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Two different structured boron sources have been used for the fabrication of LaB6 ceramics and their effects on the sintering temperature, microstructure and emission properties were investigated. The results show that the reaction temperature of amorphous boron and La to form LaB6 is 1200 °C, which is 150 °C lower than the reaction using crystalline boron. The grain size of LaB6 prepared by amorphous...
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