Kabushiki Kaisha Toshiba

Masamitsu Sakuma

Akira Tanaka

Tetsushi Okamoto

Takashi Harakawa

Mikio Kakiuchi

Hiroshi Hatano

Yoshiyuki Inoue

Naoki Shibukawa

Kenichi Yamazaki

Ken Nagakura

Fumio Sawa

Masashi Kobayashi

Makoto Kawahara

Tooru Ootaka

Hiroaki Cho

Tadayuki Hashidate

Wataru Nakamura

Yoshihiro Hyodo

Toshihiko Shinoda

An erosion resistant material has a continuous portion and discontinuous portions. The continuous portion has a continuous structure. The discontinuous portions are arranged inside the continuous portion to have a discontinuous structure. The discontinuous portions are formed of particles having an average particle diameter of 1 &#x3bc;m or less. Further, the discontinuous portions are formed of a material having a surface hardness and a Young's modulus higher than those of the continuous portion.

Erosion resistant material and turbine blade

According to one embodiment, there is provided a rotating electrical machine including a core, a coil extending from the core, and an electromagnetic shield which is provided outside the core, and has a plurality of shoulders projecting toward the coil. The coil includes an insulator covering outside of a conductor, a resistance layer formed on a surface of the insulator and contacting the core, and at least one potential grading layer formed on a surface of the insulator adjacent to the resistance layer. A boundary between the resistance layer and potential grading layer is provided at a position farther from the core than a point on a surface of the coil, where a distance between the coil and a shoulder of the electromagnetic shield closest to the core is the shortest.

Rotating electrical machine and coil

Growing community of inventors

Yokohama, Japan

Masamitsu Sakuma