Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1459561 | Ceramics International | 2016 | 7 Pages |
In this paper, Aluminum nitride (AlN) nanoparticles from solid state reaction of diaminomaleonitrile (DN) with aluminum (Al) are synthesized by plasma assisted high energy ball milling (p-milling). The structure and morphology of the p-milling products are characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier Transform infra red (FT-IR), Differential scanning calorimetry and Thermal gravimetry (DSC–TG). The XRD results show a correlation between milling time and crystallite size, lattice distortion, specific surface area, and conversion rate of AlN. About 90% AlN has been obtained and specific surface area can reach 52 m2 g−1 at p-milling 14 h. The FT-IR measurements show the solid reaction starts with the deammoniation of DN molecules, followed by the formation of AlN powder as the main solid products after p-milling 8 h. The DSC–TG results indicate that DN starts to disintegrate from 180 °C to 450 °C by the elimination of the N–H and C≡N groups, continue increasing temperature leads to the formation of AlN at 673 °C. The activation energy of reaction from p-milling Al and DN mixture is calculated by the Kissinger equation and is about 353.5 kJ/mol. Meanwhile, the formation mechanism of AlN in a p-milling process is also investigated.