Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5459784 | Journal of Alloys and Compounds | 2017 | 23 Pages |
Abstract
Strong mechanical forces can appear from gas absorbing solids if a volume expansion occurs during the chemical reaction. In particular for metal hydride reactors, the evolution of mechanical stresses on the reactor wall or internal assemblies over many hydrogen absorption/desorption cycles needs to be considered for reactor safety. In this work, we report on a recently developed in-situ measuring principle that allows the determination of mechanical stresses that originate from a metal hydride formation. For this purpose, a unique lab-scale reactor, equipped with a measuring cell, has been designed and tested with recently developed metal hydride composites (MHC). For spatially confined MHC we found that mechanical stresses were developed two and a half times higher than the hydrogen gas pressure applied for hydride formation.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Felix Heubner, Sebastian Mauermann, Bernd Kieback, Lars Röntzsch,