Silicon Nitride Nanoparticles and Their Applications

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silicon nitride nanoparticles are super hard materials with excellent fracture toughness and high strength. They have been used in a wide variety of applications, such as energy, machinery, aviation, chemical, and medical industry. They have good chemical and thermal stability and are corrosion-resistant. They are also very useful in manufacturing structure devices, such as sleeves, valves, sliding bearings, and ball and roller bearings.

Water Absorption: a Potential Disadvantage for Nanodielectric Insulation Systems

Increasing the amount of water absorbed by nanofillers can have a significant impact on the dielectric properties of insulation materials. In particular, the polar functionalities of nanofillers, such as hydroxyl groups, tend to form shells around the particles and increase the amount of water absorbed by the system. This can reduce the conductive performance of the material.

Si wafer waste synthesis: a novel method for effective upcycling

We synthesized silicon nitride nanoparticles from poor-grade and broken Si wafers using a DC plasma jet system with nitrogen as the nitridation source. The efficiency of the reactor design was enhanced by adjusting the feeding rate of Si precursor to achieve an optimum vapor density. The crystalline Si3N4 phase was observed after the synthesis process, and the crystallinity of the Si3N4 particles was determined by X-ray diffraction (XRD) analysis.

The XRD patterns of the as-synthesized nanopowders under the 0.1 g/min feeding condition indicate an amorphous shoulder with weak crystalline Si peaks. In addition, the XRD pattern of the nanopowders obtained under the 0.4 g/min feeding condition (Runs 2-4) shows that a- and b-Si3N4 peaks were formed.