Journal article
EXAFS investigation of low temperature nitrided stainless steel
Metal Structures in Four Dimensions, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Department of Chemistry, Technical University of Denmark3
Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark4
Department of Mechanical Engineering, Technical University of Denmark5
X-ray Crystallography, Department of Chemistry, Technical University of Denmark6
Low temperature nitrided stainless steel AISI 316 flakes were investigated with EXAFS and X-ray diffraction analysis. The stainless steel flakes were transformed into a mixture of nitrogen expanded austenite and nitride phases. Two treatments were carried out yielding different overall nitrogen contents: (1) nitriding in pure NH3 and (2)nitriding in pure NH3 followed by reduction in H2.
The majority of the Cr atoms in the stainless steel after treatment 1 and 2 was associated with a nitrogen–chromium bond distance comparable to that of the chemical compound CrN. The possibility of the occurrence of mixed substitutional– interstitial atom clusters or coherent nitride platelets in nitrogen-expanded austenite is discussed.
| Language: | English |
|---|---|
| Publisher: | Springer US |
| Year: | 2008 |
| Pages: | 5358-5367 |
| ISSN: | 15734803 , 00222461 , 15734838 and 09574530 |
| Types: | Journal article |
| DOI: | 10.1007/s10853-008-2791-y |
| ORCIDs: | Oddershede, Jette , Christiansen, Thomas , Ståhl, Kenny and Somers, Marcel A. J. |
