Interaction of hydrogen with material

The research group of prof. Verbeken has gained a lot of international recognition on its expertise around the hydrogen topic. Specialized equipment is at the disposal for which reliable and consistent methodologies are developed to investigate the interaction between hydrogen and metals.

The available characterization techniques to investigate hydrogen related phenomena are:

  • Hot/melt extraction determines the amount of diffusible (300°C) and total (1600°C) hydrogen inside the material.
  • Thermal Desorption Spectroscopy (TDS) evaluates the available hydrogen trapping sites and calculates the activation energy linked to microstructural features of the material.
  • Permeation experiments determine the hydrogen diffusion coefficient inside the material (with or without an applied stress).
  • (In-situ) tensile tests allow to investigate the hydrogen induced mechanical degradation. By comparing tensile tests in air and in a hydrogen rich environment (in-situ), the degree of hydrogen embrittlement can be defined.

The hydrogen induced damage inside the microstructure can also be investigated in detail by using the more traditional characterization techniques (e.g. microscopy, EBSD...) on hydrogen charged samples.