Wear-resistant microcrystalline alumina ceramic powder, wear-resistant microcrystalline alumina ceramic and preparation method and application of wear-resistant microcrystalline alumina ceramic

• Main Authors: ZHANG YAQI, YANG HUI, WU TINGTING, FENG YIPENG, LIU GUANJUN, ZHAO HONGYUAN, ZHANG MINGMING, WANG ZHANKUI, FU SUFANG, LI YONGFENG, SU JIANXIU
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; LIME, MAGNESIA; METALLURGY; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention discloses wear-resistant microcrystalline alumina ceramic powder, a wear-resistant microcrystalline alumina ceramic and a preparation method and application of the wear-resistant microcrystalline alumina ceramic. The powder comprises 99-99.99% of sub-micron alpha-Al2O3 powder and 0.01-1% of flux powder, wherein the chemical composition range of the flux powder comprises 20-40% of MgO, 0-10% of Al2O3 and 50-80% of Y2O3; during preparation, ball milling, granulation, molding and aging are performed, a low-temperature fast-firing method is adopted for firing at 1450-1620 DEG C for 1-4 hours. The prepared microcrystalline alumina ceramic has the advantages of fine grain size, high density and excellent abrasion resistance, use requirements of a high-purity ultrafine powder mechanical grinding system can be met, and a simple production process, low requirements for equipment and good application prospects are achieved. 本发明公开了一种耐磨微晶氧化铝陶瓷粉体、耐磨微晶氧化铝陶瓷及制备方法和应用，粉体采用亚微米α-AlO粉99-99.99％，熔剂粉0.01-1％配比，熔剂的化学组成范