AW: [meteorite-list] RE: Dronino rusting

[Jörn Koblitz]

Dear Marcin,

Interesting results. The oxide shale is removed rather easily, but it will take considerable more time to get the salts out of the deep cracks in the metal portion of the meteorite. I suppose that 12 hrs will not be sufficient for such a thick slice. I had best result after about one week of electrochemical treatment. The good thing with this technique is that one can scale it up and treat numerous specimens at the same time.

Jörn

> -----Ursprüngliche Nachricht-----
> Von: Meteoryt.net [mailto:marcin at meteoryt.net]
> Gesendet: Montag, 6. Dezember 2004 23:33
> Cc: meteorite-list at meteoritecentral.com
> Betreff: [meteorite-list] RE: Dronino rusting
> 
> 
> ----- Original Message ----- 
> From: "Jörn Koblitz" <koblitz at microfab.de>
> 2. the SECOND best solution is to draw the salts out of the cracks by
> applying electrolysis using KOH or NaOH solution 
> (electrochemical cleaning).
> This technique is well established and described in detail here:
> http://nautarch.tamu.edu/class/anth605/File10a.htm#ELECTROCHEMICAL
> 
> Hello
> This is my verry first test of electro-chemical cleaning.
> I cleaned cuted specimen of Dronino around 700g. It was 
> cleaned for 24 hours
> in Water+ NaOH solution, but verry good cleaning results I see after
> 12hours.
> So here is photos.
> http://www.meteoryt.net/ebay/dronino_1.jpg
> http://www.meteoryt.net/ebay/dronino_2.jpg
> 
> I not use hammer or iron brush on this surface. All rust disapear
> 
> Next object will be oriented Taza
> 
> -----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
> http://www.Meteoryt.net             marcin at meteoryt.net
> http://www.PolandMET.com       marcin at polandmet.com
> http://www.Gao-Guenie.com      GSM +48(607)535 195
> --------[ Member of: Polish Meteoritical Society ]--------
> 
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