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采用表面浸渗复合技术，通过常规铸造方法在铸铁表面获得ＳｉＯ２陶瓷颗粒增强的金属陶瓷复合层，并用于工业钢锭模的表面强化。在此基础上采用扫描电镜，图像分析仪和微区ｘ射线衍射研究了金属陶瓷复合层的组织性能和界面结构。结果表明，采用表面浸渗复合方法在金属表面可获得２～５ｍｍ厚的金属陶瓷复合层。复合层中陶瓷颗粒均匀分布，金属由基体连续过渡到表面。铸铁基体与ＳｉＯ２之间存在明显的界面反应，二者的结合为反应结合。采用金属陶瓷表面复合强化的钢锭模，其使用寿命比普通钢锭模提高近１倍，且钢锭模内表面抗氧化和龟裂性能明显提高。
The surface impregnation composite technology is adopted to obtain the cermet composite reinforced by SiO2 ceramic particles on the surface of the cast iron by the conventional casting method and is used for the surface strengthening of the industrial steel ingot mold. On this basis, the microstructure and interface structure of the cermet composite layer were investigated by SEM, image analyzer and X-ray diffraction. The results show that the surface impregnation composite method can be obtained on the metal surface 2 ~ 5mm thick cermet composite layer. Ceramic particles in the composite layer are uniformly distributed, and the metal continuously transitions from the substrate to the surface. Cast iron matrix and SiO2 there is a clear interface between the reaction, the combination of the two reactions combined. The use of metal ceramic surface enhanced steel ingot mold, the service life of nearly 1 times higher than ordinary ingot mold, and ingot mold surface oxidation and cracking performance was significantly improved.