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It is predicted that the cubic zinc blend phase of AlN (zb-AlN) can exhibit superconductivity at high pressures.
AlN has high thermal conductivity, high-quality MOCVD grown AlN single crystal has an intrinsic thermal conductivity of 321 W/(m·K), consistent with a first-principle calculation.  For an electrically insulating ceramic, it is 70-210 W/(m·K) for polycrystalline material, and as high as 285 W/(m·K) for single crystals).
Stability and chemical properties
Aluminium nitride is stable at high temperatures in inert atmospheres and melts about 2200 °C. In a vacuum, AlN decomposes at ~1800 °C. In the air, surface oxidation occurs above 700 °C, and even at room temperature, surface oxide layers of 5-10 nm thickness have been detected. This oxide layer protects the material up to 1370 °C. Above this temperature bulk oxidation occurs. Aluminium nitride is stable in hydrogen and carbon dioxide atmospheres up to 980 °C.
AlN is synthesized by the carbothermal reduction of aluminium oxide in the presence of gaseous nitrogen or ammonia or by direct nitridation of aluminium. The use of sintering aids, such as Y2O3 or CaO, and hot pressing is required to produce a dense technical grade material.
AlN is also used to build piezoelectric micromachined ultrasound transducers, which emit and receive ultrasound and which can be used for in-air rangefinding over distances of up to a meter.
Metallization methods are available to allow AlN to be used in electronics applications similar to those of alumina and beryllium oxide. AlN nanotubes as inorganic quasi-one-dimensional nanotubes, which are isoelectronic with carbon nanotubes, have been suggested as chemical sensors for toxic gases.
^Vandamme, Nobuko S.; Richard, Sarah M.; Winzer, Stephen R. (1989). "Liquid-Phase Sintering of Aluminum Nitride by Europium Oxide Additives". Journal of the American Ceramic Society. 72 (8): 1409-1414. doi:10.1111/j.1151-2916.1989.tb07662.x.
^Ahmadi, A; Hadipour, NL; Kamfiroozi, M; Bagheri, Z (2012). "Theoretical study of aluminium nitride nanotubes for chemical sensing of formaldehyde". Sensors and Actuators B: Chemical. 161 (1): 1025-1029. doi:10.1016/j.snb.2011.12.001.