%0 Journal Article
%T Crystal Phases and Chemical Stabilities of YSi<sub>2</sub> Powders Fabricated from Low and High Purity Si and Y Powders
%A Ren Matsushima
%A Mikito Kitayama
%J Journal of Materials Science and Chemical Engineering
%P 18-28
%@ 2327-6053
%D 2022
%I Scientific Research Publishing
%R 10.4236/msce.2022.102002
%X 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 <em>¦Á</em>- and <em>¦Â</em>-YSi<sub>2</sub> 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, <em>¦Â</em>-Y<sub>3</sub>Si<sub>5</sub>, would be the stable phase for this composition, and that the high temperature phase with the orthorhombic structure, <em>¦Â</em>-YSi<sub>2</sub>, would be the meta-stable phase with high oxygen impurity content. It was demonstrated that YSi<sub>2</sub> powders possess much superior chemical stability than Yttrium metal. It was found that the best dispersing solvent was 2-propanol for YSi<sub>2</sub> powder.
%K YSi&lt
%K sub&gt
%K 2&lt
%K /sub&gt
%K Yttrium Silicide
%K Crystal Phase
%K Chemical Stability
%K Oxygen Impurity
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=115456