摘要
以硝酸铁、硝酸锰、硝酸锌为原料,采用传统水热法和球磨辅助水热法合成了锰锌铁氧体纳米粉体,通过xRD、TG-DSC和TEM研究了粉体的结晶性能、热性能以及粉体的形貌,分析了机械球磨的加入对纳米粉体制备的影响。研究表明,球磨的加入可以明显提高晶化反应速度,在相同时间内制得的纳米晶发育好于传统水热法制得的锰锌铁氧体纳米晶。球磨对粉体的热性能影响很小。传统水热法和球磨辅助水热法均可制得粒径10nm左右的锰锌铁氧体纳米晶,但粉体的分散性球磨辅助水热法优于传统水热法。
MnZn ferrites near 10 nm size were successfully prepared by ball milling assistanted hydrothermal at the low temperature of 120 ℃ for 3h. The samples were measured by XRD, TG - DSC and TEM. The experimental results indicate that, compared with conventional hydrothermal, ball milling can accelerate the reaction not only between the solid phases, but also between the solid and liquid phases, more rapid crystals growth can be got from ball milling assistanted. In addition to the acceleration of the reaction, the ball milling produced homogeneous and fine particles with 10 nm size, while the conventional hydrothermal method produced nonhomogeneous and larger particles.
出处
《西南科技大学学报》
CAS
2007年第1期20-24,共5页
Journal of Southwest University of Science and Technology
基金
四川省应用基础研究项目资助(05JY029-071-2)。
关键词
水热法
球磨
锰锌铁氧体
纳米粉体
hydrothermal
ball milling
MnZn ferrites
nanoparticles
