Test medium and method for detecting phosphorus segregates in me

Details Test medium and method for detecting phosphorus segregates in me Test medium and method for detecting phosphorus segregates in me

1986-08-19

1988-01-12

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204140, 2041415, 436 78, 436103, C25F 306, G01N 3320

Patent

active

047189924

ABSTRACT:
An aqueous electrolytic solution of a molybdate ion and an oxidizing agent is effective to detect phosphorus segregates in a metallic material, particularly cast steel through electrolysis. Segregated phosphorus can be detected by (a) applying a test sheet against a surface area of the metallic material to be examined for segregation, (b) introducing an aqueous electrolytic solution comprising 0.1 to 20% by weight of a molybdate ion and an oxidizing agent between the metallic material surface area and the sheet, (c) contacting a cathode plate with the sheet, (d) effecting electrolysis with the metallic material made anode, (e) removing the sheet from the metallic material surface, and (f) treating the sheet with a reducing agent.

REFERENCES:
patent: 3425805 (1969-04-01), Grobin
patent: 3530045 (1970-09-01), Alburger
patent: 3796543 (1974-03-01), Kamphake
patent: 4643978 (1987-02-01), Funahashi et al.
patent: 4643979 (1987-02-01), Funahashi et al.

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