Ntn Corporation

Hiroshi Akai

Kei Hattori

Yoshinori Ito

Tomokazu Sonozaki

Hajime Asada

A sliding member () includes an iron and steel-based sintered compact containing chromium, molybdenum, and carbon and having a content of chromium, of 5 mass % or less. The sliding member () includes: a compound layer () which has a sliding surface () and is formed mainly of an iron and steel nitride; and a diffusion layer () which is adjacent to the compound layer () and has an iron and steel structure into which nitrogen and carbon diffuse. The concentrations of carbon and nitrogen in the diffusion layer () are gradually reduced with increasing depth from the sliding surface ().

Sliding member and method for producing same

A waveguide tube slot antenna () includes a waveguide tube () that is made of a resin and includes a waveguide () extending in a tube axis direction; and a plurality of radiating slots () provided in the waveguide tube (). The waveguide tube () includes first and second waveguide tube forming members (and) each having a traverse section having a shape with an end at each part in an extending direction of the waveguide (), and is configured to define the waveguide () by being coupled to each other. The waveguide tube slot antenna () includes metal cores () disposed along the tube axis direction, and the metal cores () are held by both the waveguide tube forming members (and).

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Kuwana, Japan

Hiroshi Akai