Trending

Answers

  • 0
  • 0

What is Silicon Nitride Si3N4 Powder?

If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net



U.S. refiners forecast strong first-quarter earnings as margins on gasoline and diesel sales improved, refining capacity fell sharply and crude supplies tightened due to the Russia-Ukraine war.

Global refining capacity has declined amid the coronavirus pandemic, with several less profitable refineries closing in the past two years. However, global fuel demand has rebounded to near pre-pandemic levels, boosting the profits of facilities still operating.  

Seven U.S. independent refiners are expected to earn 61 cents a share, compared with a loss of $1.32 in the first quarter of 2021, according to Refinitiv's IBES.  

By 2022, gasoline and distillate Silicon Nitride powder.

Introduction to Silicon Nitride Si3N4 Powder
Silicon nitride is a kind of inorganic substance, the chemical formula is Si3N4. The relative molecular mass is 140.28. Gray, white or off-white.
 

Physicochemical Properties of Silicon Nitride Si3N4 Powder
Si3N4 is a high-temperature insoluble compound. It has properties of high-temperature creep resistance. Hexagonal system. Crystals are hexahedral. The density of Si3N4 obtained by the reaction sintering method is 1.8-2.7 g/cm3, and the density of Si3N4 obtained by the hot-pressing method is 3.12-3.22 g/cm3. The Mohs hardness is 9~9.5, Vickers hardness is about 2200, and the microhardness is 32630MPa. The melting point is 1900 (under pressure). It usually decomposes at about 1900 at atmospheric pressure. Specific heat capacity is 0.71J/(g·K). The heat of formation is -751.57kJ/mol. The thermal conductivity is (2-155) W/(m·K). The linear expansion coefficient is 2.8~3.2×10-6/(20~1000). 
Insoluble in water. Soluble in hydrofluoric acid. The temperature at which oxidation begins in the air is 1300~1400. The specific volume resistance is 1.4×105 ·m at 20 and 4×108 ·m at 500. The elastic modulus is 28420~46060MPa. The compressive strength is 490MPa (reaction sintering). At 1285, it reacts with dicalcium diazide to form calcium diazide. At 600, the transition metal is reduced and nitrogen oxides are released. The bending strength is 147MPa. It can be made by heating silicon powder in nitrogen or reacting silicon halide with ammonia. The resistivity is between 10^15-10^16Ω.cm. It can be used as high-temperature ceramic material. 
Except for hydrofluoric acid and hot phosphoric acid, silicon nitride does not react with other inorganic acids and has strong corrosion resistance. 
 

Silicon Nitride Si3N4 Powder Properties
Other Names silicon (IV) nitride, α-Si3N4, SiN, trisilicon tetranitride, Si3N4 powder
CAS No. 12033-89-5
Compound Formula Si3N4
Molecular Weight 140.28
Appearance white to gray powder
Melting Point 1900°C
Boiling Point N/A
Density 2.2-3.5g/cm3
Solubility in H2O insoluble
Exact Mass 139.943

 

Silicon Nitride Si3N4 Powder CAS 12033-89-5
 

 
 

Applications of Silicon Nitride Si3N4 Powder
Silicon nitride ceramic material has the advantages of high thermal stability, high oxidation resistance, and high dimensional accuracy. Because the silicon nitride is the covalent compound with high bond strength, and it will form an oxide film in the air, it has good chemical stability. Silicon nitride is not oxidized below 1200, and a protective film can be formed at 1200~1600 to prevent it from further oxidation. Silicon nitride is not infiltrated or corroded by aluminum, lead, tin, silver, brass, nickel, and many other molten metals or alloys, but can be corroded by magnesium, nickel-chromium alloy, stainless steel, and other molten liquids.
Silicon nitride ceramic materials can be used in high-temperature engineering components, advanced refractory in the metallurgical industry, corrosion-resistant components and sealing components in the chemical industry, machining industry tools, and cutting tools.
Because silicon nitride can form a strong bond with silicon carbide, alumina, thorium dioxide, boron nitride, etc., it can be used as a bond material to modify with different proportions. 
In addition, silicon nitride can be used in solar cells. After the silicon nitride film is plated by the PECVD method, not only can it be used as an antireflection film to reduce the reflection of the incident light, but also, in the deposition process of a silicon nitride film, the hydrogen atom of the reaction product enters the silicon nitride film and silicon wafer, playing a role of passivation defect. The ratio of silicon nitride to silicon nitrogen atoms is not a strict 4:3, but fluctuates within a certain range according to different technological conditions. Different atomic ratios correspond to different physical properties of the film. 
Also, it can be used in ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc. 
 

Main Supplier of Silicon Nitride Si3N4 Powder
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality silicon nitride Si3N4 powder, please feel free to contact us and send an inquiry. ([email protected])

 

Recently, drone giant DJI said it would suspend operations in Russia and Ukraine to ensure its Silicon Nitride powder are expected to continue to be influenced by international geopolitical situations.

Inquiry us

Copper Forgings: Definition, Characteristics and Key Issues in the Production Process

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

High Purity Nano Hafnium Hf powder CAS 7440-58-6, 99%

Metal Alloy 18g/cm3 High Density Tungsten Alloy Ball

Metal Alloy 18.5g/cm3 Polished Tungsten Heavy Alloy Plate

High Purity Molybdenum Boride MoB2 Powder CAS 12006-99-4, 99%

Metal Alloy High Density Tungsten Alloy Rod Grind Surface Tungsten Alloy Bar

High Purity Titanium Sulfide TiS2 Powder CAS 2039-13-3, 99.99%

High Purity Tungsten Silicide WSi2 Powder CAS 12039-88-2, 99%

High Purity Nano Ag Silver powder cas 7440-22-4, 99%

High Purity Chromium Diboride CrB2 Powder CAS 12007-16-8, 99%

High Purity 3D Printing Powder 15-5 Stainless Steel Powder

High Purity Silicon Sulfide SiS2 Powder CAS 13759-10-9, 99.99%

Supply Magnesium Granules Mg Granules 99.95%

High Purity Calcium Nitride Ca3N2 Powder CAS 12013-82-0, 99.5%

High Purity Colloidal Silver Nano Silver Solution CAS 7440-22-4

High Purity Zirconium Nitride ZrN Powder CAS 25658-42-8, 99.5%

High Purity 3D Printing 304 Stainless Steel Powder

Chromium Sulfide Cr2S3 Powder CAS 12018-22-3, 99.99%

Our Latest Products

Copper Forgings: Definition, Characteristics and Key Issues in the Production Process

Copper forgings are forged products made of copper alloy. Due to its excellent electrical conductivity, thermal conductivity, corrosion resistance and accessible processing properties, copper forgings are widely used in many fields such as electrical…

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Germanium Sulfide (GeS2) is a semiconductor compound with the chemical Formula GeS2. It is easily soluble when heated alkali is used, but not in water.Particle size: 100mesh Purity: 99.99% About Germanium Sulfide (GeS2) Powder: Germanium Sulfide…

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

Copper products have good electrical conductivity, thermal conductivity, ductility, corrosion resistance, and wear resistance. They are widely used in electricity, electronics, energy, petrochemical industry. About Metal Alloy 8.92g/Cm3 High Purity…