TY - JOUR
T1 - Aluminum particle production on alumina rod surface by continuous-wave laser ablation
AU - Tanaka, Seiya
AU - Tanaka, Naoki
AU - Komurasaki, Kimiya
AU - Kawashima, Rei
AU - Koizumi, Hiroyuki
N1 - Funding Information:
This work was supported by Japan EXpert Clone Corporation and Japan Society for the Promotion of Science KAKENHI Grant Number JP20K20542 and JP21J11693. The use of the facilities of the Institute for Solid State Physics of the University of Tokyo is gratefully acknowledged.
Funding Information:
This work was supported by Japan EXpert Clone Corporation and Japan Society for the Promotion of Science KAKENHI Grant Number JP20K20542 and JP21J11693 . The use of the facilities of the Institute for Solid State Physics of the University of Tokyo is gratefully acknowledged.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2/15
Y1 - 2022/2/15
N2 - Continuous-wave laser ablation has been applied to alumina reduction with the eventual goal of lunar resource utilization. Aluminum particles were detected on the alumina rod surface after laser ablation. Impurity precipitation has been proposed as the aluminum particle production mechanism. For this study, distributions of aluminum particles and temperatures after laser ablation on an alumina rod surface were measured using SEM and two-color method. Laser power affected the aluminum particle distribution. The mean aluminum particle radius varied: 0.11–1.7 μm. The minimum value was consistent with the critical radius for aluminum nucleation in heterogeneous nucleation. The time history of surface temperatures was found to be independent of laser power. Therefore, aluminum particle production is expected to change with oxygen deficiency, and to increase with laser power. The obtained condition for aluminum particle production is applicable for an aluminum collection system in the alumina reduction method using laser ablation: the plate temperature of T = 933–2300 K and the cooling rate of 600–800 K/s.
AB - Continuous-wave laser ablation has been applied to alumina reduction with the eventual goal of lunar resource utilization. Aluminum particles were detected on the alumina rod surface after laser ablation. Impurity precipitation has been proposed as the aluminum particle production mechanism. For this study, distributions of aluminum particles and temperatures after laser ablation on an alumina rod surface were measured using SEM and two-color method. Laser power affected the aluminum particle distribution. The mean aluminum particle radius varied: 0.11–1.7 μm. The minimum value was consistent with the critical radius for aluminum nucleation in heterogeneous nucleation. The time history of surface temperatures was found to be independent of laser power. Therefore, aluminum particle production is expected to change with oxygen deficiency, and to increase with laser power. The obtained condition for aluminum particle production is applicable for an aluminum collection system in the alumina reduction method using laser ablation: the plate temperature of T = 933–2300 K and the cooling rate of 600–800 K/s.
KW - Impurity precipitation
KW - Metal
KW - Oxygen deficiency
KW - Scanning electron microscope
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U2 - 10.1016/j.matchemphys.2021.125557
DO - 10.1016/j.matchemphys.2021.125557
M3 - Article
AN - SCOPUS:85121595007
SN - 0254-0584
VL - 278
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
M1 - 125557
ER -