Jx Nippon Mining Metals Corporation

Jx Metals Corporation

Satoru Morioka

Atsushi Miki

Hideta Arai

Toshiyuki Ono

Ryo Fukuchi

Hajime Momoi

Kenji Sato

Yoshitaka Shibuya

Hiroyoshi Yamamoto

Hirofumi Watanabe

Kenta Aoyagi

Akihiko Chiba

A production method of an additive manufactured object is provided. The method is an EB-based additive manufacturing method of spreading a pure copper powder, preheating the pure copper powder and thereafter partially melting the pure copper powder by scanning the pure copper powder with an electron beam, solidifying the pure copper powder to form a first layer, newly spreading a pure copper powder on the first layer, preheating the pure copper powder and thereafter partially melting the pure copper powder by scanning the pure copper powder with an electron beam, solidifying the pure copper powder to form a second layer, and repeating the foregoing process to add layers. The pure copper powder is a pure copper powder with a Si coating formed thereon, and the preheating temperature is set to be 400° C. or higher and less than 800° C.

Production method of additive manufactured object using pure copper powder having Si coating

A copper heat dissipation material having a satisfactory heat dissipation performance is provided. The copper heat dissipation material has an alloy layer containing at least one metal selected from Cu, Co, Ni, W, P, Zn, Cr, Fe, Sn and Mo on one or both surfaces, in which surface roughness Sz of the one or both surfaces, measured by a laser microscope using laser light of 405 nm in wavelength, is 5 &#x3bc;m or more.

Copper heat dissipation material, carrier-attached copper foil, connector, terminal, laminate, shield material, printed-wiring board, metal processed member, electronic device and method for manufacturing the printed wiring board

Provided herein is a printed wiring board that can desirably dissipate the heat of a heat-generating component. The printed wiring board includes one or more wires, and one or more heat-generating components. The one or more wires include a rolled copper foil, either partly or as a whole. The one or more heat-generating components and the one or more wires are directly or indirectly connected to each other.

Printed wiring board, electronic device, catheter, and metallic material

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Tokyo, Japan

Satoru Morioka