| 摘要 |
PROBLEM TO BE SOLVED: To provide a strontium material and a barium material that are unlikely to be solidified.SOLUTION: A glass material is prepared by adding silica particles having hydrophobic groups on their surfaces to strontium compound particles or barium compound particles. The hydrophobic groups are alkyl groups. The silica particles are added in an amount ranging from 0.1 to 10 mass%, and have an average particle diameter (D50) of 100 μm or less. The strontium compound particles or barium compound particles have a form of chloride or nitrate. The silica particles having hydrophobic groups on their surfaces are added to the strontium compound particles or barium compound particles, which constitute the glass material, and this addition can suitably suppress the solidification of the strontium compound particles or barium compound particles. |
