Hitachi, Ltd.

Katsuhito Takahashi

Hiroshi Nakano

Haruo Akahoshi

Motoo Aoyama

Shinya Imano

Takuya Aoyagi

Junichi Sakano

Motomune Kodama

Takashi Naitou

Masao Chaki

Kenya Ohashi

Seunghwan Park

Masaru Sekihara

Kazumi Fujii

Kazuaki Kito

Ryo Ishibashi

Mamoru Kamoshida

Tsuneyuki Hashimoto

Ryou Ishibashi

Tetsushi Hino

Motoki Nakane

Provided is a structure including a first member (); a second member () disposed opposite to the first member (); and a glass layer () disposed between the first member () and the second member () so as to bond the first member () and the second member (). A glass transition point of the glass layer () is lower than a temperature of the glass layer () under operation. In the glass layer (), at least either of ceramic and metallic particlesis dispersed. In a temperature region lower than the glass transition point of the glass layer (), a thermal expansion coefficient thereof falls in between thermal expansion coefficients of the first member () and the second member (). This allows thermal strain caused within the structure () to be reduced when the structure () is operated at a higher temperature than a room temperature.

Structure, electronic element module, heat exchanger, fuel rod, and fuel assembly

Provided are an atmospheric corrosion test procedure and an apparatus used for the test. The procedure involves a salt spray step for supplying salt content containing chloride ions on the surfaces of test pieces placed in a thermo-humidistat chamber and a subsequent dry-wet cyclic step including a dry sub-step for drying the surface of the test pieces in the thermo-humidistat chamber at a low relative humidity and a subsequent wet sub-step at a higher relative humidity than that in the dry sub-step, which are cycled. The salt content is supplied by spraying the salt water in the salt spray step. An exhaust step for removing the salt mist sprayed inside thermo-humidistat chamber is further inserted between the salt deposition step and the dry sub-step. The quantity of the salt content deposited on the surfaces of the test pieces is controlled by adjusting the quantity of the sprayed salt water.

Atmospheric corrosion test procedure and its apparatus

Provided is high corrosion resistant equipment for a plant having the lining structure which exhibits high reliability against breaking of a joining portion over a long use period. The high corrosion resistant equipment for a plant includes a lining plate and a support portion which are made of a high corrosion resistance material and a structural material portion made of a steel material or the like. The lining plate and the support portion include a joining portion to which friction stirring is applied. The support portion is assembled into or fastened to the structural material portion by means of the geometrical structure with a gap interposed between the support portion and the structural material portion. Due to such a constitution, high corrosion resistant equipment for a plant having the lining which exhibits high reliability can be acquired.

High corrosion resistant equipment for a plant

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Hitachi, Japan

Katsuhito Takahashi