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99.99% high purity beta sic nano powders Our 4N nano β-SiC (99.99% purity) is precision-synthesized via CVD, delivering ultra-fine particle size with exceptional sintering activity for high-density ceramic components. It thrives in the most demanding semiconductor environments — from CMP chucks and lithography stages to plasma etch focus rings and chamber liners. Its chemical inertness and minimal metal impurity outgassing maximize chip yield where it matters most. Trusted by leading fabs and equipment makers worldwide. more
Monodisperse spherical Nano SiO₂ aqueous dispersion/colloid This transparent SiO₂ aqueous dispersion is synthesized via patented sol-gel technology, featuring optical excellence visible light transmittance and shelf life >18 months under ambient storage. It is widely used in electronics as low-k dielectric materials, in biomedicine as drug carriers, and in optics for anti-reflection coatings. more
Magnéli Phase Nano Titanium suboxide Ti₄O₇ Powder Magnéli phase Nano titanium suboxide (Ti₄O₇) is an advanced functional material with a unique crystal structure, appearing as a blue-black powder with a precisely controlled particle size of 200–300 nm and a purity of up to 99.9%. As an important member of the titanium oxide family, Ti₄O₇ combines excellent electrical conductivity, chemical stability, and catalytic activity, making it an ideal choice for new energy, environmental protection, and electronics applications. more
Boron Nitride Nanotubes(BNNTs): High Thermal Conductivity Heat Dissipation Fillers BNNTs share the tubular structure of carbon nanotubes but deliver fundamentally different properties: electrical insulation, superior thermal stability (up to 900°C in air), and high thermal conductivity. With a wide bandgap of ~5.5 eV, they offer consistent, predictable performance where CNTs fall short. more
Phase-Smart VO₂ Nanoparticles: Intelligent Thermal Response, Engineered to Order From Thermochromic Color Change material to Intelligent Temperature Control material: The Performance Revolution and Application Blueprint of Vanadium Dioxide and Tungsten-Doped VO2 more
Precision Ceramic 3D Printing Solutions turns impossible structures into reality Precision Ceramic 3D Printing Solutions – Redefining the boundaries of ceramic manufacturing, from dental restorations to aerospace-grade high-temperature components.Precision ceramic 3D printing turns impossible structures into reality. more
New conductive material nickel nanowires NiNWs Hongwu Nickel nanowires have a wide range of potential applications in electronic materials, catalysis, polymers, magnetic storage ultra-high density recording materials, sensors and self-lubricating materials. more
Transparent Colloidal Ag Antibacterial Nano Silver Colloid Ag (Antibacterial Nano Silver Colloid) has been well known antibacterial, antiviral and antifungal properties are enhanced by small particle size and large surface area. more
Nano silica particles used in epoxy resin, superhydrophobic coating nano silica powder Nano silica particles, 20-30nm, 99.8% purity, widely used in exposy resin and superhydrophobic coating. more
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Some nanomaterials for Thermochromic Application
Thermochromism refers to the phenomenon where a material undergoes color changes under temperature changes. This change is usually caused by changes in the electronic or molecular structure of the material. Its application principle mainly involves t...
Si3N4 powder is available in beta phase and alpha phase, nano size and micron size, 99.9-99.99%.
product origin:
Chinaitem no.:
L559.shipping port:
guangzhou, shenzhencolor:
grey powderpayment:
T/T. PayPalSi3N4 alpha phase, si3n4 ceramic powders, si3n4 powder for bearings
Spec: alpha: 100-200nm. We could also supply beta phase si3n4 powder, 99.9-99.99%, any interested, feel free to contact us.
Application for si3n4 ceramic powders:
The longer stacking sequence results in the alpha phase having higher hardness than the Beta phase.
However, the alpha phase is chemically unstable compared with the beta phase. At high temperature
when a liquid phase is present, the alpha phase always transforms into the beta phase. Therefore,
beta si3n4 is the major form used in si3n4 ceramics.
One of the major applications of sintered silicon nitride is in automobile industry as a material
for engine parts. Those include, in diesel engines, glowplugs for faster start-up;
precombustion chambers (swirl chambers) for lower emissions, faster start-up
and lower noise; turbocharger for reduced engine lag and emissions.
In spark-ignition engines, silicon nitride is used for rocker arm pads for lower wear,
turbocharger for lower inertia and less engine lag, and in exhaust gas control valves for
increased acceleration.
Silicon nitride bearings are both full ceramic bearings and ceramic hybrid bearings with balls
in ceramics and races in steel. Silicon nitride ceramics have good shock resistance compared to
other ceramics. Therefore, ball bearings made of silicon nitride ceramic are used in performance
bearings.
Silicon nitride has long been used in
high-temperature applications. In particular, it was identified as one of the few monolithic
ceramic materials capable of surviving the severe thermal shock and thermal gradients generated
in hydrogen/oxygen rocket engines.
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