Preparation and Performance Study of TiC Network Ceramic/High Chromium Cast Iron Composite Materials for Direct Write 3D Printing
TiC network ceramics were prepared using slurry direct writing 3D printing technology,and TiC network ceramics/high chromium cast iron composite materials were prepared by pressureless infiltration.Scanning electron microscopy was used to observe the TiC network ceramic preform and the microstructure after infiltration.EDS was used to analyze the distribution of interface elements,and the hardness,compressive strength,and wear resistance of the composite material were measured.The results showed that the TiC lines and high chromium cast iron lines in the composite material formed a three-dimensional interpenetrating network structure in space,achieving the effect of spatial toughening and improving the overall mechanical properties of the composite material.As the volume fraction of TiC lines in the composite material increased,the hardness increased,and the compressive strength and wear resistance both increased first and then decreased,reaching the optimal value at 50%TiC volume fraction.
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