ASTM D7639 Determination of Zirconium Treatment Weight or Thickness on Metal Substrates by X-Ray Fluorescence
ASTM D7639 includes determining the mass of zirconium (Zr) coating weight per unit area of metal substrates using X-ray fluorescence (XRF) spectrometry. The values are considered as a standard when expressed in SI units.
Scope:
The process outlined in ASTM D7639 is intended to offer a method for determining the coating weight of zirconium treatments applied to metal substrates. The overall coating weight and zirconium coating weight of a zirconium-containing treatment can be determined using the ASTM D7639 procedure.
Procedure:
In ASTM D7639 testing, the peak intensity of the zirconium line (at 0.0786 nm or 15.747 keV) is measured when the test specimen is put in the X-ray beam. The coating weight of the zirconium treatment in mg/m2 or mg/ft2 (or m or nm) is calculated by comparing the intensity to a previously constructed calibration curve or calculation. The exact link between the observed number of counts and the appropriate coating weight (or coating thickness) is determined for each specific combination of substrate and zirconium-containing treatment.
Specimen size:
Test specimens must be flat and free of burrs and deformities in the measuring region.
Calculation:
For ASTM D7639 testing, the weight of the zirconium coating on the test specimen is computed automatically using the calibration curve.
Conclusion:
The process outlined in ASTM D7639 is intended to offer a method for determining the coating weight of zirconium treatments applied to metal substrates.
Talk to Our Experts Today!
Submit your contact info and we’ll get back to you within 24 hours
Full Spectrum of ASTM Material Testing — Backed by 2,000+ Trusted Lab Partners
ASTM standards for chemical composition, physical properties, failure analysis, and other routine and non-routine testing for polymers and plastics
ASTM standards for determination of mechanical, physical, and thermal properties, and performance of monolithic and composite ceramics
ASTM standards guiding various destructive, non-destructive and analytical tests for quality control of different metals and alloys
ASTM standards for chemical analysis of solid, liquid and gaseous materials for specification compliance and quality control
ASTM standards for various chemical, physical, stability and exposure analysis of paints and coatings
Our Services
Metrology
A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.
Learn More
Materials Testing
ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.
Learn More
Product Testing
Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.
Learn More
