Registration Number
0222U000079,
0121U111882
, R & D reports
Title
Physical and technological principles of hydrogen influence on the material upon biomedical alloys manufacturing
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Head
Dekhtyarenko Volodymyr A., Кандидат технічних наук
Registration Date
02-01-2022
Organization
Institute of Metal Physics. G.V. Kurdyumov of the National Academy of Sciences of Ukraine
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The processes of hydrogen uptake and release by starting materials (titanium sponge, zirconium iodide, niobium and tantalum) have been studied. It was found that among the studied materials, only tantalum is able to absorb and emit hydrogen at room temperature without the use of heat. To stabilize the obtained tantalum hydride at room temperature, it is necessary to use heating to a temperature of 600 ° C under hydrogen pressure. To activate the processes of absorption and release of hydrogen, other investigated elements, it is necessary to use heating.
Also in the work, the kinetics of the synthesis of three-component alloys 52Ti-29,5Zr-18,5Nb at.%, 29,5Ti-52Zr-18,5Nb at.%; and four-component 70Ti-4,8Zr-23,5Nb-1,7Ta at.%, 70Ti-23,5Zr-4,8Nb-1,7Ta at.% were comparatively studied. It was shown that the use of the simplest operations of powder metallurgy for three-component alloys provides chemically and structurally homogeneous materials. It was found that the synthesis of alloys 70Ti-4,8Zr-23,5Nb-1,7Ta and 70Ti-23,5Zr-4,8Nb-1,7Ta is radically different. For the alloy 50Ti-4,8Zr-23,5Nb-1,7Ta, due to the large difference in the diffusion coefficients of the components, achieving homogeneity requires high energy costs, while the alloy 70Ti-23,5Zr-4,8Nb-1,7Ta, as a result Frenkel effect, characterized by high pore content.
Product Description
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Oryshych Denis Viktorovich
Stasiuk Olexander O
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2022-03-09
