Preparation method of ZrB2-ZrC-SiC nano composite ceramic material

• Main Authors: TAO CHUANGFANG, JIN XIN, LIAO HUANYI, ZHOU ZHE, MAO WEIGUO, CHEN CHANG
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2021
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention provides a preparation method of a ZrB2-ZrC-SiC nano composite ceramic material. The preparation method comprises the following steps: respectively preparing a zirconium source solution, a boron source solution, a silicon source solution and a carbon source solution; mixing the four solutions to obtain a target precursor solution; then drying and grinding; then carrying out ball-milling mixing; and finally, obtaining the ZrB2-ZrC-SiC nano composite ceramic material through cold press molding, isostatic pressing densification and pressureless sintering in sequence, wherein the volume ratio of ZrB2 to ZrC to SiC in the obtained material is (64-16): (64-16): 20; the ZrB2 and the ZrC are crystal grains with the average grain size of 90 to 110nm; and SiC is a mixed phase of particles, whiskers and nanowires. 提供了一种ZrB2-ZrC-SiC纳米复合陶瓷材料的制备方法：分别制备锆源溶液、硼源溶液、硅源溶液和碳源溶液；混合四种溶液得到目标前驱体溶液；再经干燥、研磨；然后进行球磨混合；最后依次经冷压成型、等静压致密化、无压烧结，得到所述ZrB2-ZrC-SiC纳米复合陶瓷材料，所得材料按体积比计ZrB2：ZrC：SiC的比例为：（64-16）：（64-16）：20；所述ZrB2、ZrC为平均粒径