Magnesium vapor nucleation in phase transitions and condensation under vacuum conditions

作     者：杨成博 田阳 曲涛 杨斌 徐宝强 戴永年 Cheng-bo YANG;Yang TIAN;Tao QU;Bin YANG;Bao-qiang XU;Yong-nian DAI

作者机构：昆明理工大学真空冶金国家工程实验室昆明650093 云南省有色金属真空冶金重点实验室昆明650093 云南省复杂有色金属资源清洁利用国家重点实验室(培育基地)昆明650093 

基　　金：Project(51304095)supported by the National Natural Science Foundation of China Project(S2013FZ029)supported by Science and Technology Planning Project of Yunnan Province 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第2期

页      码：561-569页

摘      要：Recent findings related to coagulable magnesium vapor nucleation and growth in vacuum were assessed critically, with emphasis on understanding these processes at a fundamental molecular level. The effects of magnesium vapor pressure, condensation temperature, and condensation zone temperature gradient on magnesium vapor nucleation in phase transitions and condensation from atomic collision and coacervation with collision under vacuum conditions were discussed. Magnesium powder and magnesium lump condensates were produced under different conditions and characterized by scanning electron microscopy （SEM） and energy-dispersive X-ray spectroscopy （EDS）. The right condensation zone temperature approach to the liquid transition primarily improved the magnesium vapor concentration rate. The gas-solid phase transition was primarily inhibited by setting a small condenser temperature gradient. Under the right condensation temperature and temperature gradients, increasing magnesium vapor partial pressure improved crystallization and reduced the oxidation rate.

主 题 词：magnesium vapor vacuum phase transition condensation nucleation 

学科分类：080603[080603] 08[工学] 0806[工学-电气类] 

核心收录：

D　O　I：10.1016/S1003-6326(14)63096-X

馆 藏 号：203335253...