Abstract
The influence of a metallic nickel-based binder on the structure and properties of the (Ti, Nb)C ceramic material is investigated. The samples are fabricated by technology of SHS forced compaction with the subsequent thermal treatment in a vacuum furnace at 850 °C for 1 h. The composition and structure of fabricated samples are investigated by XPA, SEM, and EDS. Supersaturated solid solutions based on carbide (Ti, Nb)C decompose after annealing with the formation of nanodimensional phases NbCo NbAl in a binder. The β-(Ti, Nb) solid solution is a dispersed phase at a low binder content (5 %), and the (Cr, Al) solid solution—at 20 %. Properties of fabricated materials such as density, porosity, hardness, strength, and heat resistance are determined. A binder decreases the material porosity from 9 to 2 %, which increases the mechanical properties and heat resistance. The dispersion-hardened material of the Ti–Nb–C system with binder contents of 20 and 30 % is recommended for the application as a constructive and functional ceramics.
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Schedule a callMore From: Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Proceedings of Higher Schools. Powder Metallurgy аnd Functional Coatings)
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