Apparatus and method for nondestructive measurement of hydrogen diffusion coefficient

摘要

A method for measuring the hydrogen diffusion coefficient of a metal structure is provided. The method includes providing a hydrogen-filled surface at a first location on the exterior surface of the structure and a hydrogen oxidation surface at a second location adjacent the first location on the exterior surface of the structure. .. At the filling surface, a hydrogen flux is generated and directed into the metal surface. At least a portion of the hydrogen flux generated by the packing surface and diverted back to that surface is detected and the diverted hydrogen flux transient time is measured. Next, the hydrogen diffusion coefficient of the metal structure is determined based on the measured transition time.