TY - JOUR
T1 - NEXAFS N K-edge study of the bonding structure on Al/Si doped sputtered CrN coatings
AU - Rahman, M. Mahbubur
AU - Jiang, Zhong-Tao
AU - Duan, Xiaofei
AU - Xie, Zonghan
AU - Tadich, Anton
AU - Zhou, Zhi-Feng
AU - Mondinos, Nicholas
AU - Yin, Chun-Yang
AU - Altarawneh, Mohammednoor
AU - Dlugogorski, Bogdan Z.
PY - 2016/3/15
Y1 - 2016/3/15
N2 - Chromium nitride (CrN)-based materials display broad applications as protective coatings for automotive, power generation and aerospace industries, in which surfaces are often subjected to wear and corrosion. By using an appropriate choice of dopant, one can further increase the mechanical hardness, corrosion and oxidation resistance of these coatings. In order to identify the effect of dopants on the structural evolution and surface electronic properties of CrN coatings, Cr1-z(Al/Si)zN coatings were prepared by magnetron sputtering and then characterized via X-ray diffraction (XRD) and soft X-ray synchrotron radiation Near-edge X-ray Absorption Fine Structure (NEXAFS) studies around N K-edge. Higher degree of crystallinity of the coatings were identified through XRD studies. The bonding structure, of the doped CrN coating, was analyzed by Near-edge X-ray Absorption Fine Structure (NEXAFS) measurements performed around the N K-edge (390-450 eV) in the Auger electron yield (AEY) and total fluorescence yield (TFY) modes. NEXAFS analysis revealed Cr3d(Al3p/Si3p)N2p hybridizations in Cr1-z(Al/Si)zN compositions and complex structure splitting via spin-orbit interaction of the Cr3d levels.
AB - Chromium nitride (CrN)-based materials display broad applications as protective coatings for automotive, power generation and aerospace industries, in which surfaces are often subjected to wear and corrosion. By using an appropriate choice of dopant, one can further increase the mechanical hardness, corrosion and oxidation resistance of these coatings. In order to identify the effect of dopants on the structural evolution and surface electronic properties of CrN coatings, Cr1-z(Al/Si)zN coatings were prepared by magnetron sputtering and then characterized via X-ray diffraction (XRD) and soft X-ray synchrotron radiation Near-edge X-ray Absorption Fine Structure (NEXAFS) studies around N K-edge. Higher degree of crystallinity of the coatings were identified through XRD studies. The bonding structure, of the doped CrN coating, was analyzed by Near-edge X-ray Absorption Fine Structure (NEXAFS) measurements performed around the N K-edge (390-450 eV) in the Auger electron yield (AEY) and total fluorescence yield (TFY) modes. NEXAFS analysis revealed Cr3d(Al3p/Si3p)N2p hybridizations in Cr1-z(Al/Si)zN compositions and complex structure splitting via spin-orbit interaction of the Cr3d levels.
KW - CrNx coatings
KW - Doping
KW - Electronic structure
KW - Grain boundary
KW - NEXAFS
KW - Sputtering
KW - Synchrotron radiation
UR - http://www.scopus.com/inward/record.url?scp=84949599636&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84949599636&origin=recordpage
U2 - 10.1016/j.jallcom.2015.11.128
DO - 10.1016/j.jallcom.2015.11.128
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 661
SP - 268
EP - 273
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -