Tribocorrosion Tester ASTM G119

Integration of electrochemical cell with tribology and scratch setups for tribocorrosion studies.

tribo corrosion data from Rtec tribometer
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Tribocorrosion Module Information

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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.

tribo corrosion 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.

tribo corrosion 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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