Research of Modification on Shocked Aluminium Nitride Powder through X-Ray Diffraction

The changes of microstrain and dislocation density caused by shock wave on aluminum nitride ceramic powder have been researched, by X-ray diffraction method the relationship between the microstrain and the size of the crystallite is obtained. According to Warren-Averbch analysis, this means that the size of the coherent scattering region is far smaller than the size of the granula. It demonstrates that the shock wave treatment can generate large amount of crystal lattice defects in aluminum nitride.