The main influencing factors for containerless processing, such as the gas medium, gravitational levels, resonance adjustment, and temperature variations are studied 对材料声悬浮无容器处理过程中的主要影响因素如气体媒质、重力水平、声场调谐以及温度变化等进行了研究。
The containerless rapid solidification of al-32.7wt % cu eutectic alloy in drop tube is investigated . the " lamellar eutectic-anomalous eutectic " microstructural morphology transition occurs with the decrease of droplet size 采用落管无容器处理技术研究了al-32.7wtcu二元共晶合金在深过冷条件下的快速凝固规律。
containerless processing is a promising way to study rapid solidification . it can efficiently eliminates heterogeneous nucleation induced by container wall so that large undercoolings can be achieved prior to solidification 同时,采用落管无容器处理技术,研究了al-32.7wtcu二元共晶合金的深过冷及快速凝固行为。
The advantage of al is its applicability to non-conducting substances and also to low-melting-point metallic materials . due to the fact that the levitation capability of single-axis acoustic levitation ( saal ) is comparatively weak and its applications are mainly limited to low-density substances, this paper aims at enhancing the levitation capability of saal and realizing the containerless solidification of those materials with low melting temperature and high density 本文针对当前单轴式声悬浮能力较弱,而且主要应用于低密度材料无容器处理的研究现状,以提高声悬浮能力、实现低熔点高密度材料的声悬浮无容器凝固为主线,采用理论和实验相结合的方法,对单轴式声悬浮过程及其主要影响因素进行了较为系统、深入的研究,主要取得以下几方面的研究结果。