In addition, the presence of amorphous K-rich phase would increase the surface energy of the particles, and be able to enhance the surface diffusion, therefore lower down the sintering temperature. The influence of the sintering temperature on the sintered density is shown in Fig.4. It can be easily observed that the relative densities of CSAS produced ceramics are much higher than those of CS produced ceramics within all the sintering temperature range. It can reach to 92% R.D. at 1055°C, while only 85% relative density can be achieved for the CS samples. The sintering density experienced a rising trend until the temperature exceeded 1130°C. The drastic volatilization might be the reason for the reduction when the sintering temperature reached to 1145°C[32]. As a result, high relative density over 94% can be achieved for the CSAS samples in a very wide sintering range from 1070°C to 1145°C, while 1130°C is the only sintering temperature point for conventional sintering to obtain the similar value of density. It can conclude that the cold sintering process can effectively lower down the sintering temperature of KNN ceramics and extend the range of feasible sintering temperature.
In addition, the presence of amorphous K-rich phase would increase the surface energy of the particles, and be able to enhance the surface diffusion, therefore lower down the sintering temperature. The influence of the sintering temperature on the sintered density is shown in Fig.4. It can be easily observed that the relative densities of CSAS produced ceramics are much higher than those of CS produced ceramics within all the sintering temperature range. It can reach to 92% R.D. at 1055°C, while only 85% relative density can be achieved for the CS samples. The sintering density experienced a rising trend until the temperature exceeded 1130°C. The drastic volatilization might be the reason for the reduction when the sintering temperature reached to 1145°C[32]. As a result, high relative density over 94% can be achieved for the CSAS samples in a very wide sintering range from 1070°C to 1145°C, while 1130°C is the only sintering temperature point for conventional sintering to obtain the similar value of density. It can conclude that the cold sintering process can effectively lower down the sintering temperature of KNN ceramics and extend the range of feasible sintering temperature.
正在翻译中..
In addition, the presence of amorphous K-rich phase would increase the surface energy of the particles, and be able to enhance the surface diffusion, therefore lower down the sintering temperature. The influence of the sintering temperature on the sintered density is shown in Fig.4. It can be easily observed that the relative densities of CSAS produced ceramics are much higher than those of CS produced ceramics within all the sintering temperature range. It can reach to 92% R.D. at 1055°C, while only 85% relative density can be achieved for the CS samples. The sintering density experienced a rising trend until the temperature exceeded 1130°C. The drastic volatilization might be the reason for the reduction when the sintering temperature reached to 1145°C[32]. As a result, high relative density over 94% can be achieved for the CSAS samples in a very wide sintering range from 1070°C to 1145°C, while 1130°C is the only sintering temperature point for conventional sintering to obtain the similar value of density. It can conclude that the cold sintering process can effectively lower down the sintering temperature of KNN ceramics and extend the range of feasible sintering temperature.
正在翻译中..