电导法测量保护渣结晶温度

摘要

为了解决现行保护渣结晶温度测量手段存在着各种不足的问题,提出了电导法的研究思路.在理论分析了液渣电导激活能与析出相成分、结晶率之间的关系后,设计出了一种简易的测量方法,并采用差热分析（DTA）、偏光显微镜和X射线衍射法对其相关的测量结果进行了验证.结果表明：该测量方法准确度高,成本较低,对主要析出相的判断基本正确,可作为保护渣结晶温度的新型研究手段.%A feasible conductivity method of measuring the crystallization temperature of mold flux was proposed to solve the limitations of the existing measuring methods.At first,the relationship between the activation energy and compositions of precipitates as well as the ratio of crystallization was analyzed theoretically.Then a simple measuring method was developed based on the former theoretical analysis.The measuring results were verified by differential thermal analysis（DTA）,polarizing microscopy and X-ray diffraction analysis.It is shown that this measuring method has high accuracy and low cost,and the determination of main precipitates is basically right,indicating that this method can be a new means studying the crystallization temperature of mold flux.