TY - GEN
T1 - The feasibility study of GaN coatings by cold spray technique
AU - Zhou, Shaoyun
AU - Bernard, Chrystelle A.
AU - Ravi, Kesavan
AU - Ichikawa, Yuji
AU - Ogawa, Kazuhiro
N1 - Funding Information:
This work was partly supported by JSPS KAKENHI Grant-in-Aid for Scientific Research (A) 17H01235.
Publisher Copyright:
Copyright © 2019 ASM International® All rights reserved.
PY - 2019
Y1 - 2019
N2 - Gallium nitride (GaN) is a ceramic material used for its excellent photocatalytic properties. In order to retain the more photocatalytic activity of GaN and decrease the cost of the manufactured structure, the cold spray (CS) process appears to be a promising alternative technique. In this study, the feasibility of formation of GaN coatings on stainless steel (SUS304), aluminum alloy 1070 (A1070) and ITO glass was investigated by a downstream injection low pressure cold-spray system. Further, optical microscopy, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray Diffraction (XRD) were used to characterize the coated surfaces. The deposition of GaN particles on all three substrates were observed to be due to a pseudo deformation of the super agglomerated GaN particles. The deposition results showed a saturation limit to the coating thickness with the number of repeated passes. Besides, the XRD spectra of the coating and the powder indicated that no phase transformation took place during the spray process.
AB - Gallium nitride (GaN) is a ceramic material used for its excellent photocatalytic properties. In order to retain the more photocatalytic activity of GaN and decrease the cost of the manufactured structure, the cold spray (CS) process appears to be a promising alternative technique. In this study, the feasibility of formation of GaN coatings on stainless steel (SUS304), aluminum alloy 1070 (A1070) and ITO glass was investigated by a downstream injection low pressure cold-spray system. Further, optical microscopy, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray Diffraction (XRD) were used to characterize the coated surfaces. The deposition of GaN particles on all three substrates were observed to be due to a pseudo deformation of the super agglomerated GaN particles. The deposition results showed a saturation limit to the coating thickness with the number of repeated passes. Besides, the XRD spectra of the coating and the powder indicated that no phase transformation took place during the spray process.
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M3 - Conference contribution
AN - SCOPUS:85073875374
T3 - Proceedings of the International Thermal Spray Conference
SP - 462
EP - 468
BT - International Thermal Spray Conference and Exposition, ITSC 2019
A2 - Azarmi, F.
A2 - Lau, Y.
A2 - Veilleux, J.
A2 - Widener, C.
A2 - Toma, F.
A2 - Koivuluoto, H.
A2 - Balani, K.
A2 - Li, H.
A2 - Shinoda, K.
PB - ASM International
T2 - International Thermal Spray Conference and Exposition: New Waves of Thermal Spray Technology for Sustainable Growth, ITSC 2019
Y2 - 26 May 2019 through 29 May 2019
ER -