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https://doi.org/10.3139/146.110003

has been cited by the following article:

• TITLE: Crystal Phases and Chemical Stabilities of YSi2 Powders Fabricated from Low and High Purity Si and Y Powders

  AUTHORS: Ren Matsushima, Mikito Kitayama

  KEYWORDS: YSi2, Yttrium Silicide, Crystal Phase, Chemical Stability, Oxygen Impurity

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.10 No.2, February 25, 2022

  ABSTRACT: Y-Si compounds with the composition of Y:Si = 1:2 were fabricated using Yttrium and Silicon raw powders with low and high purity in various atmospheres and temperatures. Although the latest Y-Si phase diagram shows that the α- and β-YSi2 phases are the stable phases for the stoichiometric composition of Y:Si = 1:2, the current experimental results suggest that the high temperature phase with the hexagonal structure, β-Y3Si5, would be the stable phase for this composition, and that the high temperature phase with the orthorhombic structure, β-YSi2, would be the meta-stable phase with high oxygen impurity content. It was demonstrated that YSi2 powders possess much superior chemical stability than Yttrium metal. It was found that the best dispersing solvent was 2-propanol for YSi2 powder.