ZrB₂-based ceramic composites were prepared by spark plasma sintering using ZrB₂ powder prepared by molten salt method as raw material and SiC and nano-graphite as additives. The effects of nano-graphite addition on the physical properties and oxidation resistance of ZrB₂-based ceramic samples were investigated. The results show that the addition of an appropriate amount of nano-graphite can effectively improve the density of ZrB₂-based ceramic composites and improve the physical properties of the materials. The flexural strength of the ceramic sample with 8 vol.% nano-graphite reached 418.54 MPa, which was 53.14% higher than that of ZrB₂–SiC ceramic material (273.31 MPa), and its oxidation resistance was also significantly improved. It demonstrats that the addition of an appropriate amount of nano-graphite can effectively improve the physical properties and oxidation resistance of ZrB₂–SiC ceramic composites. Via prolonging its service life in application and promoting the development of ZrB₂-based ceramic composites, it is of great significance for clean steel smelting.

以熔盐法制备的ZrB ₂粉末为原料，SiC和纳米石墨为添加剂，采用放电等离子烧结法制备了ZrB _{2基陶瓷复合材料。}研究了纳米石墨的添加对ZrB _{2基陶瓷样品物理性能和抗氧化性能的影响。}结果表明，添加适量的纳米石墨可以有效提高ZrB ₂基陶瓷复合材料的致密性，改善材料的物理性能。_{添加8 vol.%纳米石墨的陶瓷样品的抗弯强度达到418.54 MPa，比ZrB 2} -SiC陶瓷材料的抗弯强度（273.31 MPa）提高了53.14% ，抗氧化性能也显着提高。表明适量纳米石墨的添加可以有效提高ZrB ₂ -SiC陶瓷复合材料的物理性能和抗氧化性能。通过延长其应用寿命，促进ZrB ₂基陶瓷复合材料的发展，对清洁炼钢具有重要意义。