【摘要】 研制了蜂窝型结构的陶瓷芯板并采用普通铸渗工艺制备了具有蜂窝型陶瓷芯板复合层的高铬铸铁基复合材料。利用SEM对陶瓷芯板的表面形貌及成形原理进行了分析研究,测试了陶瓷芯板抗高温热冲击性能;通过金相显微镜、XRD等分析手段研究了复合材料界面结构及物相组成。蜂窝型陶瓷芯板在高温铁液的冲刷下完整保持了原有形貌,且基体与增强颗粒之间形成了良好的冶金结合。更多还原

【Abstract】 Ceramic plates with honeycomb structure were made,and the common infiltration casting technique was adopted to prepare high-Cr white cast iron matrix composites with honeycombshaped ceramic plates.Surface morphologies and forming principle of the ceramic plates were analyzed by scanning electron microscope(SEM);resistibility of the ceramic plates to high temperature heat shock was tested.Structure and phases of the interface were investigated with optical microscope and X-ray diffraction(XRD).Honeycomb-shaped ceramic plate maintained the original morphology integrally under the hot metal erosion,and the casting technique ensures a good metallurgical bonding of the interface between the high-Cr white cast iron and the reinforced particles.更多还原