抄録
A new process of synthesizing metal and metal nitride powders by spark discharge between two metal electrodes in liquid nitrogen has been studied. In this paper, the phase and shape of the synthesized powders by using titanium (Ti), aluminium (Al) and tungsten (W) electrodes are reported.
In the cases of the same metal electrode couple, titanium nitride (TiN), Al and aluminium nitride (AlN), W and beta-tungsten (β-W) were formed from Ti, Al and W electrodes, respectively. Spherical particles appeared in all the cases. In the cases of different metal electrode couple, the powders were the mixture of particles forming from each electrodes, since the particle compositions were not uniform in BSE images and EDX spectra.
