Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Shunsuke Taniguchi

Naoki Maruyama

Jun Maki

Hiroshi Shuto

Eisaku Sakurada

Koutarou Hayashi

Akira Taniyama

Takafumi Amino

Yoshitaka Nishiyama

Hideya Kaminaka

Mitsuru Yoshida

Tatsuo Nagata

Junko Imamura

Yasuhiro Masaki

Takashige Mori

Chie Yokoyama

Provided is a negative electrode active material which is excellent in capacity, capacity retention ratio, and a coulombic efficiency when charging/discharging is repeated. The chemical composition of the alloy particles of the negative electrode active material of the present disclosure includes 0.50 to 3.00 mass % of oxygen, and alloy elements containing Sn: 13.0 to 40.0 at % and Si: 6.0 to 40.0 at %, with the balance being Cu and impurities. The structure of the alloy particles includes: one or more types selected from the group consisting of a phase having a D0structure, and a δ phase; one or more types selected from the group consisting of an ε phase and an η' phase; and a SiOphase (x=0.50 to 1.70). The SiOphase (x=0.50 to 1.70) has a volume fraction of 5.0 to 60.0% and the η′ phase has a volume fraction of 0 to 60.0%.

Negative electrode active material, negative electrode, and battery

There is provided a tilting parameters calculating device for use in a charged particle beam device for making a charged particle beam irradiated to a surface of a sample mounted on a sample stage, the tilting parameters calculating device being configured to calculate tilting parameters, the tilting parameters being input parameters to control a tilting direction and a tilting value of the sample and/or the charged particle beam, the input parameters being necessary to change an incident direction of the charged particle beam with respect to the sample, the tilting parameters calculating device including a tilting parameters calculating unit for calculating the tilting parameters based on information that indicates the incident direction of the charged particle beam with respect to a crystal lying at a selected position on the surface in a state where the incident direction of the charged particle beam with respect to the sample is in a predetermined incident direction, the information being designated on a crystal orientation figure, which is a diagram illustrating the incident direction of the charged particle beam with respect to a crystal coordinate system of the crystal.

Tilting parameters calculating device, sample stage, charged particle beam device, and program

A titanium product for a separator of a proton exchange membrane fuel cell according to the present invention includes: a base material that consists of commercially pure titanium; a first oxide layer that is formed in a surface layer of the titanium product, consists of TiOof a rutile crystallinity, and has a thickness of 0.1 to 1.5 nm; and a second oxide layer that is formed between the base material and the first oxide layer, consists of TiO(1&#x3c;x&#x3c;2), and has a thickness of 3 to 20 nm. This titanium product is suitable to be used as a separator of a proton exchange membrane fuel cell that has a high corrosion resistance in an environment in a fuel cell, is capable of keeping a low contact resistance with an electrode consisting of carbon fiber and the like, and is inexpensive.

Titanium product, separator, and proton exchange membrane fuel cell, and method for producing titanium product

Provided is a steel sheet for soft-nitriding treatment which has a chemical composition consisting of, in mass %, C: more than or equal to 0.02% and less than 0.07%, Si: less than or equal to 0.10%, Mn: 1.1 to 1.8%, P: less than or equal to 0.05%, S: less than or equal to 0.01%, Al: 0.10 to 0.45%, N: less than or equal to 0.01%, Ti: 0.01 to 0.10%, Nb: 0 to 0.1%, Mo: 0 to 0.1%, V: 0 to 0.1%, Cr: 0 to 0.2%, and the balance: Fe and impurities, satisfies [Mn+Al&#x2265;1.5], and has a total content of Ti, Nb, Mo, V, and Cr present as precipitates in the steel sheet of less than 0.03% in mass %. The steel sheet for soft-nitriding treatment has a metal structure in which a ferrite area ratio is more than or equal to 80%, and a ferrite dislocation density at a position of 50 &#x3bc;m from a surface of the steel sheet is 1&#xd7;10to 1&#xd7;10m.

Steel sheet for soft-nitriding treatment, method of manufacturing same, and soft-nitrided steel

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Tokyo, Japan

Shunsuke Taniguchi