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AlN synthesis by carbothermal reduction involves heat-treating aluminum oxide or aluminum hydroxide at 1400 1800 °C under a nitrogen or ammonia gas stream in the presence of carbon as a reducing agent.2 − 7 − In this method, the heat treatment is carried out under an oxygen or air stream to remove residual carbon in a temperature range of 600 80...
1 kwi 2017 · Carbothermic reduction of aluminium oxide and direct aluminium nitridation are two widely used methods for hexagonal aluminium nitride synthesis in industry [60], [61], as well as actual research directions in the field of nitride preparation [62], [63].
23 maj 2013 · The starting material for creating the majority of aluminum nitride objects is AlN powder. AlN powder may be used for creating not only compacted material, but also composite materials on a polymer or inorganic base using AlN as a modifier.
29 kwi 2024 · Hybrid treatment combines an electrochemical process involving the removal of the aluminum oxide layer from the substrate, its subsequent iron plating, and a further gas nitriding in high-purity ammonia.
By using the barrel nitriding process, an aluminum nitride layer with high thickness can be formed within a matter of hours, and the surface hardness can be improved by using the plasma nitriding.
The reaction process usually takes place at lower temperature. For AlN powder, the reaction process is found during oxidation in temperatures ranging from 550 to 1100 °C [8,10,14,16]. For bulk specimens, the reaction process is found in the temperature interval from 1000 to 1390 °C [7,9,11–13, 15].
Annealing heat treatment has been proved by the previous researcher to be the best method to improve the microstructure of Aluminium Nitride thin films. Hence, this method is applied at four different temperatures for two hour.
