Aluminum nitride, described as azanylidynealumane in IUPAC nomenclature, is an inorganic compound the aluminum and nitrogen stood for by the chemistry formula AlN <1>. The is no a naturally-occurring compound and also has to be artificially synthesized <2>. The is identified by high thermal conductivity and also electrical resistivity, also as fantastic corrosion resistance <2>.
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Aluminum Nitride Identification | |
| CAS Number | 24304-00-5 <1, 3> |
| PubChem CID | 90455 <1> |
| ChemSpider ID | 81668 <4> |
| ChEBI | CHEBI:50884 <5> |
| EC Number | 246-140-8 <1, 3> |
| RTECS Number | N/A <3> |
| InChI Key | PIGFYZPCRLYGLF-UHFFFAOYSA-N <1> |
Aluminum Nitride Formula
How is Aluminum Nitride Prepared
Its synthesis requires carbothermal palliation of aluminum oxide (Al2O3) using gaseous nitrogen in ~ a temperature that 1400-1700 °C <6>:
Al2O3 + C → Al2O2 + COAl2O2 + 2C + N2 → 2AlN + 2COSintering aids like CaO or Y2O3 room used, and then the mix is hot pressed to create the thick technical-grade material.
Aluminum Nitride Powder
Properties and also Characteristics of Aluminum Nitride
General Properties | |
| Molar Mass/Molecular Weight | 40.989 g/mol <1> |
Physical Properties | |
| Color and Appearance | White to pale yellow powder or paper <3, 4> |
| Melting Point | 2200 °C, 3990 °F <3> |
| Boiling Point | 2517 °C, 4563 °F <3> |
| Density | 2.9-3.3 g cm-3 <3> |
| State of issue at room temperature (solid/liquid/gas) | Solid <3> |
| Solubility | Slightly soluble in mineral acids, decompose in water options containing acids and bases <7> |
| Solubility in Water | Insoluble (monocrystalline form), hydrolyzes (powder form) |
| Thermal Conductivity | 80-200 W/K.m <3> |
| Volume Resistivity | 1010-1016 Ω.cm <8> |
| Dielectric Constant | 9.14 <9> |
| Hardness | 1100 Kg/mm2 <10> |
| Thermal Emissivity (100 °C) | 0.93 <11> |
| Infrared Refractive index (300 K) | 2.1-2.2 (monocrystals and epitaxial films), 1.9-2.1 (polycrystalline films), 1.8-1.9 (amorphous films) <9> |
| Lattice constant (300 K) a and also c | 3.11(1) Å and 4.98(1) Å <9> |
Atomic Properties | |
| Crystal Structure | Wurtzite |
Aluminum Nitride crystal Structure
What is It used for
RF filter in cellphones consist the a microelectromechanical device (MEMS) device, dubbed thin film bar acoustic resonator (FBAR), which provides AlN <13>.A piezoelectric layer of AlN is used in make micromachined ultrasound transducers (MUTs) that have actually applications in velocity sensing, robotics, and medical imaging <14>.Aluminum nitride nanotubes are used as chemical sensors because that detecting toxic gases <15>.See more: Br A 26’ Long Painting Is How Many Yards Long? Painting Is How Many Yards Long?
Aluminum Nitride Ceramic Sheet
Aluminum Nitride Toxicity
Exposure come AlN v mouth, inhalation, or injection may cause bone and also lung toxicity <17>. Repeated exposure deserve to irritate the eyes and also skin <17>.