Combustion of the gasless system Ti + 0.5C in a nitrogen coflow

Combustion of Titanium–Carbon Black High-Energy Ball-Milled Mixtures in Nitrogen: Formation of Titanium Carbonitrides at Atmospheric Pressure

“…At this moment, the sample shows a white glow. A similar multi-step combustion process was observed when granulated Ti+0.5C mixtures were subjected to combustion [21].…”

Effect of hydrogen content in titanium on the structure of the front and the specific features of the combustion of a Ti + 0.5C granular mixture in a cocurrent nitrogen flow

“…The nitrogen pressure at the upper end was 1.5 atm. It should be noted that the change of the brand of titanium in the lower layer of the charge was motivated by the fact that this powder is coarser and contains a smaller amount of hydrogen [4,5] as compared to that used in the present work. This arrangement of the experiment was based on the following views on the combustion process: if the first front is associated with carbidization, then, the ignition of the titanium upon arrival of the first front does not occur.…”

“…The experimental results indicate that by granulating the charge, it is possible to provide combustion in systems with an intense release of impurity gases. The combustion of a Ti + 0.5C granular mixture in a nitrogen flow with the titanium preliminary subjected to thermoevacuation features only one combustion front (as in [4]), which propagates at a velocity of 2.5 cm/s (for the nitrogen pressure at the upper end of 1.5 atm). A typical pattern of the combustion of a granulated titanium-carbon black mixture with the titanium in it subjected to thermoevacuation in the presence of a nitrogen flow is shown in Fig.…”

“…In the present work, we studied the combustion of a granular mixture of titanium with carbon black in a quartz tube, with the charge bed being blown with nitrogen. In contrast to the previous studies [4,5], we used titanium with increased hydrogen content. Interest in studying the laws of the combustion of this system in a nitrogen flow is primarily motivated by the fact that the condensed reaction product formed can be titanium carbonitride TiC 0.5 N 0.5 , which, thanks to its advanced physicochemical properties, such as hardness, modulus of elasticity, and resistance to aggressive environments, is widely used for manufacturing tungsten-free hard alloys and protective coatings [6].…”

Combustion of powdered and granulated Ti + xC mixtures (x = 0.5, 0.75, 1.0) in a coflow of argon and nitrogen gas

“…In our previous studies on combustion of Ti-C mixtures in a flow of nitrogen gas [1], the latter was assumed to act as a neutral gas. On the other hand, Mukasyan et al [2] reported that, under similar conditions, nitrogen gas might take part in SHS reactions as a reagent.…”