Abstract
Lutetium disilicate (Lu2Si2O7) powders were prepared by a molten salt synthesis method. The effects of calcination temperature, reaction time, and surfactants on the properties of powders were investigated. The results revealed that with molten salts Lu2Si2O7 can be formed at 800°C. The particle size and morphology can be controlled by adding surfactants and changing reaction times. The formation mechanism and stability of Lu2Si2O7 structures were also discussed. The developed method for the synthesis of Lu2Si2O7 may pave the way for its application as environmental barrier coating materials.
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