AIN/AINMo Nanoceramic Studies

AIN is covalent compound, belonging to the hexagonal crystal and fiber sphalerite structure, white or gray, density 3.26 g/cm2, without melting point, in 2200℃- 2250℃sublimation of decomposition, hot hardness high, even before the decomposition temperature not softened deformation. It has excellent thermal shock resistance. In addition, it has excellent electrical insulating and dielectric properties.AlN ceramics by X-ray diffraction spectra and found that nano-ceramic containing hexagonal phase and the cubic phase AlN. By scanning electron microscopy and spectroscopy analysis, we know AlN ceramics samples elements and samples surface of the situation. The Al and N is mainly the element. Its diameter is 50 nm and the small nanoparticles combining in a closely together. This can be determined it is the nano-ceramic. After further analysis by transmission electron microscopy observation of the surface morphology of the samples is very small size of nanoparticles. Nano-Mo AlN nano ceramic use the same methods and analysis.It a rough compare with AlN. AT Nano-Mo AlN ceramics we found nanocrystalline biger on the surface and the nanoparticles integrate more closely. Finally, the AlN \ nano-Mo AlN ceramic is respectively hardness measured, they are respectively 4232.1 HV, 3165.9 HV.