碳萃取复型是制备透射电镜样品的一种较为常用的方法。在研究钢中第二相粒子的形态、大小及分布的工作中,碳萃取复型具有它的独到之处。与塑料-碳二级复型相比,它具有分辨率高,图象反差大等优点。与金属薄膜样品相比,它具有制样较为简单,样品可供观察的视域大等优点。因此,碳萃取复型可为定量分析提供良好的条件。但在制备碳萃取复型时,往往很难找到合适的腐蚀脱膜剂,致使碳膜脱不下来而遭 Carbon extraction complex is a relatively common method for the preparation of TEM samples. In the study of the morphology, size and distribution of second phase particles in steel, the carbon extraction complex has its unique features. Compared with the plastic - carbon secondary complex, it has the advantages of high resolution, large image contrast. Compared with the metal film samples, it has the advantages of simpler sample preparation and larger viewing area for samples. Therefore, carbon extraction complex type for quantitative analysis to provide good conditions. However, in the preparation of carbon extraction compound, it is often difficult to find a suitable corrosion release agent, resulting in off the carbon membrane was