Effect of mechanical activation of Ni-Fe-NaCl powder charges in liquid media on the structure and properties of high-porosity materials

It has been established that the time of activation in liquid media (LMA) and the iron content of the charge are of decisive importance in determining the porosity of sintered materials. The authors determined the critical time of treatment for a charge inside a mill (1.5 ksec), this length of treatment ensuring that the transition from LMA to mechanical activation takes place. They also determined the optimum values for the process parameters, making it possible to obtain sintered high-porosity materials (HPM) with the porosity P = 64%.