Ferrous metal magnetite coating processes and reagents

Details Ferrous metal magnetite coating processes and reagents Ferrous metal magnetite coating processes and reagents

2011-06-21

2011-06-21

King, Roy (Department: 1733)

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C427S309000, C148S243000

Reexamination Certificate

active

07964044

ABSTRACT:
A process for forming a magnetite coating on a ferrous metal surface and for chemical reagents used to implement the coating process. The process comprises the step of making the ferrous metal surface more reactive by contacting the surface with an activating reagent and then contacting the activated surface with an oxidizing reagent to form the coating at a relatively low temperature range. The surface is activated by contact with an acid solution to form a surface rich in reactive iron. The activated surface is then oxidized by contact with an aqueous reagent of alkali metal hydroxide, alkali metal nitrate, alkali metal nitrite, and mixtures thereof.

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