Effect of Hydrogen on the Internal Oxidation of a Pd–Cr Alloy in Dual-Atmosphere Conditions
Journal article, 2022

The effect of hydrogen on oxygen permeability has been studied in a diluted Pd–Cr alloy in dual- and single- atmosphere conditions between 600 and 950 °C. The 0.3 mm thick Pd–1.5Cr foil was exposed in dry and humid air as well as in dual-atmosphere conditions, with one sample surface being exposed to air and one to hydrogen, as encountered in solid oxide fuel cells. At all temperatures, Cr oxidized internally forming internal oxidation zones which were measured in metallographic cross sections. Below 800 °C, an external layer of PdO formed on the surface decreasing the internal oxidation kinetics. No measurable effect of hydrogen on the internal oxidation of Cr in Pd has been detected.

Oxygen permeability

Chromium

Hydrogen

Palladium

Internal oxidation

Dual atmosphere

SOFC

Author

Anton Chyrkin

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Camilla Cossu

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Jan-Erik Svensson

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Jan Froitzheim

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Oxidation of Metals

0030-770X (ISSN) 1573-4889 (eISSN)

Vol. 97 5-6 527-538

Subject Categories

Inorganic Chemistry

Other Chemical Engineering

Corrosion Engineering

Infrastructure

Chalmers Materials Analysis Laboratory

DOI

10.1007/s11085-022-10104-8

More information

Latest update

3/7/2024 9