Noddy
Statesman
Posts: 672
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Post by Noddy on May 8, 2008 5:30:36 GMT
Hi Al, Any strong alkali will do, all you need is alkaline and conducting. Sodium carbonate (washing soda / soda ash) and sodium hydroxide (Caustic soda / lye) are the cheapest and most readily available. if you could tolerate the smell, ammonia solution would probably do too!
Rust only forms in acidic conditions, so the alkali inhibits rust formation, while at the same time conducting the electric current.
Keith
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