面心立方相Ti纳米粒子的形成及相变  

FORMATION AND EVOLUTION OF FCC PHASE IN TITANIUM NANOPARTICLES

作　　者：杨明川[1] 徐坚[1] 孙秀魁[1] 魏文铎[1] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所快速凝固非平衡合金国家重点实验室,沈阳110015

出　　处：《物理学报》1995年第12期1958-1963,共6页Acta Physica Sinica

摘　　要：Titanium nanoparticles were synthesized by gas condensation method, where the particles with different average diameters were obtained by varying the gas pressure in the atmosphere of argon and helium, respectively. The structure, morphology and composition of the particles were analyzed using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photon spectroscopy (XPS) and Auger electron spectroscopy (AES). The results showed that the prepared particles were 5-27nm in diameters and that the titanium nanoparticle was evoluted from normal hexagonal close-packed (hcp) structure to an abnormal facecentred cubic (fcc) stru-cture with the particle diameter decreasing. The formation mechanism of abnormal structure was discussed as well.Titanium nanoparticles were synthesized by gas condensation method, where the particles with different average diameters were obtained by varying the gas pressure in the atmosphere of argon and helium, respectively. The structure, morphology and composition of the particles were analyzed using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photon spectroscopy (XPS) and Auger electron spectroscopy (AES). The results showed that the prepared particles were 5-27nm in diameters and that the titanium nanoparticle was evoluted from normal hexagonal close-packed (hcp) structure to an abnormal facecentred cubic (fcc) stru-cture with the particle diameter decreasing. The formation mechanism of abnormal structure was discussed as well.

关 键 词：钛 纳米粒子 面心立方相 相变 

分 类 号：TG146.23[一般工业技术—材料科学与工程]