Researchers from Tsinghua University and Harbin Institute of Technology have investigated the phase decomposition in multi-component carbide ceramics, focusing on the impact of carbon content. Using spark plasma sintering, they fabricated (TiZrVNb)C_x ceramics and discovered that reducing carbon content leads to spinodal-like decomposition. This process creates Zr-rich and Zr-poor phases with high dislocation densities, enhancing mechanical properties like hardness and strength. Their findings provide insights for designing and optimizing ultra-high temperature ceramics for aerospace and nuclear applications.
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