Silicon Nitride Nanoparticles (Si3N4, 99.9%, 15-30nm, Amorphous)

Silicon Nitride Nanoparticles

Introduction

Silicon nitride nanoparticles is a covalent ceramic material known for its high strength, excellent thermal stability, and superior resistance to wear and oxidation. Si3N4 are ultra-fine particles of silicon nitride, typically in the range of a few nanometers to micrometers. These nanoparticles retain the bulk properties of silicon nitride, such as high mechanical strength, low thermal expansion, and high-temperature stability, but they also benefit from the increased surface area and reactivity inherent in nanoparticles.

Due to their nanoscale size, Si3N4 exhibit unique characteristics compared to their bulk counterparts, including improved mechanical properties, increased reactivity, and enhanced performance in various applications.

Properties

High Mechanical Strength: Si3N4 Silicon nitride is renowned for its excellent mechanical properties, and when reduced to nanoparticle form, these properties are further enhanced due to the increased surface area and reduced particle size.

High-Temperature Stability: Si₃N₄ nanoparticles maintain their structural integrity at elevated temperatures, making them ideal for applications in extreme environments.

Wear and Corrosion Resistance:  are highly resistant to wear, abrasion, and chemical corrosion, especially in high-temperature and aggressive chemical environments.

Low Thermal Expansion: Si₃N₄ has a low coefficient of thermal expansion, which helps to reduce thermal stress in materials exposed to temperature fluctuations.

High Hardness: Silicon nitride exhibits high hardness, making the nanoparticles ideal for use in applications that require high resistance to wear and scratching.

Synthesis

Several methods are employed to synthesize  each providing different characteristics in terms of particle size, purity, and surface properties: