福建冶金2026，Vol.55Issue(5)：52-55,4.
Yb2O3助烧剂对Al2O3/SiCw复合陶瓷刀具的性能影响研究
The Effect of Yb₂O₃ Sintering Aid on the Performance of Al2O3-SiCw Composite Ceramic Cutting Tools
摘要
Abstract
Al2O3/SiCw composite ceramics show great potential in cutting difficult-to-machine materials.This paper systematically analyzes the effects of Yb2O3 addition(0.5%to 2.5%)on the microstructure,mechanical properties,and tool wear behavior during machining of nickel-based superalloys,by studying the vacuum hot-press sintering process of Al2O3/SiCw ceramics..The results indicate that the intergranular glass phase formed by Yb2O3 effectively promotes densification.Both hardness and fracture toughness first increase and then decrease with rising Yb2O3 content,achieving the best strength-toughness match at 1.5%addition.The tool wear amount in cutting tests exhibits a trend of first decreasing and then increasing.The ceramic insert with 1.5%Yb2O3 demonstrates the best wear resistance.This study provides a theoretical basis for the microstructural design of high-performance ceramic tools and the efficient machining of difficult-to-cut materials.关键词
Al2O3/SiCw复合陶瓷/Yb2O3 烧结助剂/微观结构/切削性能/镍基高温合金Key words
Al2O3/SiCw composite ceramics/Yb2O3 sintering aid/microstructure/cutting performance/nickel-based superalloys引用本文复制引用
黄奕芳,郑文庆,蔡晓康,翁志敏,刘超..Yb2O3助烧剂对Al2O3/SiCw复合陶瓷刀具的性能影响研究[J].福建冶金,2026,55(5):52-55,4.基金项目
福建省青年科技人员育成项目(项目号:2025350367) （项目号:2025350367）
