Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Naotoshi Okaya

Taiji Torigoe

Masahiko Mega

Yoshifumi Okajima

Masamitsu Kuwabara

Shuji Tanigawa

Yoshitaka Uemura

Hiroyuki Kimura

Eisaku Ito

Ikuo Okada

Soichiro Tabata

Junichiro Masada

Keizo Tsukagoshi

Ichiro Nagano

Naoto Tochitani

Takayuki Kurimura

Yasuhiko Tsuru

Shigenari Horie

Daisuke Kudo

Yuki Enomoto

Shunji Imai

Yuta Okimori

Haruhiko Asaka

Shusuke Sakuma

A method of forming a sprayed coating includes preparing a spray target member having a surface on which openings of first ends of holes are formed, preparing a plurality of masking pins each of which comprises metal, and inserting each of the masking pins into a corresponding one of the holes so that each of the masking pins partially protrudes from the surface. The method also includes applying an adhesive agent for fixing the masking pins to the respective holes, to at least one of the holes or the masking pins, forming a ceramic layer by spraying on the surface of the spraying target member, the ceramic layer comprising a ceramic material, while the masking pins are fixed to the respective holes via the adhesive agent, and removing the masking pins from the holes after the spraying step.

Method of forming sprayed coating, high-temperature component for turbine, turbine, masking pin for forming sprayed coating, and masking member

A steam turbine rotor blade for forming a turbine rotor cascade of a steam turbine includes a rotor blade main body having a blade portion, a blade base portion and a first coupling portion, which has first facing surfaces, provided on opposite end sides of the blade portion, and a second coupling portion provided in an intermediate portion of the blade portion and having second facing surfaces. The steam turbine rotor blade also includes a coating layer which is made of a Co-based alloy having a single composition on a surface of at least one of the first and second facing surfaces with a diffusion layer having a thickness of 10 &#x3bc;m or less provided between the coating layer and the surface.

Steam turbine rotor blade, method for manufacturing steam turbine rotor blade, and steam turbine

A method for producing a thermal spray powder includes: a preparing step of preparing a powder mixture containing a first particle made from zirconia-based ceramic containing a first additive agent and a second particle made from zirconia-based ceramic containing a second additive agent, the powder mixture having a 10% cumulative particle diameter of more than 0 &#x3bc;m and not more than 10 &#x3bc;m; and a secondary-particle producing step of producing a plurality of secondary particles each of which includes the first particle and the second particle sintered with each other.

Method of producing thermal spray powder, manufacture apparatus of thermal spray powder, and thermal spray powder produced by the producing method

An erosion test apparatus includes a combustor configured to obtain a combustion gas by mixing and combusting compressed air and a fuel, and an erodent supply unit configured to supply an erodent to the combustion gas. The erosion test apparatus further includes an accommodation support unit configured to accommodate and support a test piece having a front surface coated through thermal barrier coating, and an accelerator configured to accelerate the combustion gas including the erodent to collide with the test piece.

Erosion test apparatus, accelerator and erosion test method

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Yokohama, Japan

Naotoshi Okaya