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Zirconia ceramic, because of its high strength and high toughness, hardness and good chemical stability, by the extensive attention of scholars from various countries. TZP ceramics therefore has excellent mechanical properties, but its use in high temperature mechanical properties of a sharp decline. Thus, with the introduction of high strength, hardness, chemical and thermal stability, particularly high temperature strength of the silicon carbide reinforcing particles as a second phase, in order to improve the wear properties of TZP ceramics. 90 #, 320 #, 600 #, 1500 # SiC 3Y-ZrO 2 powder 8Y-ZrO 2 powder, Al 2 O 3 powder as raw materials, preparation of to get 3YSZ-SiC 3YSZ-Al 2 O 3 -SiC 8YSZ-SiC 8YSZ-Al 2 O 3 -SiC composite material, the study sample the phase composition, microstructure and mechanical properties and erosive wear properties and phase composition and display micro-structure, and to explore the amount of SiC particle size SiC particles and the additive amount of zirconium oxide - silicon carbide complex relative resistance to the impact of material properties. The study showed that: the prepared the 8YSZ-SiC composite ceramics sintered under nitrogen atmosphere at 1550 ℃ × 3h protection, when added to 3wt.% 1500 # SiC has the largest volume density, flexural strength and Rockwell hardness 5.31 g · cm -3 , 81MPa and 84.9HRA. Sintered in 1550 ℃ × 3h under a nitrogen atmosphere the 8YSZ-Al 2 O 3 -SiC composite ceramic materials, when the added amount of the 1500 # SiC 3wt.% , the volume density of the sample up to 5.27g · cm -3 ; When the 1500 # SiC added in an amount of 6 wt%, the sample having the smallest apparent porosity and the maximum flexural strength, 0.07% and 246MPa respectively. The study found that for 3YSZ-SiC composite material, the volume of the liquid-solid erosion rate with 320 # SiC add the amount of the raise and gradually increase. For the 8YSZ-SiC material, when the 1500 # SiC particles added 6wt.%, The sample volume erosion rate lowest of 0.07 -6 cm 3 / mm < sup> 2 hr. 3wt.% 1500 # SiC particles added 8YSZ-Al 2 O 3 -SiC composite material, the sample volume lowest erosion rate of 0.32 × 10 -6 cm 3 / mm 2 hr. The high temperature solid particle erosion wear test showed that tetragonal zirconia phase change due to its own role, vulnerable to chipping under high temperature conditions, by adding 5wt.% SiC can improve its resistance to high temperature erosion wear performance. Hard second phase particles added to a certain extent to improve the erosion resistance of ceramics.
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