Registration Number
0224U032070,
(0123U103625)
, R & D reports
Title
Physical and technological principles of creating hydrogen-absorbing composite materials based on the Ti-Zr-Mn alloy with magnesium
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Фізико-технологічні засади створення воднесорбційних композиційних матеріалів на основі стопу системи Ti–Zr–Mn з магнієм
Head
Dekhtiarenko Volodymyr A., Доктор технічних наук
Registration Date
23-07-2024
Organization
Dekhtiarenko Volodymyr A.
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The purpose of the work is to develop the physical and technological principles of creating metal composite materials with increased hydrogen capacity or improved hydrogenation kinetics for safe storage and transportation of hydrogen in a bound state (metal hydrides).
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The investigation of the interaction of the obtained composites with hydrogen was carried out using a method that was as close as possible to real operating conditions. At the first stage, the pressed composite was heated at an initial pressure of 0.0002 MPa to a temperature of 400 ± 10 °C, while hydrogen was released from hydrides based on the Ti15.5Zr30Mn38V5.5Сr5.5Со5.5 alloy. Such heating made it possible not only to create excess pressure in the chamber at the level of 0.1-0.13 MPa, but also to obtain atomic hydrogen at the contact boundary of magnesium-hydride particles. At the second stage, the resulting pressure was lowered to the initial value (from 0.1 to 0.0002 MPa) with subsequent cooling of the sample to room temperature. This is done in order to simulate the real working conditions of the studied materials. In which case, all the hydrogen that was released will be used, and accordingly, the cooling of the composite will not take place under hydrogen pressure, but in a vacuum. At the third stage, when the sample reached room temperature, an excess pressure of 0.23 MPa was created in the chamber in order to re-saturate the alloy with hydrogen. Three cycles of sorption-desorption were carried out for each of the investigated compositions, this did not affect the integrity of the pressing. Long-term preservation of the integrity of the synthesized composite is a necessary condition for the possibility of magnesium saturation with hydrogen under the specified technological regimes.
Product Description
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Dekhtyarenko Volodymyr A.
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2024-07-23
