Silicon Nitride (Si3N4) has good high temperature strength, creep resistance and oxidation resistance. In addition, its low thermal expansion coefficient gives good thermal shock resistance compared with most ceramic materials. Silicon nitride is produced in two main ways; Reaction bonded silicon nitride (RBSN), and hot pressed silicon nitride (HPSN) and sintered silicon nitride (SSN). RBSN is made by direct reacting compacted silicon powder with nitrogen, and produces a relatively low-density product compared with hot pressed and sintered silicon nitride, however the process has only a small volume change allowing net shape forming. The HPSN and SSN material is made with sintering aids and offers better physical properties suitable for more demanding applications. Typical Silicon Nitride applications include: Bearing balls and rollers Cutting tools Valves, turbocharger rotors for engines Turbine blades Glow plugs Molten metal handling Thermocouple sheaths Welding jigs and fixtures Welding nozzles Advantages 1.High hardness 2.Wear resistance 3.High fire resistance 4.Corrosion preventive 5.Good chemical stability
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Silicon Nitride is a kind of advanced ceramic material with high hardness, stable structure, small thermal expansion coefficient, excellent oxidation resistance and corrosion resistance, which integrates excellent thermal and chemical properties. Main purpose: It is mainly used in metallurgical industry, mechanical industry, chemical industry, semiconductor, aviation, atomic energy and other industries, medical artificial joints, and all-ceramic engines. Items Nano-Si3N4 phase content (%) amorphous chemical component N(wt%) 38.5 38.5 38.5 O(wt%) 1.25 1.25 1.25 C(wt%) 0.2 0.2 0.2 Fe(ppm)
Product name:silicon nitride Place of origin:hebei, china Brand name:ledphor Molecular formula:si3n4 Cas no.:12033-89-5 Purity:99.9% Appearance:white powder Particle size:d50
Place of Origin Henan, China Brand Name GUOHAN Model Number Si3N4 Shape Lump Material Silicon Chemical Composition Si3N4 N Si Ca O C Al Fe Purity High Purity Packaging Details 1Metric Ton/Big Bag or As customers' Requirement
MF: Si3N4 Chemical Name: Silicon Nitride Powder Purity: > 99.99% APS: 40-50 µm (Size Customization possible) Form Micro powder CAS Number 12033-89-4
Product Description Welded steel gas cylinders from our company are made of excellent steel plates and designed , manufactured and inspected according with GB5100, GB17673. Also they are conformity with some international standard such as ISO,DOT,BS,JIS,DIN,TUV and so on. Our cylinder can be refilled with various kinds of low pressure liquid gas such as liquid Cl2, anhydrous ammonia, sulfur dioxide, freon, ethylene etc. they are widely applied in many industries department such as chemical industries, medical, pesticide, metallurgy, paper manufacturing, rubber, plastic, textile, printing and dyeing, food, water purification, light industry, electricity, fire-fighting and so on. Ammonia is a colorless gas. It may be compressed and cooled to a colorless liquid. Ammonia is the compound formed by the chemical combination of the gaseous elements nitrogen and hydrogen. Ammonia is a highly reactive chemical, forming ammonium salts in reactions with inorganic and organic acids. Industrial ammonia is used for a wide variety of applications in varying quantities. Product Name Ammonia Chemical Formula NH3 Hazard Class 2.3 Molecular Weight 17.031 Boiling Point (C) -33.43 Boiling Point (F) -241.17 UN 1005 Density(kg/m³) 0.728 Density(lb/ft³) 0.044 Process: Industrial ammonia is purified by a filter into the electronic grade ultra-high purity ammonia. Annual output of ultra-high purity ammonia gas is 10,000 tons. Application: Ammonia(NH3)is used in 1. metal treating operations as nitriding, carbo-nitriding, bright annealing, furnace brazing, sintering, sodium hydride descaling, atomic hydrogen welding, and other applications where protective atmospheres are required 2. hydrogenation of fats and oils as a convenient source of hydrogen 3.manufacturing of alkalis, ammonium salts, dyes, pharmaceuticals, cuprammonium rayon, and nylon 4. rubber industry for stabilization of raw latex to prevent coagulation during transportation and torage 5. as a catalyst in the phenol-formaldehyde condensation and also in the urea-formaldehyde condensation to make synthetic resin 6.produce proteins and can be used to improve the protein content of low quality hay 7.semiconductor industry 8.production of blue and white LEDs (Light Emitting Diods) 9.In the field of novel optoelectronic materials, it is an important base material for GAN preparation by MOCVD technology.High purity ammonia or the preparation of nitrogen trifluoride, silicon nitride, the basic material, is the production of super high nitrogen raw gas.In addition, liquid ammonia is widely used in the semiconductor industry, the metallurgical industry, as well as other industries and scientific research that need to protect the atmosphere.
In order to remove hydrogen in the aluminum liquid, the Silicon Nitride Ceramic hollow degassing rotor is used to feed nitrogen or argon, and the gas is dispersed by high-speed rotation,finally achieve the effect of neutralizing and discharging hydrogen. ï?¬Compared with graphite rotor, Silicon Nitride Ceramic will not be oxidized under high temperature environment, so it will not pollute the aluminum liquid, and the service life is much longer; ï?¬The property of high thermal shock resistance ensures that the degassing rotor will not break during frequent intermittent operation; Because Silicon Nitride Ceramic is of high density and high strength, it assures that degassing rotor can be reliable and stable in high speed rotation.
Nitride Chemicals: Zirconium Nitride, Chromium Nitride Powder, FeCrN Powder,Titanium Nitride powder, Vanadium Nitride Powder / Vanadium-Nitrogen Alloy, FeVN powder, Manganese Nitride Powder, FeMnN powderï¼?SiMnN powderï¼?Aluminium Nitride Powder, Silicon Nitride Powder,Boron Nitride powder and so on.
