Chromium Hydride Research Articles

The Fracture of Brittle Chromium by Acid Etching

A mechanism is presented to explain the formation of transcrystalline cleavage cracks during the etching of brittle annealed chromium. The mechanism proposed is the formation of a face‐centered‐cubic chromium hydride on the surface which, due to its larger volume, initiates cracks in the brittle material beneath. These cracks may then propagate by a stress corrosion mechanism. Room temperature ductile material appears to be capable of taking up this volume expansion without cracks being initiated. X‐ray data confirm the existence of the face‐centered‐cubic hydride.

Unit Cell Dimension of Face-centered Cubic Chromium Hydride and Space Groups of Two Chromium Hydrides

Unit Cell Dimension of Face-centered Cubic Chromium Hydride and Space Groups of Two Chromium Hydrides