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Lead print II

Material Name: Steel
Recipe No.: 12065
Primary Chemical Element in Material: Fe
Sample Type: Bulk
Uses: Lead segregation
Etchant Name: Lead print II
Type (Macro/Micro): Macro
Etching Method: Chemical
Etchant (Electrolyte) Composition: Water saturated with hydrogen sulfide
Procedure (Condition): The paper is placed on the surface of the disc for about 1 min. lt is then removed and placed in water saturated with hydrogen sulfide for about 2 to 3 min. The location of the lead is indicated by brown spots of lead sulfide on the gelatin paper.
Note: Lead print methods can also be used to reveal the lead distribution. Volk used gelatin paper soaked in concentrated acetic acid.
Reference: George F. Vander Voort, Metallography, Principles and Practice, ASM International, 1999, pp. 52-56.