Titanium Nitride as an Intermetallic Diffusion Barrier for Hydrogen Permeation in Palladium-Vanadium Composite Membranes.

ABSTRACT: Hydrogen purification is a critical industrial process, and there are ongoing efforts to develop low-cost alternatives to palladium foil membranes. Titanium nitride (TiN) is studied as an interdiffusion barrier to enable hydrogen permeation in composite palladium-vanadium membranes. TiN was deposited via reactive sputtering, and films with the desired (200) orientation were obtained in the metallic regime at 400 °C under a 200 V bias to the substrate. The permeability of thin-film TiN was determined with palladium-based sandwich structures. TiN layers up to 10 nm resulted in a minimal decrease in flux (~20%) relative to a freestanding PdCu foil, which was attributed to the interfacial resistance. At greater thicknesses, the TiN layer was rate-limiting, and it was found that the effective p

SUBMITTER: Burst CM 

PROVIDER: S-EPMC11943908 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature