EXAFS investigation of low temperature nitrided stainless steel

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Abstract

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.
Original languageEnglish
JournalJournal of Materials Science: Materials in Medicine
Volume43
Issue number15
Pages (from-to)5358-5367
ISSN0957-4530
DOIs
Publication statusPublished - 2008

Cite this

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title = "EXAFS investigation of low temperature nitrided stainless steel",
abstract = "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.",
author = "Jette Oddershede and Thomas Christiansen and Kenny St{\aa}hl and Somers, {Marcel A. J.}",
year = "2008",
doi = "10.1007/s10853-008-2791-y",
language = "English",
volume = "43",
pages = "5358--5367",
journal = "Journal of Materials Science: Materials in Medicine",
issn = "0957-4530",
publisher = "Springer New York",
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}

EXAFS investigation of low temperature nitrided stainless steel. / Oddershede, Jette; Christiansen, Thomas; Ståhl, Kenny; Somers, Marcel A. J.

In: Journal of Materials Science: Materials in Medicine, Vol. 43, No. 15, 2008, p. 5358-5367.

Research output: Contribution to journalJournal articleResearchpeer-review

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

VL - 43

SP - 5358

EP - 5367

JO - Journal of Materials Science: Materials in Medicine

JF - Journal of Materials Science: Materials in Medicine

SN - 0957-4530

IS - 15

ER -