Ihi Corporation

National Institute for Materials Science

Ishikawajima-harima Heavy Industries Co., Ltd.

Nucor Corporation

Hiroki Yoshizawa

Shuji Ikeda

Hiroo Takahashi

Mitsutoshi Watanabe

Yukihiro Shimoda

Hiroyuki Ochiai

Hiroyuki Otsuka

Takashi Furukawa

Akihiro Sato

Katsumi Nakayama

Issei Otera

Masayoshi Shiino

Hisahiko Fukase

Haruki Eguchi

Akira Tateno

Shiro Osada

Isao Imai

Takayuki Iwasaki

Ujihiro Nishiike

Kenta Kawahara

Kazuo Miyoshi

Hideyuki Murakami

Chitoshi Mochizuki

Natsuki Yoneyama

Hidemi Ukai

Masanobu Hasegawa

Keiji Kubushiro

Kota Sasaki

Shigeyuki Satoh

Isao Nakanowatari

Toshinori Ota

Kouiti Fujita

Tsuyoshi Tosho

Nobuyasu Tsuno

Nobuhiko Yunoki

Satoshi Kurita

Yoshihiro Tsuda

Masato Ishida

Yoshito Yasui

Sadao Doi

Hiromichi Murakami

Kyouhei Nomura

Hiroaki Iwata

Tetsuji Hirato

Osamu Harasaki

Akihiro Nomura

Takashi Yoshinouchi

Masayuki Satake

Watanabe Mitsutoshi

Masayoshi Shino

Hiroyuki Ochaiai

A sliding component having a wear-resistant coating includes a sliding component formed of a Ni alloy, and a wear-resistant coating provided on a sliding surface of the sliding component. The wear-resistant coating has, at least on the surface side thereof, an Al-containing Co alloy layer which contains Co as a main component, at least one of W, Ni, Mo, Fe, Si, and C, Cr, and 0.3% by mass or more and 26% by mass or less of Al.

Sliding component having wear-resistant coating

A slidable component including a wear-resistant coating includes a slidable component, and a wear-resistant coating provided on a slide surface of the slidable component. The wear-resistant coating includes metal particles deposited on the side surface of the slidable component, and containing Ni, Co and Cr, and a first oxide layer covering surfaces of the metal particles, containing an Al oxide as its main component, and containing a Y oxide.

Slidable component including wear-resistant coating and method of forming wear-resistant coating

A sliding part with a wear resistant coating includes a sliding part, and a wear resistant coating provided on a sliding surface of the sliding part, and made of a cobalt alloy containing chromium and silicon. In the wear resistant coating, oxide particles are dispersed which include an oxide containing chromium and silicon, and have a particle size of 100 &#x3bc;m or less when a cross section of the wear resistant coating is observed using an optical microscope with a magnification of 100 times.

Sliding part with wear resistant coating and method of forming wear resistant coating

A thermal barrier-coated Ni alloy component includes: a substrate made of a Ni alloy containing Al; an intermediate layer formed on a surface of the substrate; and a thermal barrier layer made of a ceramic and formed on a surface of the intermediate layer. The intermediate layer includes a &#x3b3;' layer, which is formed from a &#x3b3;&#x2032;-NiAl phase on the surface on the thermal barrier layer side, and contains Pt.

Thermal barrier-coated Ni alloy component and manufacturing method thereof

Employing a compact molded from powder of metal or the like as an electrode, generating pulsed discharges between the electrodeand a treating portion Wa of work W in working oil L as a mixture with powder of semiconductor or conductor mixed therein, using discharge energy thereof for locally fusing surface regions of the treating portion Wa of work W, showering molten pieces of electrode material or reactants of the electrode material onto the treating portion Wa of work W, forming a covering film C on the treating portion Wa of work W.

Discharge surface treatment method and coating block for discharge surface treatments

A discharge surface treatment electrode used in discharge surface treatment for forming a wear-resistant film on a treatment target surface of a workpiece by use of the discharge energy of electric discharges caused between the electrode and the workpiece, the film being made of a material of an electrode or a substance obtained by a reaction of the material of the electrode with the discharge energy. The discharge surface treatment electrode is formed by: compression-molding a mixed powder into a green compact, the mixed powder being formed from a powder of a Stellite alloy with an average particle size of 3 &#x3bc;m or less prepared by use of a jet mill and a powder of a metal with an average particle size of 3 &#x3bc;m or less manufactured through an atomization process or a chemical process; and subjecting the green compact to heat treatment.

Discharge surface treatment electrode and method of manufacturing the same

The method of forming an oxidation resistant coating layer is for forming an oxidation resistant coating layer containing aluminum on a surface layer of a member (A) formed of metallic material. The method includes a plating treatment step (S) of plating aluminum on a surface of the member (A) in a solvent, and a heat treatment step (S) of heat-treating the member (A) whose surface has been plated by the plating treatment step (S).

Method for forming oxidation resistant coating layer

A formingdie is filled with a powder () of electrode material, the powder () of electrode material filled in the forming die is compressed to form a porous powder compact (), the porous powder compact () is set in place in a chamber () of a heat-treating furnace (), the chamber () is supplied with inert gas or hydrogen gas, and inert gas or hydrogen gas is heated by heaters () in the heat-treating furnace () and blown toward the powder compact (), as blows circulating in the chamber (), whereby the powder compact is heated with heat of convection flows of inert gas or hydrogen gas, or mixed gas containing inert gas as principal component and hydrogen gas, so the electrode material of the powder compact is sintered.

Fabrication method of electrode for spark surface modification, and spark surface modification electrode

A cutting instrument has a cutting blade portion formed with a skin made of an electrode material or a reaction product of the electrode material, the electrode material having been molten by pulse discharges induced between the cutting blade portion and an electrode in a machining liquid or gas, having as the electrode one of a mold molded from powder of a kind or powder of a mixture of kinds out of a metal or metals, a metal compound or metal compounds, and a ceramic or ceramics, and a heat-treated mold being the mold as heat-treated.

Cutting instrument

A metal mixture is prepared, in which an excess amount of Te is added to a (Bi&#x2014;Sb)Tebased composition. After melting the metal mixture, the molten metal is solidified on a surface of a cooling roll of which the circumferential velocity is no higher than 5 m/sec, so as to have a thickness of no less than 30 &#x3bc;m. Thus, a plate shaped raw thermoelectric semiconductor materialsare manufactured, in which Te rich phases are microscopically dispersed in complex compound semiconductor phases, and extending directions of C face of most of crystal grains are uniformly oriented. The raw thermoelectric semiconductor materialsare layered in the direction of the plate thickness. And the layered body is solidified and formed to form a compact. After that, the compactis plastically deformed in such a manner that a shear force is applied in a uniaxial direction that is approximately parallel to the main layering direction of the raw thermoelectric semiconductor materials. As a result, a thermoelectric semiconductorhaving crystal orientation in which extending direction of C face and the direction of c-axis of the hexagonal structure are approximately aligned. As a result, the crystalline orientation is improved, and the thermoelectric Figure-of-Merit is increased.

Thermoelectric semiconductor material, thermoelectric semiconductor element using thermoelectric semiconductor material, thermoelectric module using thermoelectric semiconductor element and manufacturing method for same

A metal strip casting apparatus and method of casting metal strip include assembling a pair of counter-rotatable casting rolls positioned laterally forming a nip between for casting, and assembling a pair of brush rolls, each of the brush rolls associated with one of each of the casting rolls. Each brush roll includes at least one spaced apart brush line extending substantially along the axial length of the casting roll. The brush lines may form a spiral, zigzag, wave or crisscross array about the brush roll. The brush roll may include one or more staggered rings with regularly or irregularly spaced apart bristles which form the brush lines. The brush lines may be between 10 to 50 mm apart and separated by between 2 mm to 45 mm of open space. The brush lines may be one line per 10 mm to 90 mm of axial length of brush roll.

Brush roll for casting roll

An operation to acquire a strip with less thickness even if arcuate worn steps are formed on side weirs is disclosed. During an operation of a twin-roll casting machine with arcuate worn steps developing on side weirs due to rotational sliding contact of chilled rolls, the thickness of a steel strip from a nip is reduced, and the center-to-center distance between the rolls is increased with the side weirs in contact with ends of the rolls being displaced upward. This prevents interference of outer peripheries of the rolls with boundary surfaces adjacent to the arcuate worn steps of the side weirs.

Operating method for twin-roll casting machine, and side weir supporting device

A twin roll caster including chilled rolls, side weirs, and a molten-metal delivery nozzle. Baffles, contiguous with bottoms of end faces of the nozzle, project in a casting pool toward the side weirs to suppress stream of the molten metal into a nip between the rolls. Thus, hot molten metal just after poured into the pool does not instantly reach the nip along the side weirs, and molten metal decreases in temperature with lapse of time after the pouring streams into the nip as the rolls are rotated. As a result, belated formation of solidified shells at and adjacent to outer circumferential edges of the chilled rolls is eliminated. Thus, a strip delivered from the nip between the rolls has no reduced thickness at regions adjacent to lateral edges of the strip and has uniform thickness throughout the width of the strip.

Twin roll caster

A protective coating for protecting a component of a gas turbine engine or such from wear is provided with a base coating consisting essentially of metal and including a pore, and a spherical particle filling the pore, at least a surface of which consists essentially of a ceramic.

Protective coating and metal structure

In order to provide a brazing sheet having excellent workability, a powder of a brazing filler metal composition is obtained from a single type of powder or by mixing two or more powders to form the brazing filler metal composition. By powder roll compaction of the powder, the powder is formed into a sheet shape.

Brazing filter metal sheet and method for production thereof

Growing community of inventors

Tokyo, Japan

Hiroki Yoshizawa