種々のアルミニウムドロスの微細構造
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概要
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Microstructures of various aluminum dross generated from the aluminum scraps of 1000, 5000 and 6000 series alloys that were recovered individually were observed by an optical microscope, an electron probe microanalyzer (EPMA) and a transmission electron microscope (TEM). Various oxides such as MgO, Fe3O4 and SiO2 in addition to metallic Al, AlN and Al2O3 were identified in the dross by X-ray diffraction analysis. Particularly, the formation of MgO and Al2MgO4 were marked in the 5000 and 6000 dross since Mg and Si are main additional elements in 5000 and 6000 aluminum alloys. Comparatively large blocks whose size was several tens mm were mainly composed of aluminum. Some inclusions such as Al6Fe, Al3Fe and α–Al–Fe–Si and a lot of filmy oxides and porosities were formed in the block. In the case of small particles in 1000 dross whose size was below several mm, Al2O3 was formed at the surface and AlN layer was formed in the interior side of Al2O3 layer. In 5000 dross, there was MgO or Al2MgO4 at the outermost layer of the dross powder.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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- Undercooling and solidification behavior of fluid clumps of second-poured melt of hypereutectic Al-Si alloy in Duplex Casting process.
- Change in apparent viscosity of stirred slurry during production of semi-solid hypereutectic Al-Si alloy by slurry-melt mixing process.