The Platinum Development Initiative: Platinum-Based Alloys for High Temperature and Special Applications: Part IV
Under the Platinum Development Initiative, platinum-based alloys were being developed for high-temperature and special applications for good corrosion and oxidation resistance. Parts I‐III of the present series of papers dealt with the development of the ternary and quaternary
Pt alloys (1‐3). In this final paper (Part IV), the corrosion behaviour of selected Pt alloys treated with sodium sulfate salt was compared with that of coated and uncoated CMSX-4
®
nickel-based superalloy (NBSA). Scanning electron microscopy (SEM) results showed
that protective alumina scales of different integrities formed on the Pt alloys, whereas the NBSAs failed rapidly even with an additional Ptaluminide protective coating. Although there were pits on the Pt alloys, they were minor and not visible to the unaided eye. The potential for application
of these Pt alloys in the aerospace gas turbine industry was assessed based on their hot corrosion performance.
Document Type: Research Article
Publication date: 01 April 2010
Johnson Matthey's journal of research on the platinum group metals and developments in their application in industry from 1957-2014. It has now been renamed the Johnson Matthey Technology Review
- Editorial Board
- Information for Authors
- Terms & Conditions
- Disclaimer and Copyright Notice
- Ingenta Connect is not responsible for the content or availability of external websites
Receive new issue alert- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content