Corrosion Inhibitor Testing

Corrosion inhibitors refer to those substances that play a protective role on the metal surface, and the addition of a small amount of these chemicals can significantly reduce the corrosion rate of metal materials in the medium to zero. At the same time, it can keep the original physical and mechanical properties of metal materials unchanged. Reasonable use of corrosion inhibitors is an effective way to prevent corrosion of metals and their alloys in environmental media. Especially in the production and processing of petroleum products, chemical cleaning, atmospheric environment, industrial water and petrochemical production, corrosion inhibition technology has become one of the main anti-corrosion methods. T,C&A Lab's corrosion inhibitor testing laboratory can conduct a comprehensive evaluation of corrosion inhibitors, ranging from corrosion rate testing to compatibility testing.

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

• Corrosion rate testing

The test of corrosion inhibitor performance is actually to test the corrosion rate of the metal, that is, to test the corrosion rate of the metal before and after adding the corrosion inhibitor to the corrosive medium under different conditions, and to determine the corrosion efficiency and the best use conditions after comparison. We provide the following methods for corrosion rate testing:

Weight-loss method

The corrosion rate of the metal sample under this condition is determined by weighing the mass loss of the metal sample after re-invading the corrosion medium for a certain period of time, so as to evaluate the corrosion inhibition performance of the corrosion inhibitor. This method is only effective for overall corrosion.

Electrochemical method

The electrochemical method is an indirect method, in which the electrode is polarized by "cathode" and "anode" at first, and the corrosion current density is calculated according to the polarization curve, and then the corrosion rate is converted. We provide the following electrochemical methods for corrosion rate testing:
Potentiodynamic polarization methods
Linear polarization resistance (LPR)
Electrochemical impedance spectroscopy (EIS)
Electrochemical noise (EN)

• Compatibility testing

Compatibility with metallic materials
Compatibility with non-metallic materials
Foam test
Emulsion test
Sticky deposit
Storage stability
Solvent loss
Solubility and solvent compatibility test
Thermal stability test
Oil/water partitioning test
Aging test

Standards we test to

In addition, the experts in our Corrosion Inhibitor 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

References

1. Whitfield, Stephen. Improving Corrosion Inhibition Fluids and Techniques in Offshore Projects. Oil and Gas Facilities 4.03 (2015): 18-23.
2. Yépez, O.; et al. Development of novel phosphate based inhibitors effective for oxygen corrosion. Part I: rotating cage autoclave study. Corrosion/2015, paper 6163 (2015).

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

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