Alumina reduction by laser ablation using a continuous-wave CO2 laser toward lunar resource utilization

Tanaka, Seiya; Yamada, Shin; Soga, Ryota; Komurasaki, Kimiya; Kawashima, Rei; Koizumi, Hiroyuki

doi:10.1016/j.vacuum.2018.07.054

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…The results of characterization by XRD and TEM showed that the resulting product was α-Al2O3 with a particle size of 9.3 nm. While the SEM results show that the sintering treatment affects the sample size and particle shape of the resulting alumina samples, the higher the sintering temperature, the larger the particle size and the more spherical shape [39].…”

Section: Laser Ablation Methodsmentioning

confidence: 96%

Treatment of Waste Water from Li-ion Batteries Cathode Material Production: Selection of adsorbents

Ikhsanudin¹

2023

ESTA

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Pemanfaatan karbon aktif (activated Carbon) sebagai adsorben dalam berbagai aspek penilitian mengalami peningkatan yang sangat pesat dari tahun ke tahun (Nwabanne, et al, 2011). Karbon Aktif sebagai absorben tidak lagi asing bagi kehidupan kita, pemanfaatan karbon aktif dapat kita temukan mulai dari hal yang paling kecil dalam kehidupan rumah tangga, di dunia kesehatan, dan juga di Industri- industri besar baik dalam pemisahan maupun untuk penyimpanan gas. Besarnya kebutuhan terhadap penggunaan karbon aktif sebagai absorben tidak di barengi dengan produksi karbon aktif di negeri ini. Kita masih mengandalkan negara luar sebagai pemasok kebutuhan karbon aktif, sedangkan ketersediaan bahan dasar untuk pembuatan karbon aktif di Indonesia sangat berlimpah dan tidak terjamahkan sama sekali.Karbon aktif dapat didefinisikan sebagai bahan karbon dengan struktur amorf dan luas permukaan internal yang besar dengan tingkat porositas yang tinggi. Karbon aktif memiliki bentuk karbon mikrokristalin dan non-grafit. Bentuk non-grafit berarti terdiri dari sejumlah kecil hidrogen atau sejumlah besar oksigen dalam strukturnya. Karbon aktif memiliki kinerja tinggi dalam konduktivitas listrik, stabilitas termal yang baik, serta reaktivitas permukaan yang menjadi alasan utama karbon aktif digunakan dalam beberapa tahun terakhir.

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Section: Laser Ablation Methodsmentioning

confidence: 96%

Treatment of Waste Water from Li-ion Batteries Cathode Material Production: Selection of adsorbents

Ikhsanudin¹

2023

ESTA

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“…We compared this result with the ablation plume temperature of the alumina solid using a CO 2 laser. 27,28) As a result, the plume temperature with the laser diode was 1000 K higher than that with the CO 2 laser. This is because the laser wavelength significantly influences the amount of laser energy absorbed by the plasma owing to the reverse bremsstrahlung.…”

Section: Estimated Plume Temperaturementioning

confidence: 96%

“…25,26) Following the previous results, Komurasaki et al reported alumina reduction via laser ablation using a continuous-wave (CW) CO 2 laser. [27][28][29] However, the CO 2 laser has complex maintenance because of the inherent gas, low wall-plug efficiency (10%), large size, an invisible beam, and toxic nonclear Zn-Se optics because of the infrared wavelengths. Thus, we attempted alumina reduction via laser ablation using a high-power diode laser.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of ablation plume temperature for laser intensity and alumina powder particle density in alumina reduction

Uesugi¹,

Oishi²,

Matsui³

2021

Jpn. J. Appl. Phys.

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We considered the application of lunar regolith for the construction of a lunar base. To obtain aluminum as building materials, alumina powder reduction was performed using 1-kW-class continuous-wave diode laser ablation. The possibility of reduction, and the temperature dependences of the ablation plume on the laser intensity, ambient pressure, and particle density were investigated, and surface analysis was conducted using SEM and XPS. The laser intensity, ambient pressure, and particle density were set as 0.32–1.3 GW m−2, 10–100 kPa, and 16%–56%, respectively. Alumina reduction was verified by observing the 394- and 396 nm spectra of Al(I). The plume temperature increased with laser intensity in the range of 2700–4500 K. We achieved temperatures of 5200 K and 1000 K higher than with the CO2 laser by powder compression. Spheres that appeared to be aluminum were observed on the irradiated surfaces. However, this could not be proved because of the aluminum oxide layer.

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The enhancement of nonlinear absorption of Ag thin film on laser induced defective MoOx buffer layer

Hong

Liu

et al. 2020

Chemical Physics Letters

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Alumina reduction by laser ablation using a continuous-wave CO2 laser toward lunar resource utilization

Cited by 9 publications

References 12 publications

Treatment of Waste Water from Li-ion Batteries Cathode Material Production: Selection of adsorbents

Treatment of Waste Water from Li-ion Batteries Cathode Material Production: Selection of adsorbents

Evaluation of ablation plume temperature for laser intensity and alumina powder particle density in alumina reduction

The enhancement of nonlinear absorption of Ag thin film on laser induced defective MoOx buffer layer

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