CATEGORIES

    Plating Porosity Tester

    Overview Knowledge Standards Terms
    The coating porosity tester detects tiny pores on the surface of metal coatings through electrochemical or chemical color development methods. The test solution is applied to the coating surface, where it penetrates the pores and reacts with the substrate to produce color spots or changes in current, thereby evaluating the compactness of the coating. It is used for quality control in industries such as electroplating and electronic components.
    Selection
    When selecting, consider the compatibility of the substrate and coating material with the testing method. Electrochemical methods are suitable for quantitative analysis, while the filter paper method is suitable for rapid detection. Verify the instrument's detection accuracy and porosity measurement range, and check the solution compatibility and operational convenience. Refer to industry standards for the applicability of coating thickness and evaluate the equipment maintenance costs.
    type
    Coated Film thickness
    Voltage range

    Terms

    Coating Porosity Tester

    Standards

    Incoming GB/T 21650.1-2026
    Determination of pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption—Part 1: Mercury porosimetry
    Active GB/T 12599-2002
    Metallic coatings--Electroplated coatings of tin--Specification and test methods
    Active GB/T 4909.11-2009
    Test methods for bare wires - Part 11: Test for adherence of coating
    Active GB/T 4909.9-2009
    Test methods for bare wires - Part 9: Test for continuity of coating - Sodium polysulfide solution method
    Active GB/T 33052-2016
    Microporous functional membrane—Measurement for Porosity—Absorption method by cetane

    Articles

    BET surface area analyzer evaluates the pore structure of ion exchange resins
    This article introduces how to use a specific surface area analyzer to evaluate the pore structure of ion exchange resins.
    The Taber Abraser evaluates the wear resistance of coatings.
    The Taber abrasion tester simulates surface wear of materials through rotational friction, used to evaluate the wear resistance of coatings. During testing, a grinding wheel is used to rub the specimen under a fixed load, and performance is quantified by measuring mass loss or thickness changes after a specified number of cycles.
    Application of Coating Thickness Gauges in Electroplating Thickness Detection
    Coating thickness gauges are used to measure the thickness of electroplated layers, primarily employing the electromagnetic induction method for measuring non-magnetic coatings on magnetic substrates, or the eddy current method for measuring insulating coatings on non-magnetic metal substrates.
    Eddy current thickness gauge measures metal coatings on non-conductive substrates.
    The eddy current thickness gauge utilizes the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil to induce eddy currents in the metal coating, thereby measuring thickness based on changes in coil impedance.
    Coulometric Method Coating Thickness Gauge for Non-Destructive Measurement of Precious Metal Coatings
    The coulometric coating thickness gauge measures the thickness by calculating the amount of electricity required to dissolve the precious metal coating through the principle of electrolytic dissolution. This method is non-destructive to the overall sample, only forming tiny electrolytic spots.
    Application of Electrolytic Thickness Tester in Quality Control of Precision Electroplating Layers
    The electrolytic thickness gauge measures coating thickness through the principle of electrochemical dissolution, calculating based on Faraday's law, offering high accuracy and independence from calibration.
    Applicable Scenarios for Neutral Salt Spray and Copper-Accelerated Acetic Acid Salt Spray Tests
    Neutral salt spray testing and copper-accelerated acetic acid salt spray testing are both accelerated methods used to evaluate the corrosion resistance of materials, simulating saline environments to predict long-term performance. The neutral salt spray test uses a neutral sodium chloride solution, which causes relatively mild corrosion and is suitable for general metals and coatings, such as automotive parts.
    Porosity Control in the Preparation of Porous Coatings During the Blade Coating Process
    Doctor blade coating is a wet coating technique widely used for preparing functional coatings, which involves uniformly applying a slurry containing solid particles (such as ceramics, polymers, or metal oxides) onto a substrate, followed by drying and heat treatment to form the coating.
    Selection of Coating Thickness Measurement Methods: Coulometry vs. Dissolution in Electrolytic Thickness Gauges.
    This article compares two techniques in electrolytic thickness gauges: the coulometric method and the dissolution method. The coulometric method measures coating thickness through electrochemical dissolution, making it suitable for single-layer metal coatings with simple operation and high accuracy. The dissolution method, on the other hand, measures thickness via chemical dissolution, making it more appropriate for multilayer or complex coatings.