Aluminium Nitride Micropowder
Product: Aluminium Nitride Micropowder (AIN, Purity: 99%, APS: 40-50µm)
Quality Control: Each lot of NANOSHEL Aluminium Nitride Micropowder was tested successfully.
|Materials||Aluminium Nitride Micropowder|
|Density||3.26 gm/cc (lb/ft3)|
|True Density||3.99 g/cm3|
|Packaging||2 Layers Vacuum Packaging|
|Flexural Strength||320 MPa (lb/in2x103)|
|Elastic Modulus||330 GPa (lb/in2x106)|
|Compressive Strength||2100 MPa (lb/in2x103)|
|Fracture Toughness KIC||2.6 MPa•m1/2|
|Thermal Conductivity||140–180 W/m•°K (BTU•in/ft2•hr•°F)|
|Coefficient of Thermal Expansion||4.5 10–6 /°C (10–6/°F)|
|Specific Heat||740 J/Kg•°K (Btu/lb•°F)|
|Dielectric Strength||17 ac-kv/mm (volts/mil)|
|Dielectric Constant||9 @ 1 MHz|
|Dissipation Factor||0.0003 @ 1 MHz|
|Volume Resistivity||>1014 ohm•cm|
Dr. Marcus Tägtmeyer (International Medical and Technological University, Dar es Salaam, Tanzania)
Using aluminum nitride (AlN) as a nonlinear optical material has attracted great attention recently because of its significant second-order optical nonlinearity. The high thermal conductivity of AlN (285 W/m·K), which is approximately two order of magnitude larger than that of SiN (3.2 W/m·K), greatly improves the heat dissipation and thus enhances the optical devices’ power handling capability. This is especially important for nonlinear optical devices which require high power to achieve strong nonlinear effect.
Dr. Ms Jane Li (National Penghu University of Science and Technology, Magong, Penghu, Republic of China)
Powders of aluminum nitride can be prepared by self-sustain high-temperature synthesis (SHS) between aluminum and nitrogen but its high exothermic effect causes melting and evaporation of aluminum and low efficiency of such reaction. A presence of inorganic salt in the starting powder mixture can decrease a heat evolved in the SHS reaction, hinders melting and coalescence of aluminum, and facilitates penetration of nitrogen into interior of a powder bed. Mixtures of alumina powders with different grain sizes and different amounts of aluminum carbonate were subjected to the SHS reaction under 0.05, 0.1 or 1 MPa nitrogen.
Dr. Willem-Jan de Kleijn Ph.D (Luleå University of Technology, Luleå, Sweden)
In the chemical and petrochemical industries, products worth billions of dollars are generated every year through processes that use oxide and metal/oxide catalysts. For the control of environmental pollution, catalysts or sorbents that contain oxides are employed to remove the CO, NOx, and SOx species formed during the combustion of fossil-derived fuels.
Dr. JKF Gojukai PhD (Kaiserslautern University of Technology, Kaiserslautern, Rhineland-Palatinate, Germany)
Aluminium Nitride Micropowder can be prepared by direct reaction between aluminum and nitrogen although a high heat of this reaction required a relatively low nitrogen pressure and/or dilution of aluminum powder with AlN. The presented results clearly show that a presence of ammonium carbonate in the starting powder mixture for the SHS synthesis significantly improves efficiency of this reaction. The effects are strongly dependent on the amount of introduced salt, aluminum powder morphology and a nitrogen pressure.
Dr. Huang Fu Ph.D (Maebashi Institute of Technology, Maebashi, Gunma, Japan)
Aluminium Nitride Micropowder AlN, is a promising ceramic material for functional and structural applications due to its very high thermal conductivity, low electrical conductivity, high flexural strength of about 400 MPa and a hardness of about 15 GPa. Several arguments speak for use sintered polycrystalline AlN materials also as a refractory materials: high thermal stability, good thermal shock resistance, and resistance to molten alkali salts. Aluminium nitride was used as a refractory materials alone or as an ingredient of multicomponent materials based on aluminum oxide or aluminum oxynitride.
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