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- W2779078652 abstract "Optimization of the recycling process of Mg alloy scrap chips to obtain superconducting MgB2 via a nano-mixing technology was carried out. In the present process, the an attrition type mechanical milling process without a milling media was used to mix and grind AZ31 scrap chips with commercial B powder. Fine AZ31/B powder mixture can be fabricated via the mechanical milling process in vacuum. The milling process can also reduce the volume of the mixture up to a half of the mixture by the blending in a plastic bottle. An AZ31/boron mixture via the mechanical milling was successfully reacted completely to MgB2 by heating at 700℃ for 3 h in reduced-pressure Ar gas, 50% shorter in reaction time than the mixture by blending in a PE bottle. The powder-in-tube (PIT) technique for producing an MgB2 coil can be conducted by using pulsed electric current sintering (PECS) with the recycled MgB2 powder encapsulated in a stainless steel tube. Dense MgB2 with less MgB4 phase can be obtained by the PIT technique with PECS. The PIT process is also useful to suppress the evaporation of Mg from MgB2 powder during sintering. Any significant reaction between stainless steel and MgB2 was not observed." @default.
- W2779078652 created "2018-01-05" @default.
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- W2779078652 date "2009-01-01" @default.
- W2779078652 modified "2023-09-26" @default.
- W2779078652 title "Recycling of Mg alloy chip scraps by applying a nano-mixing technology" @default.
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- W2779078652 doi "https://doi.org/10.14356/hptf.07124" @default.
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