Review of Hydrogen Induced Disbond Testing


Clad materials are regularly used in corrosive, high temperature, high pressure process environments. When high partial pressures of hydrogen are also present the stakes are raised considerably. Clad disbonding becomes a valid concern when hydrogen charging conditions in combination with subsequent operations cause rapid cooling. The ability of clad material to resist disbonding is a key consideration when selecting appropriate materials of construction for critical process equipment. This paper reviews multi-year sampling test data of hydrogen induced disbonding comparing the three primary cladding techniques for these purposes. To build a foundation for the discussion, a brief examination of the American Society of Testing and Material (ASTM) G146-01 standard practice, is presented. The results will provide equipment designers and materials selection experts guidance on which cladding techniques are appropriate for the materials of construction in high stakes environments.