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BS ISO 16962:2017 Surface chemical analysis. Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry >
BS ISO 16962:2017 Surface chemical analysis. Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry, 2017
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Apparatus
- 5.1 Glow-discharge optical-emission spectrometer
- 5.1.1 General
- 5.1.2 Selection of spectral lines
- 5.1.3 Selection of glow-discharge source type
- 6 Adjusting the glow-discharge spectrometer system settings
- 6.1 General
- 6.2 Setting the parameters of a DC source
- 6.2.1 Constant applied current and voltage
- 6.2.2 Constant applied current and pressure
- 6.2.3 Constant voltage and pressure
- 6.3 Setting the discharge parameters of an RF source
- 6.3.1 General
- 6.3.2 Constant applied power and pressure
- 6.3.3 Constant applied power and DC bias voltage
- 6.3.4 Constant effective power and effective RF voltage
- 6.4 Minimum performance requirements
- 6.4.1 General
- 6.4.2 Minimum repeatability
- 6.4.3 Detection limit
- 7 Sampling
- 8 Calibration
- 8.1 General
- 8.2 Calibration samples
- 8.2.1 General
- 8.2.2 Brass calibration samples
- 8.2.3 Zn-Al alloy samples
- 8.2.4 Low alloy iron or steel samples
- 8.2.5 Stainless steel samples
- 8.2.6 Nickel alloy samples
- 8.2.7 Aluminium-silicon alloy samples
- 8.2.8 Aluminium-magnesium alloy samples
- 8.2.9 High-purity copper and zinc samples
- 8.3 Validation samples and optional RMs for calibration
- 8.3.1 General
- 8.3.2 Zinc-nickel electrolytically coated RM
- 8.3.3 Zinc-iron electrolytically coated RM
- 8.3.4 Zinc-aluminium hot dip coated RM
- 8.3.5 Zinc-iron hot dip coated and annealed RM
- 8.4 Determination of the sputtering rate of calibration and validation specimens
- 8.5 Emission intensity measurements of calibration specimens
- 8.6 Calculation of calibration equations
- 8.7 Validation using reference materials
- 8.7.1 General
- 8.7.2 Checking analytical accuracy using bulk reference materials
- 8.7.3 Checking analytical accuracy using surface layer reference materials
- 8.8 Verification and drift correction
- 9 Analysis of test specimens
- 9.1 Adjusting discharge parameters
- 9.2 Setting of measuring time and data acquisition rate
- 9.3 Quantifying depth profiles of test specimens
- 10 Expression of results
- 10.1 Expression of quantitative depth profile
- 10.2 Determination of total coating mass per unit area (coating aeric mass)
- 10.2.1 General method
- 10.2.2 Method for special applications
- 10.3 Determination of average mass fractions
- 11 Precision
- 12 Test report
- Annex A (normative) Calculation of calibration constants and quantitative evaluation of depth profiles
- Annex B (informative) Suggestions concerning suitable spectral lines
- Annex C (informative) Determination of coating mass per unit area (coating areic mass)
- Annex D (informative) Additional information on international cooperative tests
- Bibliography [Go to Page]