Pressure un-assisted reactive powder processing of high-density aluminide composites

Titanium aluminide sheets made using roll bonding and reaction annealing

“…These existing methods for processing g-TiAl sheet materials are also rather expensive [14,15]. Although several studies [16][17][18][19] have investigated reactive processing technique for producing intermetallic compounds and metal-intermetallic composites, most require the application of isostatic pressure during annealing to improve the density. Pressure-less sintering can also give rise to imtermetallic material but with increased porosity.…”

Preparation and characterization of reactively sintered Ni3Al–hBN–Ag composite coating on Ni-based superalloy

“…mental effect [10][11][12], which severely restricts their use as coating materials. For overcoming these detrimental characteristics, one ideal approach is reactive sintering process [13][14][15][16][17][18][19]. This is because reactive sintering process is cost-effective and characterized by reduced intermetallics preparation time, and it is convenient to use reactive sintering process to admix elemental alloying additions [14][15][16] or ceramic reinforcements [17][18][19] into the composite materials for alloying or microstructural control so as to improve the properties of the Ni 3 Al intermetallic compound materials by attendant in situ reaction.…”