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PCE
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CPC Subgroup
C23C 22/70

using melts

Full Title

Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals > using melts

1 direct subcode

Child Classifications

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  • C23C 22/72 Treatment of iron or alloys based thereon