The composition, structure, and properties of calcium-hydride powder of titanium carbide View Full Text


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Article Info

DATE

2009-06

AUTHORS

A. V. Kasimtsev, V. V. Zhigunov, N. Yu. Tabachkova

ABSTRACT

The technology of obtaining titanium carbide powders by reduction-carbidization of titanium dioxide with calcium hydride and carbide at temperatures up to 1200°C is developed. The dispersity of the TiC particles is determined by thermal desorption and scanning electron microscopy: the average size of crystals is no larger than 1 μm. It is revealed by the methods of coulometry and energy dispersive spectrometry that calcium-hydride titanium carbide is characterized by a high content of bound carbon and a low content (0.01–0.03 wt %) of free carbon. It is established by X-ray structural analysis and transmission electron microscopy that TiC particles are uniform (their composition is close to stoichiometric TiC1.0) and are single crystals. The investigation of the structure and properties of hard alloys of the compositions 60% TiC + 29.6% Ni + 10.4% Mo and 72% TiC + 18.3% Ni and 9.7% Mo, which were obtained on the basis of calcium-hydride titanium carbide powders, showed that they completely satisfy the requirements to tungsten-free hard alloys. More... »

PAGES

276-280

Identifiers

URI

http://scigraph.springernature.com/pub.10.3103/s1067821209030171

DOI

http://dx.doi.org/10.3103/s1067821209030171

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1021278761


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