TY - JOUR
T1 - Chemical bonding states and solar selective characteristics of unbalanced magnetron sputtered Ti
x
M
1-x-y
N
y
films
AU - Rahman, M. Mahbubur
AU - Jiang, Zhong Tao
AU - Munroe, Paul
AU - Chuah, Lee Siang
AU - Zhou, Zhi Feng
AU - Xie, Zonghan
AU - Yin, Chun Yang
AU - Ibrahim, Khalil
AU - Amri, Amun
AU - Kabir, Humayun
AU - Haque, Md Mahbubul
AU - Mondinos, Nick
AU - Altarawneh, Mohammednoor
AU - Dlugogorski, Bogdan Z.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Transition metal nitride Ti x M 1-x-y N y (M = Al or AlSi) based thin films are evaluated as solar selective surfaces by correlating their spectral selective features with their crystal structure and chemical bonding state including mechanical strength. Ti 0.5 N 0.5 , Ti 0.25 Al 0.25 N 0.5 , and Ti 0.25 Al 0.2 Si 0.05 N 0.5 films were synthesized on AISI M2 steel substrates via closed field unbalanced magnetron sputtering technology. These were investigated using XRD, SEM, XPS, UV-Vis, FTIR and nanoindentation techniques. Analysis of the optical properties showed the solar absorptance, in the visible range, of the Ti x M 1-x-y N y films improved significantly from 51% to 81% with AlSi-doping and an increase of solar absorptance of up to 66% was recorded from films doped with Al. Moreover, the Al doping can reduce the thermal emittance in the infrared range from 6.06% to 5.11%, whereas doping with AlSi reduces the emittance to ca. 3.58%. The highest solar selectivity of 22.63 was achieved with TiAlSiN films. Mechanical studies showed enhanced hardness by ∼32%; enhanced yield strength by ∼16% and enhanced plastic deformation by ∼110% of Al and AlSi doped TiN matrix.
AB - Transition metal nitride Ti x M 1-x-y N y (M = Al or AlSi) based thin films are evaluated as solar selective surfaces by correlating their spectral selective features with their crystal structure and chemical bonding state including mechanical strength. Ti 0.5 N 0.5 , Ti 0.25 Al 0.25 N 0.5 , and Ti 0.25 Al 0.2 Si 0.05 N 0.5 films were synthesized on AISI M2 steel substrates via closed field unbalanced magnetron sputtering technology. These were investigated using XRD, SEM, XPS, UV-Vis, FTIR and nanoindentation techniques. Analysis of the optical properties showed the solar absorptance, in the visible range, of the Ti x M 1-x-y N y films improved significantly from 51% to 81% with AlSi-doping and an increase of solar absorptance of up to 66% was recorded from films doped with Al. Moreover, the Al doping can reduce the thermal emittance in the infrared range from 6.06% to 5.11%, whereas doping with AlSi reduces the emittance to ca. 3.58%. The highest solar selectivity of 22.63 was achieved with TiAlSiN films. Mechanical studies showed enhanced hardness by ∼32%; enhanced yield strength by ∼16% and enhanced plastic deformation by ∼110% of Al and AlSi doped TiN matrix.
UR - http://www.scopus.com/inward/record.url?scp=84968880459&partnerID=8YFLogxK
U2 - 10.1039/c6ra02550a
DO - 10.1039/c6ra02550a
M3 - Article
AN - SCOPUS:84968880459
VL - 6
SP - 36373
EP - 36383
JO - RSC Advances: an international journal to further the chemical sciences
JF - RSC Advances: an international journal to further the chemical sciences
SN - 2046-2069
IS - 43
ER -