Fabrication of a lotus-type porous Al-Si alloy by continuous casting with a thermal decomposition method

T. B. Kim, Shinsuke Suzuki, H. Nakajima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Lotus-type porous A1-14 wt.%Si alloy was fabricated by continuous casting at a transference velocity of 10 mmmin-1 in vacuum and by adding Ca(OH)2 pellets to the crucible. The porosity and the pore diameter increased by varying the amount of Ca(OH)2 from 0.2 g to 0.6 g. In the case of 0.6 g Ca(OH)2, the average porosity was about 30 % and the average pore diameter was about 3.8 mm. XRD patterns of the pellets after continuous casting showed the Ca(OH)2 pellet did not decompose completely during continuous casting. The TG-DTA analysis showed that the Ca(OH)2 pellet decomposes more slowly than Ca(OH)2 powder. These results suggest that the Ca(OH)2 pellets gradually decomposed in the crucible during the continuous casting, which is suitable for the supply of hydrogen over extended periods.

Original languageEnglish
Article number012067
JournalJournal of Physics: Conference Series
Volume165
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

pellets
thermal decomposition
fabrication
porosity
crucibles
thermal analysis
vacuum
hydrogen

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Fabrication of a lotus-type porous Al-Si alloy by continuous casting with a thermal decomposition method. / Kim, T. B.; Suzuki, Shinsuke; Nakajima, H.

In: Journal of Physics: Conference Series, Vol. 165, 012067, 2009.

Research output: Contribution to journalArticle

@article{94f91805e57f4b45896bf7ba2052056b,
title = "Fabrication of a lotus-type porous Al-Si alloy by continuous casting with a thermal decomposition method",
abstract = "Lotus-type porous A1-14 wt.{\%}Si alloy was fabricated by continuous casting at a transference velocity of 10 mmmin-1 in vacuum and by adding Ca(OH)2 pellets to the crucible. The porosity and the pore diameter increased by varying the amount of Ca(OH)2 from 0.2 g to 0.6 g. In the case of 0.6 g Ca(OH)2, the average porosity was about 30 {\%} and the average pore diameter was about 3.8 mm. XRD patterns of the pellets after continuous casting showed the Ca(OH)2 pellet did not decompose completely during continuous casting. The TG-DTA analysis showed that the Ca(OH)2 pellet decomposes more slowly than Ca(OH)2 powder. These results suggest that the Ca(OH)2 pellets gradually decomposed in the crucible during the continuous casting, which is suitable for the supply of hydrogen over extended periods.",
author = "Kim, {T. B.} and Shinsuke Suzuki and H. Nakajima",
year = "2009",
doi = "10.1088/1742-6596/165/1/012067",
language = "English",
volume = "165",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Fabrication of a lotus-type porous Al-Si alloy by continuous casting with a thermal decomposition method

AU - Kim, T. B.

AU - Suzuki, Shinsuke

AU - Nakajima, H.

PY - 2009

Y1 - 2009

N2 - Lotus-type porous A1-14 wt.%Si alloy was fabricated by continuous casting at a transference velocity of 10 mmmin-1 in vacuum and by adding Ca(OH)2 pellets to the crucible. The porosity and the pore diameter increased by varying the amount of Ca(OH)2 from 0.2 g to 0.6 g. In the case of 0.6 g Ca(OH)2, the average porosity was about 30 % and the average pore diameter was about 3.8 mm. XRD patterns of the pellets after continuous casting showed the Ca(OH)2 pellet did not decompose completely during continuous casting. The TG-DTA analysis showed that the Ca(OH)2 pellet decomposes more slowly than Ca(OH)2 powder. These results suggest that the Ca(OH)2 pellets gradually decomposed in the crucible during the continuous casting, which is suitable for the supply of hydrogen over extended periods.

AB - Lotus-type porous A1-14 wt.%Si alloy was fabricated by continuous casting at a transference velocity of 10 mmmin-1 in vacuum and by adding Ca(OH)2 pellets to the crucible. The porosity and the pore diameter increased by varying the amount of Ca(OH)2 from 0.2 g to 0.6 g. In the case of 0.6 g Ca(OH)2, the average porosity was about 30 % and the average pore diameter was about 3.8 mm. XRD patterns of the pellets after continuous casting showed the Ca(OH)2 pellet did not decompose completely during continuous casting. The TG-DTA analysis showed that the Ca(OH)2 pellet decomposes more slowly than Ca(OH)2 powder. These results suggest that the Ca(OH)2 pellets gradually decomposed in the crucible during the continuous casting, which is suitable for the supply of hydrogen over extended periods.

UR - http://www.scopus.com/inward/record.url?scp=67651006087&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67651006087&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/165/1/012067

DO - 10.1088/1742-6596/165/1/012067

M3 - Article

VL - 165

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

M1 - 012067

ER -