标题：Effect of sintering aid on microstructure and mechanical properties of TiB2/TiN tool materials
作者：Gu M.L.; Zhang J.H.; Wei Z.
作者机构：[Gu, M.L] School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300130, China, Center for Advanced Jet Engineering Technologies ( 更多
通讯作者地址：[Gu, M.L] School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300130, China;
来源：Advanced Materials Research
关键词：Mechanical properties; Microstructure; Sintering aid; TiB2/TiN; Tool materials
摘要：TiB2/TiN composites with various content of Ni and Mo as sintering aid were hot-pressed at 1530?. Effect of the content of sintering aid on microstructure and mechanical properties is investigated. Experimental results show that the fracture toughness of the composites increases consistently with an increase in the sintering aid content, however, the flexural strength gets to the maximum when the content of sintering aid is 10vol%. A new eutectic phase of MoNi can be found in the composites by X-ray diffraction (XRD) when the amount of sintering aid is over 7vol%. Scan electron microscope (SEM) analysis shows that the density of the composites increases consistently with the increasing of the sintering aid. But the abnormal-growth grains can be found and deteriorates the flexural strength in the composite No.4 because of the excessive sintering aid. © (2011) Trans Tech Publications.