Galvanic Corrosion Testing

Galvanic corrosion, also known as contact corrosion, is electrochemical corrosion caused by two different metals in contact with each other while being in the electrolyte. Since they constitute a spontaneous battery, it is the more active and anode metal that is corroded. For example, aluminum alloys and titanium alloys are widely used as structural materials for aircraft and ships because of their low density, high specific strength, and high specific rigidity. In the actual application process, many aluminum/titanium alloy heterogeneous metal contact structures are formed. Among these structural parts, the aluminum alloy in contact with the titanium alloy has a more negative electrode potential that causes serious galvanic corrosion at the contact interface, which brings safety hazards to the normal driving of the equipment. T,C&A Lab provides you with professional galvanic corrosion testing services according to ISO, ASTM, etc. industry standards. We can provide you with the necessary data on how your materials and components are likely to perform when deployed in the field, to ensure they are always of a high quality and are safe, compliant and ultimately fit for purpose.

The test services we provide include but are not limited to:

• Sensitive galvanic current measurement using Zero Resistance Ammetry (ZRA)

• Galvanic series determination

• Preferential weld corrosion

• Polarization curve analysis

• Sensitivity assessment

Standards we test to

In addition, the experts in our Galvanic Corrosion Testing Laboratory also provide a variety of custom tests as you need. Let's discuss the customized service with our experts for free.

Instruments and data

Reference

1. Groshek, I. G.; et al. Hebdon M H . Galvanic Corrosion of ASTM A1010 Steel Connected to Common Bridge Steels[J]. Journal of Materials in Civil Engineering, 2020, 32(8):04020193.

Note: this service is for Research Use Only and Not intended for clinical use.

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