Characterization of fracture toughness and micro-grinding properties of monocrystal sapphire with a multi-layer toughening micro-structure (MTM)
作者: J. ChengJ. WuY.G. ZhouY.D. GongX.L. WenQ. Wen
作者单位: 1Northeastern University, Shenyang, China
刊名: Journal of Materials Processing Tech., 2017, Vol.239 , pp.258-272
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmatprotec.2016.08.028
关键词: Multi-layer toughening micro-structure (MTM)Monocrystal sapphireLOCAMicro-grinding
原始语种摘要: Abstract(#br)The application of sapphire in micro-machining is often limited due to its high brittle feature. This study proposes and successfully fabricates a novel multi-layer toughening micro-structure (MTM) sapphire for improving its machinability in micro-grinding. A predicting model, which quantitatively predicts toughening effect U jc , is built based on both toughening theory and regression method. The fabrication procedures of MTM sapphire with different micro-structures (LOCA& slots, only LOCA) are presented and LOCA by ultraviolet curing plays a vital role in this paper. Results from static tests of a fatigue testing machine show that MTM sapphires have particular fracture behaviors compared with normal monocrystal sapphire. The breaking force F c is enhanced from 1.49...
全文获取路径: Elsevier  (合作)
影响因子:1.953 (2012)

  • sapphire 蓝宝石
  • MTM Modification Transmitted Memorandum
  • grinding 
  • toughening 韧化
  • micro 
  • structure 构造
  • layer 
  • properties 道具
  • monocrystal 单晶体
  • fracture 断口