Authors:
Natasha Sweeney Fort (1), Richard Thackray (1), Hugh Hamilton (2), Gill Thornton (3), Martha Briceno de Gutierrez (2), Xinjiang Hao (3), Andy Fones (2)
1- University of Sheffield, England
2- Johnson Matthey, England
3- Liberty Powder Metals, England
Abstract:
Stainless steels’ ability to resist corrosion is improved via cathodic modification. This is achieved through bulk or surface alloying with platinum group metals. However, this approach to the enhancement of stainless steels has yet to find commercial success due to its high costs and the propensity for platinum group metal coatings to debond. This project aims to make cathodic modification more economical by incorporating platinum group metals into stainless steels by powder metallurgical routes. In this study, Ru and Pd doped 316L and 17-4PH stainless steel powders were sintered using field assisted sintering (FAST). Near-full density was attained and elemental segregation was not observed in the sintered samples. This new approach shows potential for reducing the volume of precious metals used in cathodic modification while improving long-term corrosion performance.
DOI:
https://doi.org/10.59499/EP235765422