Brief
Introduction
The SinoSi's Nano-Meter Silicon Materials is a powder which main includes Si Powder, SiC Powder, Si2N4 Powder, Si/N/C Powder and C Powder and so on. The primary principle of laser synthesis Nano powder is that the gas phase synthesis reaction induced by the laser takes place as gas reactants coming into the laser beam to form the reaction zone, making use of the property of some gas reactants strongly absorbing the power of the energy of the laser due to their absorbing line nearly according with the wave line of the laser, and Nan powders are finally formed by a rapid condensing course. Because of high purity of reactants controlled by the quality flow meters and a very small reaction zone, also and the reaction under the cool wall condition and all powders passing through nearly the same Temperature ?Time course which make the nucleus forming, particles growing up and terminating completed within 10 -3 second and particles being cooled with 10 3 -10 6 ? /s, the powders present very small size, high purity and high uniformity. In order to control the oxygen and purity of products, the reacting system is pumped into vacuum and filled with high pure protected gas before the production, the oxygen content is controlled with the oxygen analytic apparatus during the production. Finally, keeping from oxygen, the products are gathered and parked at Nitride gas condition.
Applications
The nano powders we produced are ideal primary materials for advanced ceramics with wonder strength and toughness. The nano composite ceramics posses many unique properties such as: extreme wear, corrosion and heat resistance exceeding those of traditional ceramics. It has applied to the special industrial products such as ceramic cutting tool, bearing, the seal ring etc.
Based on the nano powders, the development of the super plastic Si3N4/SiC ceramics is greatly extending the application of advanced ceramics to the wider industrial fields with the machining performance nearing to the metal ones.
As the additives, silicon based nano powders can be used in macromolecule polymer such as rubber, plastics and other thermoplastic elastomer, and in light metal materials such as Al, Mg and so on, to enhance the toughness and other mechanical abilities.
Nano ceramic powders and nano carbon powder produced by laser are being applied to the medicine and medical instruments as biomaterials
The applications in the functional materials as follow:
5.1) High purity nano Si powder is the advanced material for micro-electric and quanta component.
5.2) Nano SiC, Si3N4, Si/N/C and B4C powders play an important role in ultra-precision polishing to super hard material such as sapphire.
5.3) The Si-based nano powders can be used as one of the components for absorbing infrared, ultraviolet radiation and radar wave etc.
5.4) The block made of nano Si or Si3N4 crystal grain has special electric performances, Such as high conductance of alternate electric current; the dielectric constant changing with temperature and press; the higher piezoelectric coefficient than ordinary PZT ceramic.
5.5) The nano powders we produced can be applied to add to the special functional fiber and coating.
5.6) Fe-based Nan powders have the properties of super paramagnetic material. As the carriers of new targeting medicines, this kind of martial has a wonderful foreground.
In a word, the products can wildly applied to aerospace, military industry, microelectronics, machine, automobile, chemical industry, nuclear industry fields.
Grain Size Report N.M Silicon Photos
Technical Specifications
Powder |
Purity (Wt%) |
Oxygen
(Wt%) |
Average Particle
( nm ) |
Particle
Shape |
Color |
Crystal
Type |
Si |
=99 |
=1 |
20-50 |
Spherical |
Deep Gray |
Crystalline |
SiC |
=98 |
=1 |
10-30 |
Spherical |
Milk White |
?SiC |
Si 3 N 4 |
=98 |
=1.5 |
10-30 |
Spherical |
Gray Black |
Amorphous |
Si/N/C |
=96 |
=3 |
12-30 |
Spherical |
Brown |
Amorphous |
C |
=98 |
|
20-30 |
Spherical |
Black |
Amorphous |
Packing
In plastic bottle.
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