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Article: The atomic energy of surface finishes: taking a smaller perspective with surface finishes helps to understand the benefits of each type of metal coating.(FINAL FINISH FORUM)
- Article from:
- Printed Circuit Design & Fab
- Article date:
- January 1, 2009
- Author:
CopyrightCOPYRIGHT 2009 UP Media Group, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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EVERYONE HAS DIFFERING PERSPECTIVES on the world. There are Democrats and Republicans, Yankees fans and Red Sox fans, cat people and dog lovers and men from Mars and women from Venus--and then there are chemists and the rest of the world. Chemists have a much smaller perspective on the universe, at the atomic level. When I get a question about surface finishes, I start thinking atoms. The character of the materials coated on PCB copper results from the way they are deposited, atom by atom. If we think of the mechanisms of surface finish deposition, we can easily predict their performance, hardness, conductivity and wear resistance.
The simplest metal deposition ...