Jfe Steel Corporation

Suzuki Motor Corporation

Yamatake-honeywell Co., Ltd.

Kobe Steel, Ltd.

Tokyo Institute of Technology

Sachiko Suzuki

Satoru Ando

Yoshiharu Sugimoto

Nobuaki Honda

Nobutoshi Konagai

Yoshiro Sakai

Masanobu Matsuguchi

Ruri Nakada

Yuya Ito

Hiroyuki Hara

Kouta Sako

Hiroshi Matsuda

Masahiro Yoshida

Rinsei Ikeda

Hiroki Nakamaru

Reiichi Suzuki

Tatsuo Sato

Masao Takeyama

Minoru Miyata

Sakae Fujita

Toshio Maruyama

Tooru Tsuru

A gas-shielded arc welding method includes welding a steel plate having a tensile strength of 780 MPa or more while feeding a consumable electrode via a welding torch and flowing a shielding gas. The consumable electrode includes, in mass %, C: 0 to 0.20%, Si: 0 to 0.50%, Mn: 0 to 0.50%, Cr: 1.00% to 9.00%, S: 0.0020% to 0.0600%, and Ni: 0 to 0.50%. The shielding gas includes, in vol. %, at least one of COand O: 1% to 15% in total, with the remainder being Ar and unavoidable impurities. Welding is performed under the condition satisfying the relationship of 1≤{−0.05×[CO+O]}+[Cr]≤8.3, and [Cr] represents the content of Cr in the consumable electrode, and [CO+O] represents a total content of at least one of COand Oin the shielding gas.

Gas-shielded arc welding method and method for manufacturing welded structure

A mobile body corrosion measuring apparatus having a corrosion sensor installed in at least one portion of a mobile body, the corrosion sensor measuring a corrosion state at the portion and outputting corrosion data; a vehicle (mobile body) running speed sensor installed in the mobile body, the running speed sensor measuring a running speed of the mobile body and outputting the running speed data; and a data collection unit that acquires the corrosion data from the corrosion sensor and the running speed data from the vehicle speed sensor at the same time and collects the corrosion data and the running speed data with the corrosion data and the running speed data associated with each other. Due to above structure, a corrosion state specific to the mobile body can be accurately measured.

Method and apparatus for measuring corrosion of mobile body

An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, wherein the coating layer has pseudoternary eutectic microstructures of &#x3b1;Al&#x2014;MgSi&#x2014;(Al&#x2014;Fe&#x2014;Si&#x2014;Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.

Aluminum or aluminum alloy-coated steel material and method of manufacturing the same

A hydrophilic polymer material such as polyvinyl alcohol is formed into a porous film ( ). A film (holding film) ( ) made from a hydrophobic polymer material such as polyvinyl acetate is formed on the inner walls of a large number of pores ( ) formed in the porous film ( ). Lithium chloride ( ) is held in these pores ( ).

Moisture sensitive element and method of manufacturing the same

A moisture sensitive element in which a functional film is formed in contact with opposing electrodes arranged on a substrate. The element includes a mechanism for measuring the temperature of the functional film. The functional film has a porous structure made from a polymer material with hydrophilic properties and includes fine pores. A holding film is formed on inner walls of the pores and made from another polymer material having hydrophobic properties. An electrolytic salt is held within the pores.

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Tokyo, Japan

Sachiko Suzuki