Developing a method for the electron work function determination in the aerospace systems parts by measuring the contact potential difference

Increasing the efficiency in non-destructive testing of the aerospace systems metal parts remains an urgent task. The contact potential difference method is related to the electrical type of non-destructive testing of the machine parts and is a promising option. The paper studies the problem of accuracy in determining the electron work function in the solid metals and alloys using the contact potential difference method. It shows that the existing technique does not allow for an accurate determination of the work function when measuring the contact potential difference in the air. Based on the experimental study results, a formula is obtained that provides a more accurate computation of the work function based on the contact potential difference measured values. The obtained formula forms a basis for creating a technique that is universal and could be applied in scientific research, mechanical engineering and operation of the aerospace systems.
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