Method for superficial marking of zirconium and certain other me

Details Method for superficial marking of zirconium and certain other me Method for superficial marking of zirconium and certain other me

1983-03-04

1985-10-15

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LM, 346 76L, B23K 2600

Patent

active

045476497

ABSTRACT:
A marking system for providing a superficial metallurgically immaterial mark on zirconium, its alloys, and other metals is disclosed. The method includes producing a thin oxide layer on the surface of the metal, and locally heating a portion of the oxide layer to reduce it to the base metal and oxygen, which is driven into solid solution, thereby leaving a mark of contrasting color.

REFERENCES:
patent: 3663793 (1972-05-01), Petro et al.
patent: 3747117 (1973-07-01), Fechter
patent: 4307408 (1981-12-01), Kiyohara et al.
patent: 4317123 (1982-02-01), Namiki et al.

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