Steve, I had some contacts with Nano Technologies, at one time they were right up the road from where I live. They were looking at doing some projects for automated use of the foil and since I knew PnP machines well and I wrote a lot of code it was a good match. I have played with the material, it is really neat stuff. You can do large scale soldering "In A Flash". As for the strength of the joints their demo kit had two 1 inch square pieces of solder coated copper. In a "Flash" they get soldered and you can not pull them apart. I tried it in a vise and a hammer trying to shear the two blocks. No Way. Bob Kondner -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Creswick Sent: Thursday, March 04, 2010 1:34 PM To: [log in to unmask] Subject: Re: [TN] [LF] Soldering with Nanofoils Eric, Your question nicely leads into one that I have been pondering the last few days - the use of Nanofoils in soldering/SMD applications. I am just beginning to look into this but thought I might get some field experience opinions from the forums. One can go to the Reactive NanoTechnologies web site at http://www.rntfoil.com/site/ At least one design realization consists of a foil created by alternating layers of nm thick Al & Ni. Said foil would be placed between two solder-coated surfaces, or solder performs. The foil would be ignited [soldering iron, laser, etc] and the highly exothermic, self-propagating reaction would locally reflow the solderable surfaces creating a bond. The rapid exothermic process would minimize delta CTE issues between components, leaving the bulk temperature of the components well below what they would experience during a 'normal' reflow process. Leaving aside for the moment, any issues related to possibly having to physically hold the components in place during the process, I have two predominantly material questions - 1 - Has anyone attempted to use this in a production environment yet? 2 - What happens to the strength of the joints, assuming the by-products of the reaction stay within the interfacial region? Just curious. Seems like a nice tool looking for an application. Steve C -----Original Message----- From: Leadfree [mailto:[log in to unmask]] On Behalf Of Eric Bonatti Sent: Thursday, March 04, 2010 11:23 AM To: [log in to unmask] Subject: [LF] magnetic solders? Hello all, Have you folks seen this? http://www.articleant.com/gen/13521-new-magnetic-solders-are-a-leap-towards- green-alternatives.html I'm really curious to hear your thoughts on it. 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