CrSi₂/NbSi₂複合材料の作製と評価

抄録

CrSi₂ based composites were fabricated by the pulse electric current sintering (PECS) technique and normal sintering technique. The sintering behaviors for these CrSi₂ based composites were mainly investigated. The dense CrSi₂ based composites with the addition of 5-50mol%NbSi₂ were obtained at 1100°C by PECS technique, although not by the normal sintering technique even at 1400°C. Furthermore the relative densities of CrSi₂/NbSi₂ composites prepared by the PECS decreased with the sintering temperature. Young's modulus for these CrSi₂/NbSi₂ composites was evaluated. The microstructure of these CrSi₂/NbSi₂ composites was observed mainly by scanning electron microscopy. NbSi₂ particles were homogeneously dispersed in the CrSi₂ matrix.