TY - JOUR
T1 - Reflectivity and laser irradiation of plasma sprayed Al coating
AU - Gao, Lihong
AU - Ma, Zhuang
AU - Wang, Fuchi
AU - Li, Wenzhi
N1 - Publisher Copyright:
© 2015 SPIE.
PY - 2015
Y1 - 2015
N2 - It's well known that Al has a very high reflectivity in the visible/near-infrared range, which makes it become a promising anti-laser material. But for a plasma sprayed coating, there are usually many defects, such as pores, cracks and interfaces among particles, which lead to properties difference with its bulk material. In this paper, the reflectivity of plasma sprayed Al coating and its laser irradiation effect were investigated. Its reflectivity, surface roughness, porosity, microstructure, and cross-section microstructure were characterized. The results show that a high reflectivity (98.1% at CO2 laser 10.6μm wavelength) of plasma sprayed Al coating, which is comparable with bulk material, could be obtained. Its optical laser damage threshold is 2×104W/cm2 that makes its reflectivity obviously decrease. Its damage mechanism is oxidation.
AB - It's well known that Al has a very high reflectivity in the visible/near-infrared range, which makes it become a promising anti-laser material. But for a plasma sprayed coating, there are usually many defects, such as pores, cracks and interfaces among particles, which lead to properties difference with its bulk material. In this paper, the reflectivity of plasma sprayed Al coating and its laser irradiation effect were investigated. Its reflectivity, surface roughness, porosity, microstructure, and cross-section microstructure were characterized. The results show that a high reflectivity (98.1% at CO2 laser 10.6μm wavelength) of plasma sprayed Al coating, which is comparable with bulk material, could be obtained. Its optical laser damage threshold is 2×104W/cm2 that makes its reflectivity obviously decrease. Its damage mechanism is oxidation.
KW - Al coating
KW - Laser irradiation
KW - Plasma spray
KW - Reflectivity
UR - http://www.scopus.com/inward/record.url?scp=84937232617&partnerID=8YFLogxK
U2 - 10.1117/12.2181605
DO - 10.1117/12.2181605
M3 - Conference article
AN - SCOPUS:84937232617
SN - 0277-786X
VL - 9543
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
IS - January
M1 - 95430N
T2 - 3rd International Symposium on Laser Interaction with Matter, LIMIS 2014
Y2 - 2 November 2014 through 5 November 2014
ER -
