Corrosion Fatigue of a Nickel-Based Superalloy Disc Rotor with Salt in Air and Sulphur Dioxide Environments
The fatigue performance of a recently developed nickel superalloy disc was investigated at 700 °C in two environments: air and sulphur dioxide (SO<sub>2</sub>). Prior to testing, specimens were coated with various amounts of sodium sulphate (Na<sub>2</sub>SO<sub>4</sub>) and sodium chloride (NaCl) mixed salt (98% Na<sub>2</sub>SO<sub>4</sub> + 2% NaCl), and the influence of both environment and salt loading on corrosion fatigue were assessed. Preliminary results showed that salt exposure in air reduced fatigue strength, with greater damage at higher salt levels. In the SO<sub>2</sub> environment, fatigue strength dropped even more due to low-temperature hot corrosion (LTHC). The details of the corrosion morphology formed in both air and SO<sub>2</sub> environments are discussed.
Authors
- Mark Whittaker (ORCID: https://orcid.org/0000-0002-5854-0726)
- Camille Jackson
- H. Davies (ORCID: https://orcid.org/0000-0003-4838-9572)
- Mark Hardy (ORCID: https://orcid.org/0000-0001-6746-2224)
- Yong Li (ORCID: https://orcid.org/0000-0003-2072-6012)
Institutions
- Swansea University (GB)
- Rolls-Royce (United Kingdom) (GB)
Publication Details
- Journal
- Materials
- Published
- 2025-08-14
- DOI
- https://doi.org/10.3390/ma18163819
- Citations
- 1
- Primary Topic
- Material Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.93
Funders
- Division of Materials Research