Diffusion-coated metals

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

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B01J 2500, B01J 2502

Patent

active

049277987

ABSTRACT:
Iron and nickel are activated by diffusing aluminum into their surface at low temperature, and then leaching out some of that aluminum with caustic. So activated they are extremely pyrophoric and have their pyrophoric action improved by short dip in acid solution having pH about 2 to about 4. Foils of such metals so treated can be folded to further increase pyrophoric action.

REFERENCES:
patent: 3489694 (1970-01-01), Weidlich et al.

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