Effect of Hydrogen on the Internal Oxidation of a Pd–Cr Alloy in Dual-Atmosphere Conditions
Artikel i vetenskaplig tidskrift, 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.

SOFC

Dual atmosphere

Oxygen permeability

Internal oxidation

Chromium

Palladium

Hydrogen

Författare

Anton Chyrkin

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 1

Camilla Cossu

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 1

Jan-Erik Svensson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 1

Jan Froitzheim

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 1

Oxidation of Metals

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

Vol. In Press

Ämneskategorier

Oorganisk kemi

Annan kemiteknik

Korrosionsteknik

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1007/s11085-022-10104-8

Mer information

Senast uppdaterat

2022-04-14