蚀坑分析技术是从金相分析中所发展起来的一种结晶学分析技术。由于扫描电镜比光学显微镜具有大得多的焦深和高得多的分辨率,更能充分发挥蚀坑分析术进行结晶学定量分析的优点,故这种分析技术已成为一种扫描电镜的专门技术,称为扫描电镜的蚀坑分析术。在本工作选用了电弧熔炼钨的解理断口作为研究对象,这是因为在体心立方金属中,钨是最典型的脆性解理 Pit corrosion analysis technique is a crystallographic analysis technique developed from metallographic analysis. Because scanning electron microscopy has a much larger depth of focus and a much higher resolution than optical microscopy, the advantages of etch pit analysis for crystallographic quantification can be fully exploited, so this analytical technique has become specialized in scanning electron microscopy Technology, known as scanning electron microscopy pit analysis. In this work, the cleavage fracture of arc melting tungsten was selected as the research object, because tungsten is the most typical brittle cleavage in the body-centered cubic metal