Coating Thickness Testing
Coating thickness is an important process parameter, which plays an important role in product quality, process control and cost control. It directly affects the corrosion resistance, electrical conductivity and even the reliability of the plated parts. Therefore, the measurement and control of coating thickness is an important control index of metal quality. As a professional reliability third-party testing organization, T,C&A Lab can perform coating thickness testing according to ISO, ASTM and other standards. Welcome to contact our experts for consultation.
T,C&A Lab's testing methods include but are not limited to:
Metallographic method
The cross section was detected by metallographic microscope to measure the local thickness of metal coating and oxide film. In general, thickness detection needs to be more than 1μm in order to ensure that the measurement results are within the error range. The greater the thickness, the smaller the error.
Coulomb method
Coulomb method is suitable for measuring the thickness of single-layer and multi-layer metal coatings by anodic dissolution coulometric method. It can not only measure the thickness of the covering layer of flat samples, but also measure the thickness of the covering layer of cylindrical and wire rods. It is especially suitable for measuring the metal of multilayer nickel plating and its potential difference. The types of coatings measured are Au, Ag, Zn, Cu, Ni, Cr.
X-ray method
X-ray method is suitable for measuring the thickness of the metal coating that needs to be analyzed in the electroplating and electronic circuit board industries. Including: gold (Au), silver (Ag), tin (Sn), copper (Cu), nickel (Ni), chromium (Cr) and other metal element thickness. This measurement method can simultaneously measure the three-layer coating system, or simultaneously measure the thickness and composition of the three-layer component.
Magnetic induction method
Magnetic induction method is suitable for measuring non-magnetic coatings over ferrous substrates and magnetic coatings over non-magnetic substrates.
Eddy-current method
Eddy-current method is suitable for measuring non-conductive coatings on non-ferrous conductive substrates, non-ferrous conductive coatings on non-conductive substrates and some non-ferrous metal coatings on non-ferrous metals.
Beta backscatter
Beta backscatter is an advanced non-destructive physical thickness measurement method, which is widely used to measure metal and non-metallic coatings thickness such as gold, silver, lead-tin alloy and so on.
Standards we test to
| ISO 4518 | Metallic Coatings — Measurement of Coating Thickness — Profilometric Method |
| ASTM B487 | Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section |
| ASTM B748 | Standard Test Method for Measurement of Thickness of Metallic Coatings by Measurement of Cross Section with a Scanning Electron Microscope |
In addition, the experts in our Coating Thickness Testing Laboratory also provide a variety of custom testing services as your needs and requirements. Let's discuss the custom service with our experts for free.
Instruments and data
References
- Biligiri S. Coating Thickness measurement challenges using XRF Technology[J]. Metal Finishing, 2007.
- Hernández-Escampa, M.; et al. Electrochemical Evaluation of a Recycled Copolymer Coating for Cultural Heritage Conservation Purposes[J]. International Journal of Ploymer Science,2013,(2013-8-7), 2013, 2013:127-132.
T,C&A Lab's services include, but are not limited to
Note: this service is for Research Use Only and Not intended for clinical use.
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