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Chromium is an element with excellent corrosion resistance, both in aqueous solutions and in high temperature gaseous environments. Consequently, it is widely used in the form of protective coatings and as an alloying element. Recent metallurgical processing techniques allow the development of semi-finished or finished products with chromium as the main material constituent via the powder metallurgical route.

In the present study of influence of yttrium ion implantation on the high temperature oxidation behaviour at 900 C of powder metallurgical produced chromium was investigated. Comparative studies were made in which the yttrium was added by alloying. Isothermal testing was performed up to 1000 h. The oxide scales formed were analysed by a wide range of analytical techniques, including scanning electron microscopy (SEM), glancing angle X-ray diffraction (XRD) and secondary neutral mass spectroscopy (SNMS). The latter technique was also used for scale analysis after two stage oxidation using oxygen isotope tracers. .

Additional information

Authors: SUNDERKÖTTER J D, JRC Ispra (IT);STROOSNIJDER M F, Institut für Spektrochemie und Angewandte Spektroskopie, Dortmund (DE)
Bibliographic Reference: Paper presented: ECASIA '97, Göteborg (SE), June 16-20, 1997
Availability: Available from (1) as Paper EN 40724 ORA
Record Number: 199710912 / Last updated on: 1997-07-23
Original language: en
Available languages: en