GB/T 8753.2-2005: Anodizing of aluminium and aluminium alloys -- Assessment of quality of sealed anodic oxide coatings -- Part 2: Phosphoric acid/chromic acid test

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Scope

This part specifies the method for assessing the quality of sealed anodic
oxidation coatings of aluminum and aluminum alloy, after nitric acid predip AND
etching in phosphoric acid / chromic acid solution, through the loss of mass.
This part applies to both hot-sealed anodic oxidation coating and cold-sealed
anodic oxidation coating.
This part does not apply to the anodic oxidation coating, which was treated by
the following processes:
a) Hard anodic oxidation coating that is usually not sealed;
b) Anodic oxidation coating that has been sealed in a dichromate solution;
c) Anodic oxidation coating produced in chromic acid solution;
d) Anodic oxidation coating after hydrophobic treatment.

Basic Data

Standard ID	GB/T 8753.2-2005 (GB/T8753.2-2005)
Description (Translated English)	Anodizing of aluminium and aluminium alloys. Assessment of quality of sealed anodic oxide coatings. Part 2: Phosphoric acid/chromic acid test with nitric acid predip
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H21
Classification of International Standard	25.220.20
Word Count Estimation	5,520
Date of Issue	2005-07-04
Date of Implementation	2005-12-01
Older Standard (superseded by this standard)	GB/T 14952.2-1994
Adopted Standard	EN 12373-7-1999; NEQ
Regulation (derived from)	Announcement of Newly Approved National Standards No. 10 of 2005 (No. 84 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee
Summary	This standard specifies: the anodized aluminum and aluminum nitrate film by prepreg, in phosphorus chromic acid etching solution, mass loss assessed by its sealing quality methods. This standard applies to both heat sealing at anodic oxide film, Also suitable for cold sealing anodic oxide film. This standard does not apply to the following Process anodic oxide films: a, usually without sealing treatment hard anodic oxide film, b, sealing in dichromate solution treated anodic oxide film, c, in chrome acid solution produced an anodic oxide film, d, hydrophobically treatment anodic oxide film.