Issues »  Volume 41, Issue 2

Solid-Phase Synthesis of Alloys of Zr–Ti–Nb System from Multicomponent Powder Blends

D. V. Oryshych, D. G. Savvakin, O. O. Stasiuk, B. Ya. Melamed

G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 06.09.2018. Download: PDF

Biomedical 59Zr–19Ti–22Nb and 35Zr–40Ti–25Nb (% mass.) alloys having b.c.c. structure are fabricated with cold compaction and vacuum sintering of multicomponent powder blends. Volume effects upon sintering of various powder blends, which contain zirconium hydride, titanium hydride, niobium and hydrogenated niobium as well as Zr–Nb and Ti–Nb master alloy powders, are investigated. The influence of used powders on microstructure of synthesized alloys is determined for the goal of residual porosity reducing. Volume effects upon powder blend heating as well as porosity of alloy fabricated are dependent, first of all, on type of powder used, and on total composition of powder blends. If niobium is introduced as separate powder, diffusion homogenization of such powder blends results in 6–9% porosity due to development of Frenkel effect in sintered alloys. Contrary, application of Zr–Nb and Ti–Nb master alloy powders provides porosity reduction to 2% for both synthesized compositions.

Key words: biomedical alloys, powder blends, hydrogenated powders, sintering, microstructure.

URL: http://mfint.imp.kiev.ua/en/abstract/v41/i02/0213.html

DOI: https://doi.org/10.15407/mfint.41.02.0213

PACS: 61.43.Gt, 61.66.Dk, 61.72.Ff, 62.20.-x, 81.05.Bx, 81.05.Rm, 81.20.Ev

Citation: D. V. Oryshych, D. G. Savvakin, O. O. Stasiuk, and B. Ya. Melamed, Solid-Phase Synthesis of Alloys of Zr–Ti–Nb System from Multicomponent Powder Blends, Metallofiz. Noveishie Tekhnol., 41, No. 2: 213—226 (2019) (in Ukrainian)

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