TY - JOUR
T1 - Al 2O 3-nanodiamond composite coatings with high durability and hydrophobicity prepared by aerosol deposition
AU - Lee, Won Hee
AU - Kim, Hyung Jun
AU - Lee, Dong Won
AU - Jeong, Min Goon
AU - Lim, Dae Soon
AU - Nam, Song Min
N1 - Funding Information:
The present research has been conducted using the research grant of Kwangwoon University in 2012.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/6/25
Y1 - 2012/6/25
N2 - We attempted the room-temperature fabrication of Al 2O 3-based nanodiamond (ND) composite coating films on glass substrates by an aerosol deposition (AD) process to improve the anti-scratch and anti-smudge properties of the films. Submicron Al 2O 3 powder capable of fabricating transparent hard coating films was used as a base material for the starting powders, and ND treated by 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) was added to the Al 2O 3 to increase the hydrophobicity and anti-wear properties. The ND powder treated by PFOTES was mixed with the Al 2O 3 powder by ball milling to ratios of 0.01wt.%, 0.03wt.%, and 0.05wt.% ND. The water contact angle (CA) of the Al 2O 3-ND composite coating films was increased as the ND ratio increased, and the maximum water CA among all the films was 110°. In contrast to the water CA, the Al 2O 3-ND composite coating films showed low transmittance values of below 50% at a wavelength of 550nm due to the strong agglomeration of ND. To prevent the agglomeration of ND, the starting powders were mixed by attrition milling. As a result, Al 2O 3-ND composite coating films were produced that showed high transmittance values of close to 80%, even though the starting powder included 1.0wt.% ND. In addition, the Al 2O 3-ND composite coating films had a high water CA of 109° and superior anti-wear properties compared to those of glass substrates.
AB - We attempted the room-temperature fabrication of Al 2O 3-based nanodiamond (ND) composite coating films on glass substrates by an aerosol deposition (AD) process to improve the anti-scratch and anti-smudge properties of the films. Submicron Al 2O 3 powder capable of fabricating transparent hard coating films was used as a base material for the starting powders, and ND treated by 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) was added to the Al 2O 3 to increase the hydrophobicity and anti-wear properties. The ND powder treated by PFOTES was mixed with the Al 2O 3 powder by ball milling to ratios of 0.01wt.%, 0.03wt.%, and 0.05wt.% ND. The water contact angle (CA) of the Al 2O 3-ND composite coating films was increased as the ND ratio increased, and the maximum water CA among all the films was 110°. In contrast to the water CA, the Al 2O 3-ND composite coating films showed low transmittance values of below 50% at a wavelength of 550nm due to the strong agglomeration of ND. To prevent the agglomeration of ND, the starting powders were mixed by attrition milling. As a result, Al 2O 3-ND composite coating films were produced that showed high transmittance values of close to 80%, even though the starting powder included 1.0wt.% ND. In addition, the Al 2O 3-ND composite coating films had a high water CA of 109° and superior anti-wear properties compared to those of glass substrates.
KW - Aerosol deposition
KW - Al O
KW - Durability
KW - Hydrophobicity
KW - Nanodiamond
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U2 - 10.1016/j.surfcoat.2012.05.052
DO - 10.1016/j.surfcoat.2012.05.052
M3 - Article
AN - SCOPUS:84862486923
VL - 206
SP - 4679
EP - 4684
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 22
ER -