Mitsubishi Materials Corporation

Jun Kato

Koichi Kita

Toshihiko Saiwai

Yuki Ito

Hiroyuki Matsukawa

This copper alloy powder having an excellent laser absorptivity includes: either one or both of B and S in an amount of 0.003 mass % to 5.0 mass %, with a remainder being Cu and inevitable impurities, wherein an average particle diameter is 20 &#x3bc;m to 80 &#x3bc;m. This copper alloy powder having an excellent laser absorptivity is preferably a powder for metal additive manufacturing.

Copper alloy powder having excellent laser absorptivity

A manufacturing method of a copper bonded part in which a first copper member and a second copper member are bonded together. The first copper member and the second copper member are made of copper or a copper alloy, and at least one of the first copper member and the second copper member includes a copper porous body made of copper or a copper alloy. This manufacturing method has a bonding material disposing step Sof disposing a bonding material between the first copper member and the second copper member, and a reduction sintering step Sof heating and holding the first copper member, the second copper member, and the bonding material in a reducing atmosphere in a range of 600&#xb0; C. or higher and 1,050&#xb0; C. or lower. The bonding material contains a copper oxide or a mixture of metallic copper and the copper oxide.

Manufacturing method of copper bonded part

A porous copper body including a skeleton having a three-dimensional network structure is provided. An oxidation-reduction layer formed by an oxidation-reduction treatment is provided on a surface of the skeleton, and the oxygen concentration of the entirety of the skeleton is set to be 0.025 mass % or less.

Porous copper body, porous copper composite part, method for manufacturing porous copper body, and method for manufacturing porous copper composite part

A porous copper body including a skeleton having a three-dimensional network structure is provided. An oxidation-reduction layer formed by an oxidation-reduction treatment is provided on a surface of the skeleton, and the average crystal grain size of an entirety including the skeleton and the oxidation-reduction layer is 5% or more of the diameter of the skeleton.

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Kitamoto, Japan

Jun Kato