@article{ART001831444},
author={Lee Chung-Hyo and 김한웅},
title={Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2013},
volume={23},
number={6},
pages={314-319},
doi={10.6111/JKCGCT.2013.23.6.314}
TY - JOUR
AU - Lee Chung-Hyo
AU - 김한웅
TI - Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2013
VL - 23
IS - 6
PB - The Korea Association Of Crystal Growth, Inc.
SP - 314
EP - 319
SN - 1225-1429
AB - Fabrication of nanocomposite material for the Fe2O3-Al system by mechanical alloying (MA) has been investigated at room temperature. It is found that α-Fe/Al2O3 nanocomposite powders in which Al2O3 is dispersed in α-Fe matrix are obtained by mechanical alloying of Fe2O3 with Al for 5 hours. The change in magnetization and coercivity also reflects the details of the solid state reduction process of hematite by pure metal of Al during mechanical alloying.
Densification of the MA powders was performed in a spark plasma sintering (SPS) machine using graphite dies at 1000oC and 1100oC under 60 MPa. Shrinkage change after SPS of MA'ed sample for 5 hrs was significant above 700oC and gradually increased with increasing temperature up to 1100oC. X-ray diffraction result shows that the average grain size of α-Fe in α-Fe/Al2O3 nanocomposite sintered at 1100oC is in the range of 180 nm. It can be also seen that the coercivity (Hc) of SPS sample sintered at 1000oC is still high value of 88 Oe, suggesting that the grain growth of magnetic α-Fe phase during SPS process tend to be suppressed.
KW - Nanocomposite powder;Mechanical alloying;Magnetization;Coercivity;Spark plasma sintering
DO - 10.6111/JKCGCT.2013.23.6.314
ER -
Lee Chung-Hyo and 김한웅. (2013). Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying. Journal of the Korean Crystal Growth and Crystal Technology, 23(6), 314-319.
Lee Chung-Hyo and 김한웅. 2013, "Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying", Journal of the Korean Crystal Growth and Crystal Technology, vol.23, no.6 pp.314-319. Available from: doi:10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo, 김한웅 "Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying" Journal of the Korean Crystal Growth and Crystal Technology 23.6 pp.314-319 (2013) : 314.
Lee Chung-Hyo, 김한웅. Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying. 2013; 23(6), 314-319. Available from: doi:10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo and 김한웅. "Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying" Journal of the Korean Crystal Growth and Crystal Technology 23, no.6 (2013) : 314-319.doi: 10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo; 김한웅. Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying. Journal of the Korean Crystal Growth and Crystal Technology, 23(6), 314-319. doi: 10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo; 김한웅. Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying. Journal of the Korean Crystal Growth and Crystal Technology. 2013; 23(6) 314-319. doi: 10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo, 김한웅. Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying. 2013; 23(6), 314-319. Available from: doi:10.6111/JKCGCT.2013.23.6.314
Lee Chung-Hyo and 김한웅. "Fabrication and densification of magnetic α-Fe/Al2O3 nanocomposite by mechanical alloying" Journal of the Korean Crystal Growth and Crystal Technology 23, no.6 (2013) : 314-319.doi: 10.6111/JKCGCT.2013.23.6.314
