Effect of Dispersity and High Pressure Sintering Temperature of Titanium Diboride on Its Physical and Mechanical Properties

Урбанович, В. С.; Kapylou, Andrei V.; Jaworska, L.; Klimczyk, Piotr

doi:10.1142/9789814280365_0057

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2016

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“…Interest to the given object of investigation was aroused by a number of causes. Titanium nitride is a refractory compound with a high hardness, low electric resistance, and good thermal stability [1] [3]. It can be used as a cutting tool and electro-conducting material operating at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Obtaining at High Pressure the TiN-TiB<sub>2</sub> Ceramic Nano-Composite

Bykov¹,

Власова²,

Aguilar³

et al. 2016

MSA

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The process of consolidation of TiN nanopowders under a hydrostatic pressure of 3 GPa was evaluated from the evolution of substructure parameters of compacts obtained after different exposure of powder bodies under constant pressure at room temperature. It has been established that in compaction, changes in the substructure reflect deformation processes of the porous body, which are accompanied by relaxation processes and the corresponding decrease in microstresses. The sintering of consolidated 80 wt% TiN -20 wt% TiB 2 powders at 3 GPa in the temperature range 1300˚C -1600˚C leads to the substitution of N atoms by B atoms in TiN and possibly to the substitution of B atoms by N atoms in TiB 2 . The presence of oxygen in powders promotes the formation of titanium oxynitride, which increases the microhardness of specimens.

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Section: Introductionmentioning

confidence: 99%