Let's talk bluing

Paladinpainter · 03-17-2015, 04:30 AM

Nukem556:
I am sorry to have mis-attributed the sodium nitrate discovery. I guess Mark and sodium are linked in my mind because of his research. I apologize.
David, the chemistry involved in the effect of adding sodium nitrate goes way beyond the 'D' I got in Chem.1 . But your question about nitre bluing raises a puzzling phenomena: why does an unoxidized piece of steel appear to change color as its heated from 400 to 600 degrees F ?
Regards,

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03-17-2015, 04:30 AM	#8
Paladinpainter User Join Date: Nov 2009 Location: Vermont Posts: 64 Thanks: 14 Thanked 45 Times in 15 Posts	Nukem556: I am sorry to have mis-attributed the sodium nitrate discovery. I guess Mark and sodium are linked in my mind because of his research. I apologize. David, the chemistry involved in the effect of adding sodium nitrate goes way beyond the 'D' I got in Chem.1 . But your question about nitre bluing raises a puzzling phenomena: why does an unoxidized piece of steel appear to change color as its heated from 400 to 600 degrees F ? Regards,