High Purity Silicon Nitride Si3N4 Powder CAS 12033-89-5, 99%

Silicon Nitride (Si3N4) Powder:
It is important to note that the word "you" means "you". silicon nitride composition The most stable combination of silicon and nitrogen is Si3n4. It is most thermodynamically stable of all silicon nitride. It is white, solid and has a high melting temperature. It's chemically inert. It is extremely hard (8.5 Mohs) and has high thermal resistance.

Silicon nitride The substance is inorganic. silicon nitride formula It is Si3N4. This is a high-hardness structural ceramic with lubricity, wear resistance and an atomic structure.

Silicon Nitride Thermal Conductivity It is 17.44 23,26W/m* (0 1000). It is resistant to the impact from the cold and the heat. It is precise, because silicon nitride ceramic They are used to produce mechanical components, such as bearings and air turbine blades. If Silicon nitride ceramic Si3n4 The heat-inspiration surface can be improved by using materials that are resistant to high temperature and do not transfer easily. This will not only improve the thermal efficiency but also the quality of the engine.

It is difficult for silicon nitride to be produced in bulk because it cannot be heated above 1850 degrees Celsius, which is below its melting temperature, due to the dissociation of silicon and nitrogen. It is difficult to use hot press sintering methods. Additions of materials (sintering binders or sintering aides) can achieve a bonding of silicon-nitride particles at lower temperatures. This is because they commonly induce liquid phase sintering. Spark plasma sintering, which heats powders very quickly by sending electric pulses through them in seconds, is a better alternative. Using this method, dense silicon nitride comps can be obtained at temperatures of 1500-1700 degrees Celsius.

It is a global trusted brand silicon nitride manufacturer The following are some examples of how to get started: silicon nitride supplier. Send an inquiry for the latest news silicon nitride price You can buy if you want to silicon nitride si3n4 Powder in bulk

Product characteristics of Silicon Nitride, Si3N4 powder:

Low density

High Temperature Strength

Superior thermal shock resistance

Excellent wear resistance

Good fracture toughness

Mechanical fatigue and creep resistance

Good oxidation resistance

Specification of Silicon Nitride Si3N4 Powder:
Product Name: Silicon Nitride
Purity: 99%
Particle Size: 0.5um-1um (a phase)

Chemical Composition of Silicon Nitride Si3N4 Powder:

Si3N4	N	O	C	Fe	Al	Ni	Zn
>99%	>38.9%	0.6-1.2	<0.2	<120ppm	<3ppm	<1ppm	<1ppm

How is Silicon Nitride Si3N4 Powder produced?
The hexagonal b-Si3N4 can directly carry out silicon nitride and nitrogen can be carried out in a 100-1400 deg C.
SiCL4 (L) + 6 NH3 (g) - Si (NH) 2 (S) + 4 NH4Cl (S) under conditions of 0 deg C
3 Si (NH) 2 (S) - Si3N4 (S) + N2 (g) + 3 H2 (g) under the conditions of 1000 deg C
Or use a carbon thermal reduction reaction in a nitrogen atmosphere of 1400-1450 deg C under a nitrogen atmosphere:
3 SiO2 (S) + 6 C (S) + 2 N2 (g) - Si3N4 (S) + 6 CO (g)
However, if the purity of silicon raw materials used will cause silicon nitride produced containing impurity silicate and iron. The silicon nitride synthesized by diamine decomposing is an amorphous shape, and it is necessary to further do an annealing treatment in nitrogen at 1400-1500 deg C to convert it into crystalline powder, and diamine decomposition is only important. Commercially in nitriding method to produce silicon nitride. The carbon-thermal reduction reaction is the simplest way to produce silicon nitride is also the most cost-effective means of manufacturing a silicon powder in industrial.

The electron-level silicon nitride film is made by chemical vapor deposition or plasma enhanced chemical vapor deposition techniques:
3 SiH4 (G) + 4 NH3 (g) - Si3N4 (S) + 12 H2 (g)
3 SiCL4 (G) + 4 NH3 (g) - Si3N4 (S) + 12 HCl (g)
3 SiCL2H2 (G) + 4 NH3 (g) - Si3N4 (S) + 6 HCl (g) + 6 H2 (g)

If you want to deposit silicon nitride on the semiconductor substrate , there are two methods available for use:
The vertical or horizontal tube furnace is performed at a relatively high temperature using low-pressure chemical vapor deposition techniques.
Plasma enhanced chemical vapor deposition techniques are carried out at a relatively low temperature in vacuum conditions.
The cell parameters of silicon nitride are different from single textile silicon. Therefore, depending on the deposition method, the generated silicon nitride film will generate tension or stress. In particular, when using plasma-enhanced chemical vapor deposition techniques, tension can be reduced by adjusting deposition parameters.
The silica was prepared by soluble gel, and then the silicon nanowires were treated with silica gel thereby in which carbon-thermal reduction method and nitride were treated. The special carbon particles in silica gel are produced by glucose at 1200-1350 deg C.

Applications of Silicon Nitride Si3N4 Powder:
Manufacturing structure: such as metallurgy, machinery, aviation, aerospace.
Surface treatment of metals and other materials: such as molds, cutting tools, turbine blades.
Composites: such as metal, ceramic and graphite composite, rubber, plastic
Colorless, transparent self-lubricating wear nanoparticle membrane for mobile phones;
Advanced surface protection such as a car;
Jack joint;
Ball valve and part;
Corrosion-resistant turbine;
Metallurgical, aviation, chemical, energy and machinery industry make parts such as bead/roller bearings, sleeves, valves and other wear;
Making cutting tools, molds, cylindrical wall coating, turbine rotors and blades;
Manufacturing composite materials such as ceramic, graphite, rubber, metal, adhesive, etc.
Nozzle, rocket and missile spray pipe.

Packing & Shipping of Silicon Nitride Si3N4 Powder :
We have many different kinds of packing which depends on the silicon nitride Si3N4 powder quantity.
Silicon nitride Si3N4 powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Silicon nitride Si3N4 powder shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.


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