Nano-sized alpha and beta-TCP powders prepared by high temperature flame spray pyrolysis

作者：Cho Jung Sang; Jung Dae Soo; Han Jin Man; Kang Yun Chan^*

来源：Materials Science and Engineering: C , 2009, 29(4): 1288-1292.

DOI：10.1016/j.msec.2008.10.020

• Tricalcium phosphate
• Flame spray pyrolysis
• Nano powder
• Chemical vapor deposition

Nano-sized alpha-TCP powders with spherical shape and non-aggregation characteristics were directly prepared by high temperature flame spray pyrolysis from the mixed spray solution of water and ethyl alcohol. The alpha-TCP powders prepared from the aqueous spray solution without ethyl alcohol had a bimodal size distribution with nanometer and micron sizes. Nano-sized and monodisperse alpha-TCP powders were prepared when the volume ratio (ethyl alcohol/distilled water, V/V) in the mixed solvent was of 40/60. The mean size of the nano-sized alpha-TCP powders was 32 nm. The composition ratio of calcium and phosphorous components of the nano-sized alpha-TCP powders was 1.49, The mean size of the spherical-like powders post-treated at a temperature of 600 degrees C was 57 nm. The mean size of the powders increased with increasing the post-treatment temperatures. The phase of alpha-TCP powders prepared by flame spray pyrolysis did not change at post-treatment temperatures below 700 degrees C. On the other hand, the powders post-treated at temperatures of 800 and 900 degrees C had single beta phase of TCP.

• 出版日期2009-5-5