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How to clean rust off Pallasite slabs

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#1 bigdob24

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Posted 09 January 2020 - 03:01 PM

I’ve got 3 pieces that have rusted and need cleaned and protected.

This will have to be a gentle cleaning method as they seem fragile, hopefully a soak and light brushing.

Any suggestions 

Can electrolysis work ? 

BD


Edited by bigdob24, 09 January 2020 - 03:34 PM.


#2 bigdob24

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Posted 10 January 2020 - 04:49 PM

I’ve been told electrolysis is my best choice followed by a good bake in the oven and a gun oil finish.

BD



#3 RussD

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Posted 11 January 2020 - 10:35 AM

BD,

Yes that is my understanding as well from a local meteorite expert.  The key though is to keep the meteorite in the electrolysis bath for a very long time.  Soaks that last a week or longer is not out of the question.

 

Russ



#4 bigdob24

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Posted 11 January 2020 - 03:26 PM

Russ, that seems like a long time. I’ve never done this but all the articles and YouTube vids for cleaning coins and things are short soaks . If it was an object covered in thick rust/corrosion I would say yes . These have rust evident under a scope but not excessive.

Ill be doing this soon and will report back with what I find.

BD



#5 bigdob24

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Posted 28 June 2020 - 12:35 PM

I did electrolysis on the pieces.
I found that 3 to 4 hrs and changed the solution once did the job.

They needed a little gentle  brushing and then baked in a 200° Oven for a couple hrs and coated with a fine gun oil .

After a a day or two I wiped them clean and mounted them in a nice airtight case for display.

They turned out great


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#6 lee14

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Posted 28 June 2020 - 02:02 PM

The gun oil is a good choice. Once the rust or contaminants are removed, gun oil will provide excellent long term protection.

 

Lee




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