Вплив комплексного легування на кінетику розкладу та термічну стабільність механічних сплавів на основі Mg

Abstract

Mechanical alloys (MАs) were synthesized by the method of reactive mechanical alloying. At a hydrogen pressure of 0.1 MPa, with the use of thermal desorption spectroscopy, the thermal stability, the kinetics of hydrogen desorption from the hydride phase MgH 2 of the obtained MAs were studied. It has been established that the complex doping by of Fe, Si, Ti, leads to a significant improvement in the of hydrogen desorption from the hydride phase MgH 2 of MA synthesized by the RMA. Hydrogen capacity C H of MА after reactive grinding for 20 h. was found to be equal to 5.7 % wt. Due to this alloying, the decrease in the thermodynamic stability of MgH 2 is not established. The tested materials showed a high potential as hydrogen storage alloys especially for stationary application.