Develop Testing Methods for Evaluating Hydrogen Embrittlement Mitigation Approaches Based on Thermal Desorption Mass Spectrometry (TDMS)

Abstract Emerging hydrogen embrittlement (HE) mitigation approaches such as gaseous and liquid HE inhibitors and barrier coatings are expected to protect the hydrogen energy equipment from HE damages, which is a primary cause of failure in metallic materials exposed to hydrogen-containing environments. A review was conducted on the latest standards and published articles, to analyze the gaps of the testing methods for evaluating HE susceptibility in steel materials. Those methods are destructive and based on the change in mechanical properties after exposure to hydrogen conditions. A novel testing method developed based on thermal desorption mass spectrometry (TDMS) and proof ring can test the HE susceptibility of metallic material under static tensile load. The method should be able to evaluate the performance of novel HE inhibition coatings, but more works should be carried out to optimize the testing parameters.

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