Exploration of Decimeter-Sized High-Purity Magnesium Single Crystal Preparation Based on Melt Controlled-Speed Drop Casting
Mag nesium has a hexagonal close-packed(hcp)crystal structure,thus its mechanical and physical/chemical properties exhibit significant anisotropy along variant crystallographic orientations.High-purity magnesium single crystal is an ideal material for studying the mechanical prop-erties,corrosion resistance,electrical and thermal conduc-tivity,and other physical/chemical properties of magnesium along different crystallographic orientations.However,high-purity magnesium single crystals often need to be imported,which are expensive,and the purchase procedures are com-plicated and time-consuming.Moreover,the size of magne-sium single crystal produced by current methods is generally with centimeter or even smaller.The present paper proposes a method for growing high-purity magnesium single crystals based on melt controlled-speed drop casting method.The effects such as raw material purity,crucible configuration,and temperature setting on crystal growth are studied.Using the pro-posed method,decimeter-sized high-purity magnesium single crystals with a purity of 99.99wt％are successfully produced.
high-purity magnesiumsingle crystalmelt controlled-speed drop castingcrystal growth
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