GB/T 16921-1997
Measurement of metallic coating thickness X-ray spectrometric methods (English Version)
- Standard No.
- GB/T 16921-1997
- Language
- Chinese, Available in English version
- Release Date
- 1997
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2006-04
- Replace By
- GB/T 16921-2005
- Latest
- GB/T 16921-2005
- Scope
- This standard specifies the X-ray spectroscopic method for measuring the thickness of metallic coatings. The method specified in this standard is a non-contact non-destructive thickness measurement method, which can measure some three-layer systems at the same time. The measurement method used in this standard is basically a method for determining the mass per unit area. If the density of the covering material is known, the measurement can also be expressed in terms of the linear thickness of the covering. The actual thickness measurement range of overburden materials mainly depends on the allowable measurement uncertainty. And it varies with the equipment used and operating conditions. Typical measurement ranges for commonly used cladding materials are given in Appendix A (an appendix to the standard).
GB/T 16921-1997 history
- 2005 GB/T 16921-2005 Metallic coatings.Measurement of coating thickness.X-ray spectrometric methods
- 1997 GB/T 16921-1997 Measurement of metallic coating thickness X-ray spectrometric methods
