Microstructural Evolution of Ni-SiC Composites Manufactured by Spark Plasma Sintering

Abstract The presented paper concerns the technological aspects of interface evolution in nickel-silicon carbide composite during sintering process. goal our investigation was to analyse material changes occurring due violent reaction between nickel and silicon at elevated temperatures. matrix with 20 vol pct SiC particles as reinforcing phase fabricated by spark plasma technique. tests were conducted variable process conditions (temperature, time, pressure). It revealed that strong interaction individual components scale observed depends on parameters. To identify microstructural evolution, scanning electron microscopy, energy dispersive spectroscopy, transmission X-ray diffraction, Raman spectroscopy used. decomposition progresses extension time. As final product reaction, new phases from Ni-Si system free carbon detected. step-by-step materials allowed us reveal course creation structure, especially zone. detailed analysis formation main achievement paper.