Tribocorrosion Tester ASTM G119

Integration of electrochemical cell with tribology and scratch setups for tribocorrosion studies.
tribocorrosion setup on multi function tribometer from Rtec tribometer
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Tribocorrosion Module Information

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    MFT-2000A multi function tribometer
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    Features

    Rtec Tribocorrosion tribometer contains various features to improve testing capabilities.
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    Electrochemical Cell + Tribometer Combination
    The floating ground integrated potentiostat comes with a wide current, voltage, and oscillating frequency range.
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    Tribocorrosion Test Modes
    Study tribocorrosion in several test modes on the same platform.

    • Tribology
    • Scratch Adhesion
    • Hardness
    • Fretting
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    Test Samples
    The unique design allows either upper or lower samples (working electrode).

    Analysis

    Setup

    To investigate synergy of wear and corrosion of steel, the tests were carried out under cathodic and no cathodic protection conditions. We conducted 3 different load conditions (10, 100, 200 N at 2 Hz sliding frequency) at 70°C. The electrochemical polarization tribocorrosion tests were performed with a standard Ag/AgCl reference electrode and a platinum counter electrode.

    OCP – Oper Circuit Potential (Ecorr)

    The plot below shows the open circuit corrosion potential, Ecorr obtained from the integrated potentiostat.

    tribocorrosion tafel plot on tribometer
    Results

    The figure below shows the wear rate difference between the cathodic and non cathodic polarization conditions. The difference of the wear rate shows the synergy of the chemistry used during the test.

    Conclusion

    This corrosion tribology testing showed the importance of tribocorrosion studies. The wear loss rate attributed between mechanical vs mechanical + corrosion test was significantly different.

    tribocorrosion data from Rtec tribometer

    Solution To

    The Tribocorrosion test setup is used extensively across a wide range of industries:
    • Bio-materials
    • Coatings
    • Lubricants
    • Metals
    • Metal Working Industry

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