ON ANODIC OXIDATION OF ALUMINUM IN CHROMIC ACID.

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Abstract:

Particular attention was here given to working with bath temperatures above 45 degrees C. Oxide films are here formed much quicker than with the earlier low bath temperatures and are characterized by an attractive and completely opaque appearance. They can also be dyed relatively quickly in saturated tints. They thus become highly suitable for decorative purposes which was not the case in the past. The report also discusses in detail the influence of impurity anions in the chromic acid bath and specifically the effect of sulfate ions on the opaqueness of the anodized items. It further makes suggestions on the control of the bath andor possibilities of regeneration in the chromic acid process and gives some indications in regard to cost calculation. Author

Author(s):
Modic, F.
Author Organization(s):
INSTITUTE OF MODERN LANGUAGES INC WASHINGTON D C
Supplementary Note:
Neuere Erfahrungen auf dem Gebiete der Anodischen Oxydation von Aluminum in Chromsaure, trans. of Aluminum (West Germany) v39 p169-80 1963.
Annotation:
Translation of West German research: On anodic oxidation of aluminum in chromic acid.
Pagination:
0035

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AERDL-T-1854-66, TT-66-61781
Contract/Grant Number(s):
DA-44-009-AMC-1563(T)
Project Number(s):
DA-1-C-024401-A-328
Monitor Series:
T-1854-66, 66-61781
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*ANODIC COATINGS, *ALUMINUM), OXIDATION, CHROMIC ACID, DIRECT CURRENT, PROCESSING, WEST GERMANY
Field(s)/Group(s):
Coatings, Colorants and Finishes, Metallurgy and Metallography, Fabrication Metallurgy
Report Date:
1966 Jun 01