悬浮熔融(无坩埚熔融)作为一种特殊的加热手段代替常用的石墨坩埚加热方法,对金属中氮的抽取具有明显的优点,主要是加热快、温度高而均匀、空白值低、熔珠流动性好、脱气表面积大和有强烈的电磁搅拌作用(有助于试样在熔浴中均匀溶解和气体快速释出),从而弥补了石墨坩埚中加热抽取方法在动力学方面的某些不足,能够迅速而完全地抽出各种金属中的氮,特别是对于 Suspension melting (without crucible melting), as a special heating means instead of the commonly used graphite crucible heating method, has obvious advantages on the extraction of nitrogen in metal, mainly heating fast, high temperature and uniform, low blank value, melt flow Good degassing surface area and a strong electromagnetic stirring (help the sample dissolved evenly in the bath and the rapid release of gas), which make up for the graphite crucible heating method in some aspects of the lack of kinetics, The ability to quickly and completely extract nitrogen from various metals, especially for