High-entropy low-thermal-expansion ceramic material and sintering synthesis method thereof

• Main Authors: LIU XIANXING, ZHANG WEIFENG, HAO XIANGKAI, WANG MENGYUE, TIAN JIANJUN, XIANG YUMENG
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2021
• 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 discloses a high-entropy low-thermal-expansion ceramic material and a sintering synthesis method thereof, and belongs to the field of inorganic non-metallic materials, Fe2O3, Co2O3, Ni2O3, Al2O3, Cr2O3, MoO3 and WO3 powder are used as raw materials, the raw materials are weighed according to the stoichiometric molar ratio of Fe: Co: Ni: Al: Cr: Mo: W = 0.4: 0.4: 0.4: 0.4: 0.4: 1.5: 1.5 in a target product (FeCoNiAlCr) 0.4 Mo1.5 W1.5 O12, the raw materials are ground and mixed uniformly, and the target product is obtained by sintering synthesis for 2-5 h directly or after tabletting at 800-900 DEG C. The high-entropy low-thermal-expansion ceramic material (FeCoNiAlCr) 0.4 Mo1. 5W1. 5O12 is prepared by adopting a solid phase method, the process is simple, the cost is relatively low, and the material is suitable for industrial production. 本发明公开了一种高熵低热膨胀陶瓷材料及其烧结合成方法，属于无机非金属材料领域，以Fe2O3、Co2O3、Ni2O3、Al2O3、Cr2O3和MoO3、WO3粉末为原料，按目标产物(FeCoNiAlCr)0.4Mo1.5W1.5O12中化学计量摩尔比Fe:Co:Ni:Al:Cr:Mo:W=0.4:0.4:0.4:0.4:0.