Cathodic hydrogen uptake and permeation in passivated Ni-Nb intermetallic phases (C03)

• Subject Area: Coating and Surface Technology
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 409476157

The aim of project C03 is to analyse the cathodic hydrogen uptake and permeation of passivated Ni-Nb intermetallic phases (e.g. Nb7Ni6) in comparison to Ni. For this purpose, passivation with a focus on growth, faceting and crystallinity of the oxide layer, hydrogen evolution, adsorption and absorption as well as the transport properties of hydrogen through the passive layer and intermetallic phases are investigated, taking into account the formation of defect phases. This is incorporated into a mechanistic surface corrosion model, corrosion mechanism property diagrams and corrosion mechanism maps taking into account hydrogen interaction and passivation.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1394: Structural and Chemical Atomic Complexity: From Defect Phase Diagrams to Material Properties
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Head: Professorin Dr.-Ing. Daniela Zander