TY - JOUR
T1 - EXAFS investigation of low temperature nitrided stainless steel
AU - Oddershede, Jette
AU - Christiansen, Thomas
AU - Ståhl, Kenny
AU - Somers, Marcel A. J.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
U2 - 10.1007/s10853-008-2791-y
DO - 10.1007/s10853-008-2791-y
M3 - Journal article
SN - 0957-4530
VL - 43
SP - 5358
EP - 5367
JO - Journal of Materials Science: Materials in Medicine
JF - Journal of Materials Science: Materials in Medicine
IS - 15
ER -