- 专利标题: Preparation of metal substrate surfaces for electroplating in ionic liquids
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申请号: US14271371申请日: 2014-05-06
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公开(公告)号: US09758888B2公开(公告)日: 2017-09-12
- 发明人: Evgeniya Freydina , Shiyun Ruan , Christopher A. Schuh , Alan C. Lund
- 申请人: XTALIC CORPORATION
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Downey Brand LLP
- 主分类号: C25D5/44
- IPC分类号: C25D5/44 ; C25D3/66 ; C25D5/18 ; C25D5/48 ; C25D11/04 ; C25F1/04 ; C25F1/12
摘要:
Metal surface pretreatments using ionic liquids prior to electroplating are disclosed. The surface treatments include forming an activated metal substrate surface by removing any naturally formed metal oxide layers formed on the surfaces of the metal substrates. According to some embodiments, the surface treatments include exposing the metal substrate to a non-aqueous ionic liquid. In some embodiments, an electrical current is applied to the metal substrate to assist removal of the metal oxide layer. The electrical current can be a pulsed anodic current. After activating the surface, a metal layer can be deposited on the activated surface. In some embodiments, the metal layer is electrodeposited in the same ionic liquid used to form the activated surface. The resultant metal coating is resistant to scratching and peeling.
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