Characterization of Ultra-Hard Ceramic AlMgB_(14)-based Materials Obtained by Self-propagating High-Temperature Synthesis and Spark Plasma Sintering

摘要

In this work, AlMgB_(14)-TiB_2 composite materials were obtained by thermochemical-coupled self-propagating high-temperature synthesis (SHS) and subsequent spark plasma sintering. The phase composition of the raw powder mixture, the obtained SHS product, and the sintered sample was determined. The main phase in the obtained SHS product and the sintered sample is TiB_2. The structure of the sample is not uniform. Large TiB_2 agglomerates were found. The hardness of the obtained sample is 26.1 GPa.