tag:blogger.com,1999:blog-8198390912401056862.post5796405422867585004..comments2023-10-14T06:19:18.000-05:00Comments on Rocket Scientist: RS Classic: What Do You Know About Tin Whiskers?Stephanie Barrhttp://www.blogger.com/profile/17772217449161603561noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-8198390912401056862.post-8125108257181057602010-07-04T00:20:11.583-05:002010-07-04T00:20:11.583-05:00Could you do a sub-plot about a company who cut-co...Could you do a sub-plot about a company who cut-corners and caused the trouble of the crew in the story? You can explore the politics of space exploration, if you have the room.<br /><br />Could problems be avoided with constant inspections and maintenance or are the whiskers so fine that they are hard to clean. <br /><br />This quote from wikipedia is cool and scary "At frequencies above 6 GHz or in fast digital circuits, tin whiskers can act like miniature antennas, affecting the circuit impedance and causing reflections".Aron Sorahttps://www.blogger.com/profile/09327072976517417107noreply@blogger.comtag:blogger.com,1999:blog-8198390912401056862.post-46717753311430290112010-07-03T20:27:26.765-05:002010-07-03T20:27:26.765-05:00According to the latest research I've seen (I ...According to the latest research I've seen (I still follow this), that "may" delay onset. It is not considered (by the experts I know) definitive. When I first started studying this, most seem to think stress was "the" factor. Now, many things are seen as contributors and the definitive mechanism for why they form is still up in the air. On the GSFC website I have linked they have dozens of papers and publications, many of which challenge mitigations we used to think as fool proof.<br /><br />It is very difficult to keep up with this topic. When I presented this paper in 2007, one of the material experts responsible for the Space Station materials provided a correction, that it wasn't tin and some tin alloys, but just pure tin. Turns out he wasn't aware of the latest. <br /><br />Which I provide to demonstrate that I'm not necessarily aware of the latest either. I try to keep an ear out, but I'm quite certain much of what I understood is outdated. I do encourage anyone interested to check out the Goddard website.Stephanie Barrhttps://www.blogger.com/profile/17772217449161603561noreply@blogger.comtag:blogger.com,1999:blog-8198390912401056862.post-80445174721398488902010-07-03T16:38:01.986-05:002010-07-03T16:38:01.986-05:00Actually, sandwiching a layer of Ni between the Cu...Actually, sandwiching a layer of Ni between the Cu and Sn can act as enough of a diffusion barrier for the copper (so as to retard the formation of Cu6Sn5 at the Cu-Sn interface, which causes the stress in the first place) to mitigate the formation of tin whiskers (intermetallics.) This is pretty effective at room temperature.Relax Maxhttps://www.blogger.com/profile/01051381168322495999noreply@blogger.comtag:blogger.com,1999:blog-8198390912401056862.post-47227440535454982162010-07-03T10:50:43.019-05:002010-07-03T10:50:43.019-05:00Sounds like the plot of a fantasy novel. Wait...Sounds like the plot of a fantasy novel. Wait...The Motherhttps://www.blogger.com/profile/15157821003454766570noreply@blogger.comtag:blogger.com,1999:blog-8198390912401056862.post-72302843928929619232010-07-02T23:49:33.483-05:002010-07-02T23:49:33.483-05:00That's pretty cool.That's pretty cool.Darrell B. Nelsonhttps://www.blogger.com/profile/02851443183217238218noreply@blogger.comtag:blogger.com,1999:blog-8198390912401056862.post-72804244209821607092010-07-02T20:40:02.517-05:002010-07-02T20:40:02.517-05:00WOW, never knew.WOW, never knew.Jeff Kinghttps://www.blogger.com/profile/00667419764890599092noreply@blogger.com