Method for passivating chromium

Details Method for passivating chromium Method for passivating chromium

1974-04-30

1976-02-17

Weiffenbach, Cameron K.

Coating processes

Applying superposed diverse coating or coating a coated base

Settable inorganic coating

427405, 427419, 148 63, 148 631, C23F 702

Patent

active

039392937

ABSTRACT:
Chromium is passivated by forming a chromium oxide layer thereon by heating at temperatures of about 450.degree.C in an atmosphere containing oxygen. While useful, per se, the process finds particular application as an integral part of overall processing schemes where thermal cycles are used.

REFERENCES:
patent: 2217802 (1940-10-01), Koehring
patent: 3480483 (1969-11-01), Wilkinson
patent: 3634147 (1972-01-01), Helwig et al.

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