GB/T 20017-2005 (English Version) PDF

Standard No.: GB/T 20017-2005
Language: Chinese, Available in English version
Release Date: 2005
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 20017-2005

Scope: This standard outlines the gravimetric and other chemical analytical methods, which have been standardized to some extent, for the determination of the average surface density of anodized or autocatalytically deposited, mechanically deposited, chemically converted, electrodeposited, hot-dip galvanized and vacuum deposited coatings. general method. The various methods are described below: - gravimetric methods for measuring the surface density of the coating by chemically or electrochemically dissolving the coating or the substrate; - analytical methods for determining the surface density of the coating by means of photometric or volumetric methods of dissolving the coating; - physical analysis method for measuring the surface density of the coating with non-destructive testing equipment. Except for the gravimetric method described in GB/T 9792, this standard does not give the measurement uncertainty of the cited methods.

GB/T 20017-2005 Referenced Document

GB/T 12599-2002 Metallic coatings--Electroplated coatings of tin--Specification and test methods
GB/T 3138-1995 Terminology for metallic coating, chemical treatment and related process
GB/T 8015.1-1987 Test methods for thickness of anodic oxidation coatings on aluminium and aluminium alloys--Gravimetric method
GB/T 9792-2003 Conversion coatings on metallic materials-Determination of coating mass per unit area-Gravimetric methods
GB/T 9799-1997 Metallic coatings--Electroplated coatings of zinc on iron or steel

2005 GB/T 20017-2005 Metallic and other inorganic coatings.Measurement of mass per unit area.Review of gravimetric and chemical analysis methods