面心立方相Ti纳米粒子的形成及相变

作     者：杨明川 徐坚 孙秀魁 魏文铎 胡壮麒 YANG MING-CHUAN XU JIAN SUN XUI-KUI WEI WEN-DUO HU ZHUANG-QI(Stale Key Laboratory of Rapidly Solidtfied Non-equilibrium Alloys, Institute of Metal Research, Acadrmta Sinica. Shenyang 110015)

作者机构：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 版 物：《物理学报》 (Acta Physica Sinica)

年 卷 期：1995年第44卷第12期

页      面：1958-1963页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：钛 纳米粒子 面心立方相 相变 

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.