Kinetics of thermal relaxation of cold sintered amorphous powder of 82Ni18P

Abstract

Metodom merenja električnog otpora u neizotermskim i izotermskim uslovima ispitan je proces termičke stabilizacije hladnosinterovanog amorfnog praha 82Ni18P. Pokazano je da se proces kristalizacije, praćen daljim sređivanjem strukture, odigrava stupnjevito u temperaturnom intervalu od 623 do 723 K. Merenjem promene električnog otpora na konstantnim temperaturama T1 = 613, T2 = 633 i T3 = 653 K određeni su kinetički parametri procesa stabilizacije strukture ispitivanih uzoraka. Utvrđeno je da svaki stupanj kristalizacije prati odgovarajuće smanjenje električnog otpora.

The process of thermal stabilization of cold sintered amorphous powder of 82Ni18P was studied using the method of measuring the electrical resistance in non-isothermal and isothermal conditions. It was shown that the process of crystallization followed by further structural arrangement occurs in stages in the temperature interval from 623 to 723 K. By measuring the change in electrical resistance at constant temperatures, T1 = 613, T2 = 633 and T3 = 653 K, the kinetic parameters of the process of structural ordering of the evaluated substance were found. It was shown that every stage of crystallization is followed by a decrease in electrical resistance.