Technique for passivating stainless steel

Details Technique for passivating stainless steel Technique for passivating stainless steel

1978-09-08

1980-03-25

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 614A, 148 315, 148 615Z, 204 56R, C23F 710

Patent

active

041949293

ABSTRACT:
Stainless steel is "activated" by blasting the metal surface with cast iron rit or cut steel blasting abrasive. Particles of ferrous metal abrasive are embedded in the corrosion resistant steel surface, causing a passive coating to form in a conventional phosphating or oxalating solution. This may be desirable to make the stainless steel surface non-reflective and more corrosion resistant.

REFERENCES:
patent: 1007069 (1911-10-01), Coslett
patent: 1303627 (1919-05-01), Baines
patent: 1798218 (1931-03-01), Pacz
patent: 2356575 (1944-08-01), Frasch
patent: 2800421 (1957-07-01), Goodspeed et al.
patent: 3459604 (1969-08-01), Freeman et al.
patent: 3879237 (1975-04-01), Faigen

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