公开(公告)号：US20050025990A1

公开(公告)日：2005-02-03

申请号：US10930316

申请日：2004-08-31

申请人： Christopher Laurello ,  Derek Tyler ,  Szuchain Chen ,  Julius Fister

发明人： Christopher Laurello ,  Derek Tyler ,  Szuchain Chen ,  Julius Fister

IPC分类号： B32B15/04 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  H05K3/24

CPC分类号： C23C30/00 ,  H05K3/244 ,  Y10T428/12458 ,  Y10T428/12569 ,  Y10T428/12576 ,  Y10T428/12694 ,  Y10T428/12708 ,  Y10T428/12715 ,  Y10T428/12722 ,  Y10T428/12792 ,  Y10T428/12903 ,  Y10T428/26 ,  Y10T428/265 ,  Y10T428/31678

摘要： The present invention is directed to a coated substrate, comprising: an antitarnish layer deposited on a substrate in an amount effective to prevent tarnishing of said coated substrate; and an outer layer deposited onto said antitarnish layer, said outer layer comprising tin or tin alloys having at least 50% by weight tin. The present invention is also directed to coated substrates having a concentration gradient of antitarnish agent diffused into the coating, as well as methods of forming such coated substrates.

公开(公告)号：US6136460A

公开(公告)日：2000-10-24

申请号：US54899

申请日：1998-04-03

申请人： Szuchain Chen ,  Julius Fister ,  Dennis Brauer ,  Arvind Parthasarathi ,  Christopher Laurello

发明人： Szuchain Chen ,  Julius Fister ,  Dennis Brauer ,  Arvind Parthasarathi ,  Christopher Laurello

IPC分类号： C23C28/00 ,  C23C28/02 ,  B32B19/00 ,  B32B9/00

CPC分类号： C23C28/021 ,  C23C28/023 ,  Y10T428/12021 ,  Y10T428/12687 ,  Y10T428/12694 ,  Y10T428/12708 ,  Y10T428/12722 ,  Y10T428/24942

摘要： A method of introducing an anti-tarnish agent into the matrix of a tin coating to reduce oxidation and/or yellowing of the tin coating. The agent is preferably zinc, indium or phosphorous and can be deposited in a molten form to alloy with the existing tin coating. Alternatively, the existing tin coating may be exposed to a chemical bath including the agent and later heated to reflow the tin coating and agent thereby incorporating the agent into the matrix of the tin coating.

摘要翻译： 将防晦暗剂引入锡涂层的基质中以减少锡涂层的氧化和/或变黄的方法。 试剂优选为锌，铟或磷，并且可以以熔融形式沉积以与现有的锡涂层合金。 或者，现有的锡涂层可以暴露于包括该试剂的化学浴中，并随后被加热以使锡涂层和试剂回流，从而将该试剂掺入锡涂层的基质中。

公开(公告)号：US06183886B2

公开(公告)日：2001-02-06

申请号：US09213545

申请日：1998-12-17

申请人： Szuchain Chen ,  Julius Fister ,  Christopher Laurello

发明人： Szuchain Chen ,  Julius Fister ,  Christopher Laurello

IPC分类号： H01R1303

CPC分类号： C23C28/021 ,  C23C28/00 ,  C23C28/023 ,  Y10S428/929 ,  Y10T428/12715 ,  Y10T428/12792

摘要： A tin coated electrical or electronic component has enhanced resistance to oxidation and tarnishing as well a smaller increase in contact resistance when exposed to elevated temperatures. These benefits are achieved by depositing a relatively thin, on the order of 5-50 angstroms thick, layer of zinc on the tin coating prior to heating. A subsequent step of heating the sample to a temperature and time effective to convert all free tin to an intermetallic imparts the additional advantage of reducing the coefficient of friction.

摘要翻译： 镀锡的电气或电子部件具有增强的抗氧化和变色性，以及当暴露于升高的温度时接触电阻的增加较小。 这些优点通过在加热之前在锡涂层上沉积约5-50埃厚的锌层来实现。 将样品加热至有效将所有游离锡转化为金属间化合物的温度和时间的后续步骤赋予降低摩擦系数的额外优点。