Method for electrolytic etching of gray irons with Stead's reage

Details Method for electrolytic etching of gray irons with Stead's reage Method for electrolytic etching of gray irons with Stead's reage

1976-02-02

1976-12-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20412995, C25F 306

Patent

active

039961192

ABSTRACT:
A process for electrolytically etching phosphorus bearing gray irons using Stead's reagent is provided. Stead's reagent, which is used as the electrolyte in the etching process is composed of 1.2% cupric chloride, 4.6% magnesium chloride, 2.8% HCl and 91.4% ethanol. The time required for etching both low and high phosphorus bearing irons is reduced to 90 seconds or less and clear grain cell definition in both high and low phosphorus-containing gray iron is achieved by using Stead's reagent as the electrolyte in an electrolytic cell wherein the specimen to be etched operates as the anode.

REFERENCES:
patent: 2516105 (1950-07-01), Mateosian
patent: 2752304 (1956-06-01), Darmois et al.

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