Work

Electrochemical Impedance Studies of Hot Corrosion of Preoxidized Ni by a Thin‐Fused Na2 SO 4 Film

Year: 1991

Type: article

Abstract: A thin‐film electrochemical arrangement has been developed to investigate the hot corrosion of preoxidized Ni by a fused film at 1200 K in a catalyzed 0.1% gas mixture. A Pt counterelectrode enables polarization measurements using the three‐electrode configuration as well as open‐circuit potentiometry. To extract mechanistic information without disturbing the system, the electrochemical impedance technique was used. Results of three distinct modes of hot corrosion (passive, pseudo‐passive, and active) resulting from different preoxidation conditions are discussed.

Source: Journal of The Electrochemical Society

DOI: 10.1149/1.2086037

Authors: Yiing Mei Wu, Robert A. Rapp

Institution: The Ohio State University

Language: English

Topic: High-Temperature Coating Behaviors

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, Division of Materials Research

Award: The Chemistry and Electrochemistry of Hot Corrosion of Metals