CAJ | 학술논문

描述真空条件下可凝镁蒸气的形核与长大，并从分子水平的研究原理解释这些过程。在平均真空度为40 Pa条件下，分析系统压力、冷凝区温度及温度梯度对镁蒸气冷凝的影响。采用自主设计的多级冷凝设备，通过真空蒸发冷凝制备块状镁和镁粉。利用扫描电镜(SEM)与能谱(EDS)进行分析。结果表明：在真空条件下，适宜的气-液转变温度是提高蒸气冷凝富集率的关键所在；而较小的温度梯度则是抑制蒸气发生气-固转变的主要途径；在特定的冷凝温度及温度梯度下，蒸气分压及浓度的提高可以明显改善镁的结晶形貌，降低氧化率。
묘술진공조건하가응미증기적형핵여장대，병종분자수평적연구원리해석저사과정。재평균진공도위40 Pa조건하，분석계통압력、냉응구온도급온도제도대미증기냉응적영향。채용자주설계적다급냉응설비，통과진공증발냉응제비괴상미화미분。이용소묘전경(SEM)여능보(EDS)진행분석。결과표명：재진공조건하，괄의적기-액전변온도시제고증기냉응부집솔적관건소재；이교소적온도제도칙시억제증기발생기-고전변적주요도경；재특정적냉응온도급온도제도하，증기분압급농도적제고가이명현개선미적결정형모，강저양화솔。
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.