Other

The Furukawa Electric Co., Ltd.

Tohoku University

Tohoku Techno Arch Co., Ltd.

Tokai University Educational System

Satoshi Awaji

Masahiro Sugimoto

Hirokazu Tsubouchi

Kazuo Watanabe

Naoyuki Kitamura

Hideki Ii

Mitsuhiro Motokawa

Daisuke Asami

Hidetoshi Oguro

Iwao Mogi

Masaki Makihara

A compound superconducting twisted wire includes compound superconducting strands being twisted to form a twisted structure, in which each of the compound superconducting strands includes a compound superconductor part, a reinforcing part and a stabilizing part. The compound superconductor part includes compound superconducting filaments and a first matrix, the compound superconducting filaments each including a compound superconducting phase. The reinforcing part is disposed on an outer circumferential side of the compound superconductor part and includes reinforcing filaments and a second matrix. The stabilizing part is disposed on at least one side of an inner circumferential side and an outer circumferential side of the reinforcing part. A volume ratio of the reinforcing part relative to the compound superconducting strand is larger than a volume ratio of the compound superconductor part relative to the compound superconducting strand.

Compound superconducting twisted wire and rewinding method for compound superconducting twisted wire

A compound superconducting wireincludes a reinforcement portionand a compound superconductor. In the reinforcement portion, an assembly of plural reinforcement elementsare disposed. The reinforcement elementseach include plural reinforcement filamentsdisposed in a stabilizer, and a stabilizing layerat the outer periphery thereof. The reinforcement filamentseach mainly contain one or more metals selected from the group consisting of Nb, Ta, V, W, Mo, Fe, and Hf, an alloy consisting of two or more metals selected from the aforementioned group, or an alloy consisting of copper and one or more metals selected from the aforementioned group.

Compound superconducting wire and method for manufacturing the same

A substance is located in a gradient magnetic field and held in a levitating state by a magnetic force produced by the gradient magnetic field. The substance as such in the levitating state is heated and melted by ray or heat irradiation or by a resistance heater. Thereafter, the heating is stopped, and the substance is cooled as such in the levitating state. Since the magnetic force realizes the microgravity field where the substance is melted and cooled in the levitating state, the substance is formed to an ideally spherical shape with an extremely smooth surface.

Floating/melting using dummy micro-gravitational field by magnetic force

Growing community of inventors

Sendai, Japan

Satoshi Awaji