ムライト/モリブデン複合材料の無加圧焼結

概要

論文の詳細を見る
Mullite of stoichiometric composition (3Al_2O_3・2SiO_2) is a highly attractive candidate material for structural applications. In this study, the effect of Mo addition to mullite matrix has been investigated. Mullite/ Mo composites have been densified at 1600℃ for 2h by pressureless sintering. Conditions have been made to sinter the samples in a non-oxidizing atmosphere. No traces of oxides have been indentified by XRD analysis after polishing the specimens. Young's modulus increases with increase in Mo content and hardness decreases with the Mo content by obeying the rule of mixtures. Fracture toughness has been increased from 1.7 to 3.5 MPa・m<1/2> for the 30 vol%. Mo containing composites, which is twice that of monolithic mullite. Microstructures of the sintered samples were analyzed using SEM.
社団法人日本セラミックス協会の論文
2001-03-01