Cyclic oxidation resistance of an intermetallic compound TiAl

A multi-step process of oxygen diffusion to improve the wear performance of a gamma-based titanium aluminide

“…This is in agreement with most investigations on the oxidation of titanium aluminides for long times up to 100 h and at temperatures of 600-1100 • C [22][23][24][25][26]. Two nitrides of TiN and Ti 2 AlN were clearly identified in addition to oxides in XRD patterns of oxidized samples.…”

Structural and mechanical evaluation of the effect of oxygen boost diffusion on a gamma based titanium aluminide of Ti–45Al–2Nb–2Mn–1B

“…TiN and Ti 2 AlN are formed in the oxide layers, due to the diffusion of nitrogen through the porous oxide layers. Early investigations have shown the formation of TiO 2 (rutile) and Al 2 O 3 (corundum) on the surface and the creation of TiN and Ti 2 AlN compounds for long time exposure of titanium aluminides to air up to 100 h at temperatures of 600 to 1100°C [27][28][29][30][31].…”

Synthesis, microstructure and properties of Ti–Al porous intermetallic compounds prepared by a thermal explosion reaction

“…The mass gain aer 96 h reached the maximum values of 2.1416 kg m À2 , 1.0298 kg m À2 , 0.3576 kg m À2 , 0.4032 kg m À2 , 0.1851 kg m À2 and 0.2996 kg m À2 (700 C), which corresponded with the specimens with Ti/Al molar ratios of 3 : 1, 2 : 1, 1 : 1, 1 : 2, 1 : 3 and 1 : 3 (furnace temperature of Fig. The larger mass gain in of 3 : 1 and 2 : 1 were ascribed to the redundant titanium aer the TE reaction because the titanium was easily oxidized to form TiO 2 during the oxidation process, 41 which was not benecial to the high temperature oxidation. 700 C), respectively.…”