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1. (WO2014206697) TIN COATING, ASSOCIATED CONTACT ELEMENT, AND METHOD FOR APPLYING A TIN COATING

Pub. No.:    WO/2014/206697    International Application No.:    PCT/EP2014/061558
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Jun 05 01:59:59 CEST 2014
IPC: C25D 5/10
C25D 7/00
C25D 3/30
Applicants: ROBERT BOSCH GMBH
Inventors: HUEGEL, Werner
Title: TIN COATING, ASSOCIATED CONTACT ELEMENT, AND METHOD FOR APPLYING A TIN COATING
Abstract:
The invention relates to a tin coating (5) having a substantially equiaxial granular structure, a contact element having such a tin coating (5), and a method for applying such a tin coating (5). According to the invention, the tin coating (5) comprises at least two sequentially applied tin layers (Sn1, Sn2, ZW_Sn) composed of materials containing tin, the granular structures of which tin layers each having a specified grain orientation, wherein the granular structures of two adjacent sequentially applied tin layers (Sn1, Sn2, ZW_Sn) have different grain orientations, so that laterally extending grain boundaries (10.2) arise in the tin layers (Sn1, Sn2, ZW_Sn) adjacent to each other.