August 03, 2021, 09:47:17 AM
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Topic: Steel dying  (Read 236 times)

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Offline K.O.B.タイタン

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Steel dying
« on: February 27, 2021, 02:02:32 PM »




Does anyone know if Co3(PO4)2 is soluble in iron?

Offline Enthalpy

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Re: Steel dying
« Reply #1 on: March 03, 2021, 06:30:38 AM »
Welcome!

To my surprise, cobalt phosphate can be melted around 1100°C without decomposing.

Intuition, and nothing more, suggests that Co would dissolve separately in liquid Fe, O would react with Fe, and P dissolve in Fe before slowly evaporating.

An other worry is that a solid can lose or change its colour by dissolving.

But you might try to sinter a thin powder mix of cobalt phosphate and steel. This can happen well below 1100°C.

If you get nice colours, please show us!  :D

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