Archived posting to the Leica Users Group, 2003/07/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 09:45 AM 7/23/2003 -0700, you wrote: >In my previous posting about the deposition of titanium onto a >substrate, I noted that PVD stands for physical vapor deposition. I >was wrong PVD means plasma vapor deposition. I apologize for any >inconvenience my comment may have caused. Yeah, plasmas are usually used to etch stuff away with - not deposit stuff... :-) BTW, PVD works by bringing a source of coating material to a boil (happens in low vacuum). The vapors of coating material condenses on the item which needs the coating applied. That's all there is to it... The trick is to make the coating stick. This is often done by using a metal with good "sticking characteristics" as an adhesion layer for the final layer of coating. E.g. for gold plating, chromium is often used as the adhesion layer. Tom - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html