbonitride as a major component when W is removed, and a third phase having a carbide of at least one element of group 5A elements in the periodic table and containing the carbide as a major component when W is removed, the heat-resistant tungsten alloy having a Vickers hardness of 550 Hv or more at a room temperature, a displacement of 1 mm or more when leading to fracture, as determined in a three point bending test at 1200&#xb0; C., and a 0.2% proof stress of 900 MPa or more, as determined in the three point bending test at 1200&#xb0; C.

Heat-resistant tungsten alloy, friction stir welding tool, and production method

A heat-resistant molybdenum alloy of this invention comprises a first phase containing Mo as a main component and a second phase comprising a Mo&#x2014;Si&#x2014;B-based intermetallic compound particle phase, wherein the balance is an inevitable impurity and wherein the Si content is 0.05 mass % or more and 0.80 mass % or less and the B content is 0.04 mass % or more and 0.60 mass % or less.

Heat-resistant molybdenum alloy

A heat-resistant member comprising a molybdenum alloy that comprises a first phase containing Mo as a main component and a second phase comprising a Mo&#x2014;Si&#x2014;B-based intermetallic compound particle phase, wherein the balance is an inevitable impurity and wherein the Si content is 0.05 mass % or more and 0.80 mass % or less and the B content is 0.04 mass % or more and 0.60 mass % or less. The member may be coated.

A heat-resistant alloy that satisfies physical properties such as proof stress and hardness adapted to an increase in the melting point of a welding object compared to conventional alloys is provided. The heat resistant alloy includes a first phase, as a main component, containing a Mo or W metal phase, a second phase containing a Mo&#x2014;Si&#x2014;B&#x2014;based alloy, and a third phase containing titanium carbonitride, wherein the balance is inevitable compounds and inevitable impurities.

Heat-resistant alloy and method of manufacturing the same

A Mo&#x2014;Si&#x2014;B-based alloy for a heat-resistant alloy that satisfies, more than conventional, physical properties such as proof stress and hardness adapted to an increase in the melting point of 5 a welding object. The Mo&#x2014;Si&#x2014;B-based alloy powder is such that the full width at half maximum of (600) of Mo5SiB2 in X-ray diffraction peak data is 0.08 degrees or more and 0.7 degrees or less.

Mo&#x2014;Si&#x2014;B-based alloy powder, metal-material raw material powder, and method of manufacturing a Mo&#x2014;Si&#x2014;B-based alloy powder

An energy-saving, high-outputting and high-efficiency, electric discharge type of illumination apparatus and associated units having thin divisional electrode pieces arranged at relatively narrow intervals on an electrode-application area, which is defined on the bottom of a flat container. The divisional electrode pieces are fixed to the electrode-application area with an intervening sheet of good electrically insulating and thermally conductive material laid therebetween. A front glass having a fluorescence coating on its inside is placed to confront the electrode-application area. Cooling water is circulated in the electrode-application area for cooling the divisional electrode pieces. A multi-poled magnet sheet arranged outside the electrode-application area is aligned with the electrode-to-electrode space. Lower frequency power supplies are connected to the divisional electrodes to supply that with voltages of the same amplitude. The power supplies are connected in the form of a star and are connected to a controller for controlling the frequency, amplitude and phase of the voltage wave. The power supply uses an insulation transformer to float the voltages appearing at the output terminals. Thus, an electric discharge appears exclusively among divisional electrodes.

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Toyama, Japan

Shigekazu Yamazaki