More nanoparticles & nanomaterial

Home More nanoparticles & nanomaterial

Aluminum Nitride is a preferred choice for substrate and thermal management applications

New products

  • Platinum Black Catalyst Platinum Nanopowders

    Customized Metal Platinum Black Catalyst Platinum Nanopowders Platinum is one of noble metals, it is one of the best catalyst and antioxidants, nano platinum ( Pt ) with small particles size, strong, safe, stable, reliable, environmentally friendly, non-toxic, tasteless, harmless, can be widely used in biomedical, Catalytic industry, cosmetic etc. 1. Platinum Nanopowders for biomedical  Hydrogen and nano-platinum have a synergistic effect that can be used in conjunction with the treatment of oxidant stress disorders; Studies have shown that platinum nano particle-mediated photo-thermal effect in the treatment of bone metastases in nude mice can be a good inhibition of bone tumor growth and osteolytic bone destruction; Lactic acid bio-sensor based on nano - platinum black modification for rapid detection, etc.  2. Platinum Nanopowders as catalyst  Nano platinum are widely applied in catalyst part, Nano-platinum powder has excellent bio-catalytic activity, it can be applied to polymer hydrogenation, reduction and synthesis. Nano platinum also can be used as fuel cell catalyst, due to its high cost, due to its high cost, now some use nano nickle to replace the platinum, and some are looking for ways to improve nano platinum efficiency as catalyst in fuel cells to save cost. Last year Chinese researches have developed a superfine platinum nanowire catalyst on the surface of the zigzag, greatly increasing the surface activity and specific surface area of the fuel cell catalyst, increasing its overall catalytic activity by more than 50 times. 3. Platinum Nanopowders for cosmetics Platinum nanoparticles , due to its strong oxidation resistance Platinum can effectively remove free radicals in the human body. Play the anti-aging effect and at the same time to achieve whitening bright. Platinum Nanopowders can also be used for food preservative, car exhaust purification, etc. Nano platinum do have a lot of amazing functions, we cannot list its amazing functions one by one though.  If you're interstsed in Platinum Nanopowders, please feel free to contact us as more

Latest news

Silicon carbide applications and properties Silicon carbide applications and properties

Silicon carbide is an important non-oxide ceramic which has diverse industrial applications. It has high hardness and strength, chemical and thermal stability, high melting point, oxidation resistance, high erosion  resistance, in other words, h...

Aluminum Nitride is a preferred choice for substrate and thermal management applications

  • May 12,2015.
Aluminum Nitride is a unique ceramic material that combines high thermal conductivity with high electrical resistivity. Only a few ceramics possess high thermal conductivity: Beryllium Oxide (BeO) and cubic Boron Nitride (c-BN) are virtually the only other examples. However, the use of BeO is restricted due to its toxicity and c-BN is very hard to produce.

For the thermal conductivity is the ability of a material to transport heat when subjected to a temperature gradient. In dielectrics like Aluminum Nitride, heat is transferred through lattice vibrations (also known as "phonons"). Materials with simple structure, covalent bonding and low atomic mass generally possess high thermal conductivity.
The actual thermal conductivity of a material is affected by factors that hinder phonon propagation. Temperature, impurities, pore size and distribution, grain size, compositional homogeneity and orientation all affect the lattice vibrations, and therefore thermal conductivity.

The theoretical thermal conductivity of Aluminum Nitride is about 280 Wm-1K-1. The actual thermal conductivity depends on processing conditions and raw material purity. The presence of oxygen impurities in the lattice is a major detriment; As oxygen displaces nitrogen in the lattice it creaes vacancies that interrupt phonon propagation and scatter the phonons, therefore reducing thermal conductivity.

Copyright © 2010-2019 Hongwu International Group Ltd All Rights Reserved.

The professional team to service !

Chat now

Live chat

    Email us with any questions or inquiries or use our contact data. We would be happy to answer your questions.