| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a plating bath achieving good performance of a plating film and to provide a plating method using the bath. <P>SOLUTION: The plating bath does not substantially contain a cyanide compound but contains: (A) a thiourea compound expressed by chemical formula (1), X<SP>1</SP>X<SP>2</SP>NC(=S)NX<SP>3</SP>X<SP>4</SP>; and (B) at least one of water-soluble salt or water-soluble complex of a metal, as a plating metal, selected from elements in groups 8 to 11, group 12 except for mercury, group 13, group 14 and group 15 in the fourth to sixth periods of the periodical table. In formula (1), X<SP>1</SP>, X<SP>2</SP>, X<SP>3</SP>and X<SP>4</SP>each represents hydrogen, an alkyl or allyl group, or a group expressed by chemical formula (2), -(CHZ<SP>1</SP>-CH<SB>2</SB>-S)<SB>n</SB>-Y. In formula (2), Z<SP>1</SP>represents hydrogen or a methyl group; n represents an integer of 0 to 10; Y represents a group expressed by chemical formula (3), -CHZ<SP>2</SP>-CH<SB>2</SB>-D. In formula (3), Z<SP>2</SP>represents hydrogen or a methyl group; D represents SH, OH, NX<SP>5</SP>X<SP>6</SP>or COOH; X<SP>5</SP>and X<SP>6</SP>may be identical or different from each other; and at least one in X<SP>1</SP>, X<SP>2</SP>, X<SP>3</SP>and X<SP>4</SP>is a group expressed by formula (2). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
