TWI818164B
The purpose of the present invention is to provide a novel composite copper member. Provided by the present invention is a composite copper member which has a metal layer comprising metal other than copper formed on micro irregularities including copper and copper oxide on at least some of the surfa...
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Sprache: | chi |
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Zusammenfassung: | The purpose of the present invention is to provide a novel composite copper member. Provided by the present invention is a composite copper member which has a metal layer comprising metal other than copper formed on micro irregularities including copper and copper oxide on at least some of the surfaces of the copper member, wherein the surface of the composite copper member where the metal layer is formed has micro irregularities, the mean length of roughness profile elements (Rsm) of the surface of the composite copper member is 550 nm or less, the surface-area ratio is 1.3 to 2.2, and the average thickness of the metal layer in the vertical direction is 15 nm to 150 nm. |
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