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THE INFLUENCE OF THE COMPOSITION AND PARTICLE SIZE OF STARTING TITANIUM HYDRIDE POWDERS ON THE CONSOLIDATION OF TITANIUM UNDER SINTERING

I.Ivanova,
 
N.Krylova,
 
A.Demidik,
 
V.Barabash,
 
M.Karpets
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2019, #01/02
http://www.materials.kiev.ua/article/2786

Abstract

The influence of starting powder composition, milling conditions, and sintering temperature on the mechanism of material compaction under sintering, the degree of porosity, and the formation of titanium microstructure has been studied. It has been established that the compaction of titanium from titanium hydride is completely determined by the specific surface of the starting powders and may reach 40–45%. The internal structure of the material does not have a considerable effect. On the contrary, the intensity of titanium powder sintering is rather low (10–12%) and determined by the initial titanium crystal lattice since no noticeable refinement of the powder is observed even under the most intensive milling.


POWDER, POWDER SINTERING MECHANISMS, POWDER TITANIUM ALLOYS, TITANIUM HYDRYDE

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