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--- workshops:silicon_electric:workings [2010/04/09 11:10]
jj created
+++ workshops:silicon_electric:workings [2011/04/07 04:10] (current)
jj
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 {{:workshops:silicon_sm.jpg|}}
-re-adapt as write read run
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 //notes towards://
-crude silicon conductor granule manufacture http://www.popsci.com/diy/article/2005-10/making-silicon-sand
+crude silicon conductor granule manufacture http://www.rsc.org/education/chemistryteachers/GoToResource.asp?resourceid=11674ticle/2005-10/making-silicon-sand
+reactions:
+SiO2(s) + 2Mg(s) → 2MgO(s) + Si(s)
+Mg(s) + Si(s) → Mg2Si(s)
+MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(l)
+Mg2Si(s) + 4HCl(aq) → 2MgCl2(aq) + SiH4(g)
+(Higher silanes such as Si2H6 may also be produced.)
+SiH4 (g) + 2O2(g) → SiO2(s) + 2H2O(l)
 diy doping - [[http://www.freepatentsonline.com/5538903.html|Japan]] method; semi-conductor screenprinting; photoelectric copper chloride method (cuprous oxide)
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 Microwave smelter (800°C) based on David Reid Technique  http://www.periodictable.com/PopSci/2003/09/1/index.html
-David Reid Technique (1000°C) http://home.c2i.net/metaphor/mvpage.html and 1200°C kit http://home.c2i.net/metaphor/rt.html
+David Reid Technique (1000°C) http://home.c2i.net/metaphor/mvpage.html and 1200°C kit http://home.c2i.net/metaphor/rt.html - extended tests with various susceptors - materials which heat up when exposed to microwaves - was that two substances, graphite and magnetite, working together were required to achieve the kind of heating we were looking for
+susceptor method also see http://open3dp.me.washington.edu/?p=632
+Burnout kiln plans
+http://cs.artjewelrymag.com/artcs/forums/t/20315.aspx {{:workshops:silicon_electric:handbook_of_lost_wa_or_investment_casting.pdf|}}
+and useful related thread http://www.sciencemadness.org/talk/viewthread.php?tid=13144
 Metal Workshop Techniques:
@@ Line 38: / Line 58: @@
 Silicon/Graphite conductive ink: Liquid tape eg. http://www.sotabeams.co.uk/liquidtape.htm
+also see paper speakers: http://web.media.mit.edu/~plusea/?p=265

jonathan kemp

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