Reduction of surface oxide films in Al-Mg alloy powders by pulse electric current sintering

Guoqiang Xie; Osamu Ohashi; Norio Yamaguchi; Minghui Song; Kazutaka Mitsuishi; Kazuo Furuya; Tetsuji Noda

doi:10.1557/jmr.2004.0105

Reduction of surface oxide films in Al-Mg alloy powders by pulse electric current sintering

Guoqiang Xie^*
, Osamu Ohashi
, Norio Yamaguchi
, Minghui Song
, Kazutaka Mitsuishi
, Kazuo Furuya
, Tetsuji Noda

^*Corresponding author for this work

Niigata University
National Institute for Materials Science Tsukuba

Research output: Contribution to journal › Article › peer-review

Abstract

The reduction mechanism of particle surface oxide films on Al-Mg alloy specimens sintered by the pulse electric current sintering (PECS) process was investigated via transmission electron microscopy, energy dispersive x-ray spectroscopy, and thermodynamic calculation. The reduction products were either MgAl₂O₄ or MgO or both, which is dependent on the sintering temperature and Mg content in Al-Mg alloy. Comparing the experimental temperature of the reduction products with that from thermodynamic calculation, it was suggested that the temperature at interfaces between particles was higher than that inside particles. This difference of temperature enhanced reduction of surface oxide films of Al-Mg alloy powders and hence accelerated the sintering in the PECS process.

Original language	English
Pages (from-to)	815-819
Number of pages	5
Journal	Journal of Materials Research
Volume	19
Issue number	3
DOIs	https://doi.org/10.1557/jmr.2004.0105
State	Published - Mar 2004
Externally published	Yes

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title = "Reduction of surface oxide films in Al-Mg alloy powders by pulse electric current sintering",

abstract = "The reduction mechanism of particle surface oxide films on Al-Mg alloy specimens sintered by the pulse electric current sintering (PECS) process was investigated via transmission electron microscopy, energy dispersive x-ray spectroscopy, and thermodynamic calculation. The reduction products were either MgAl2O4 or MgO or both, which is dependent on the sintering temperature and Mg content in Al-Mg alloy. Comparing the experimental temperature of the reduction products with that from thermodynamic calculation, it was suggested that the temperature at interfaces between particles was higher than that inside particles. This difference of temperature enhanced reduction of surface oxide films of Al-Mg alloy powders and hence accelerated the sintering in the PECS process.",

author = "Guoqiang Xie and Osamu Ohashi and Norio Yamaguchi and Minghui Song and Kazutaka Mitsuishi and Kazuo Furuya and Tetsuji Noda",

year = "2004",

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doi = "10.1557/jmr.2004.0105",

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volume = "19",

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journal = "Journal of Materials Research",

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T1 - Reduction of surface oxide films in Al-Mg alloy powders by pulse electric current sintering

AU - Xie, Guoqiang

AU - Ohashi, Osamu

AU - Yamaguchi, Norio

AU - Song, Minghui

AU - Mitsuishi, Kazutaka

AU - Furuya, Kazuo

AU - Noda, Tetsuji

PY - 2004/3

Y1 - 2004/3

N2 - The reduction mechanism of particle surface oxide films on Al-Mg alloy specimens sintered by the pulse electric current sintering (PECS) process was investigated via transmission electron microscopy, energy dispersive x-ray spectroscopy, and thermodynamic calculation. The reduction products were either MgAl2O4 or MgO or both, which is dependent on the sintering temperature and Mg content in Al-Mg alloy. Comparing the experimental temperature of the reduction products with that from thermodynamic calculation, it was suggested that the temperature at interfaces between particles was higher than that inside particles. This difference of temperature enhanced reduction of surface oxide films of Al-Mg alloy powders and hence accelerated the sintering in the PECS process.

AB - The reduction mechanism of particle surface oxide films on Al-Mg alloy specimens sintered by the pulse electric current sintering (PECS) process was investigated via transmission electron microscopy, energy dispersive x-ray spectroscopy, and thermodynamic calculation. The reduction products were either MgAl2O4 or MgO or both, which is dependent on the sintering temperature and Mg content in Al-Mg alloy. Comparing the experimental temperature of the reduction products with that from thermodynamic calculation, it was suggested that the temperature at interfaces between particles was higher than that inside particles. This difference of temperature enhanced reduction of surface oxide films of Al-Mg alloy powders and hence accelerated the sintering in the PECS process.

UR - https://www.scopus.com/pages/publications/85214051139

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DO - 10.1557/jmr.2004.0105

M3 - 文章

AN - SCOPUS:85214051139

SN - 0884-2914

VL - 19

SP - 815

EP - 819

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 3

ER -

Reduction of surface oxide films in Al-Mg alloy powders by pulse electric current sintering

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