抄録
We performed to synthesize the calcium-phosphate microsphere with well-controlled particle size by changing the frequency of the ultrasonic transducer. The crystalline phases of the resulting powders were composed of β-tricalcium phosphate (β-TCP) and hydroxyapatite (HAp); the Ca/P molar ratios were about 1.50. The SEM observation indicated that the resulting powders were composed of microspheres with a diameter of ~1 to ~2.5 μm. The particle sizes increased with decreasing ultrasonic frequency, and the distributions were quite narrow. The above results show that the particle size can be easily controlled by changing the frequency of ultrasonic transducer during spray-pyrolysis.
