Static electric field,static magnetic field and microwave field can be used to control the growth and structures of crystals and have been widely used in material industry.The crystallization of calcium sulfate was st...Static electric field,static magnetic field and microwave field can be used to control the growth and structures of crystals and have been widely used in material industry.The crystallization of calcium sulfate was studied under four different experimental conditions:water bath heating,microwave heating,water bath heating with electric field and water bath heating with magnetic field.Through special temperature-control methods,the same temperature rising has been achieved in both microwave heating and traditional water bath.The structures and properties of calcium sulphate crystals were investigated by SEM,while the apearance was investigated by XRD.The analyses show that the structure of calcium sulfate crystal may vary with different physical conditions.However,its structure under microwave heating differs most from others.Meanwhile,the ingredients by microwave heating are appreciably different from those by tradition heating.There is a little semi-hydrated calcium sulfate produced under microwave heating,which can only be obtained at a much higher temperature.These studies provide a reference for controlling and changing the structure and properties of crystals.展开更多
文摘Static electric field,static magnetic field and microwave field can be used to control the growth and structures of crystals and have been widely used in material industry.The crystallization of calcium sulfate was studied under four different experimental conditions:water bath heating,microwave heating,water bath heating with electric field and water bath heating with magnetic field.Through special temperature-control methods,the same temperature rising has been achieved in both microwave heating and traditional water bath.The structures and properties of calcium sulphate crystals were investigated by SEM,while the apearance was investigated by XRD.The analyses show that the structure of calcium sulfate crystal may vary with different physical conditions.However,its structure under microwave heating differs most from others.Meanwhile,the ingredients by microwave heating are appreciably different from those by tradition heating.There is a little semi-hydrated calcium sulfate produced under microwave heating,which can only be obtained at a much higher temperature.These studies provide a reference for controlling and changing the structure and properties of crystals.
