Synthesis and Characterization of Ultra-Hard Ceramic AlMgB_(14)-Based Materials Obtained from Al_xMg_y Intermetallic Powder and Boron Powder by the Spark Plasma Sintering

摘要

In this work, AlMgB_(14)-based materials were produced from the intermetallic Al_xMg_y powder and boron powder using mechanical treatment with a planetary mill and subsequent spark plasma sintering (SPS). Phase composition and structure of obtained materials were examined. Phase composition of sintered material is represented by the AlMgB_(14) phase (-95 wt%) and the spinel phase MgAl_2O_4 (~5 wt%). The sintered bulk sample has a non-porous structure. The formation of the spinel phase is explained by the presence of oxygen in the raw boron powder.