TiB_2 系セラミックスの機械的特性に及ぼす Mo_2CoB_2, TiH_2 および TiC_<0.7>N_<0.3> 添加の効果(<特集>複合材料)

概要

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The addition of Mo_2CoB_2 and TiH_2 to the TiB_2 improved the density, the bending strength and other properties. Especially, the additions of 15wt%Mo_2CoB_2 and 2wt%TiH_2 brought the highest bending strength as 149kgf/mm^2 and high hardness as HV2800. Sliding wear test against mild steel showed that TiB_2-TiH_2-Mo_2CoB_2 ceramics have relatively little specific wear rates compared with SiC, Si_3N_4, ZrO_2 but have large specific, wear rates compared with Al_2O_3 and cemented carbides (D10). Specific wear rates of TiB_2 based ceramics could be decreased less than Al_2O_3 and cemented carbides (D10) by the addition of TiC_<0.7>N_<0.3> without lowering the bending strength. Furthermore this ceramics have good abrasive wear resistance.
社団法人日本鉄鋼協会の論文
1989-09-01