公开(公告)号：US5312541A

公开(公告)日：1994-05-17

申请号：US920061

申请日：1992-07-27

申请人： Jean-Francois Paulet ,  Bruno Boetsch ,  Fritz Schneeberger ,  Gunther Tscheulin ,  Hans Bohler

发明人： Jean-Francois Paulet ,  Bruno Boetsch ,  Fritz Schneeberger ,  Gunther Tscheulin ,  Hans Bohler

IPC分类号： C25D3/32 ,  C25D11/22

CPC分类号： C25D3/32 ,  C25D11/22

摘要： In acidic Sn(II)-containing electrolytes for coloring oxide layers on anodized aluminum or aluminum alloys, or for electroplating, the Sn(II)-ions are oxidized. By the addition of substances, so called stabilizers, to the electrolytes this oxidation can be more or less prevented i.e. Sn(II) can be more or less stabilized.Furthermore, the effectiveness of the stabilizer can be decisive for the quality of the deposit or the coloring of the oxide layer. It is known that the presence of substantial amounts of Sn(IV) along with Sn(II), as a result of inadequate stabilization of the Sn(II), impairs the quality of the surface treatment.An acidic, Sn(II)-containing electrolyte containing an addition of at least one soluble diphenylamine or substituted diphenylamine derivative stabilizes the Sn(II) and produces flawless coloring.

摘要翻译： 在用于在阳极氧化铝或铝合金上氧化层的酸性Sn（II）电解质或用于电镀的情况下，Sn（II）被氧化。 通过向电解质中添加所谓的稳定剂的物质，可以或多或少地防止这种氧化，即Sn（II）可以或多或少地稳定。 此外，稳定剂的有效性对于沉积物的质量或氧化物层的着色是决定性的。 已知由于Sn（II）的不稳定性，存在大量的Sn（IV）以及Sn（II）会损害表面处理的质量。 含有至少一种可溶性二苯胺或取代的二苯基胺衍生物的含有Sn（II）的酸性电解质使Sn（II）稳定并产生无瑕疵的着色。