Interfacial formation of intermetallic Ni-Al-Ti systems formed by induction heating

Intermetallic systems of Nickel (Ni), Aluminium (Al), and Titanium (Ti) are candidates for lightweight materials that offer high-temperature resistance. Combustion synthesis has been widely studied to produce intermetallic coating deposition by exploiting the heat released combustion. An underlayer is often used enhance adhesion substrate. The interaction during heating is, therefore, crucial achieving a good quality. This work aimed investigate microstructure properties interfacial formation across NiAl coatings Ti underlayers formed combustion synthesis. Induction was initiate reaction process with rates 46.6, 57.0, 85.5 K/s. characterized Scanning Electron Microscopy (SEM) equipped an Energy Dispersive Spectroscopy (EDS) detector, whereas phases were identified using X-ray Diffraction (XRD) tests. hardness distribution measured Vickers microhardness test. result shows Al-rich Ni-rich in region. average thickness increases approximately 200, 300, 400 µm rate K/s, respectively. different thicknesses can be attributed migration Ni/Al from zones. observed confirms several Ni-Ti Ti-Al systems. infiltration Ni Al elements sides responsible generating between Ni-Ai-Ti. 2 Ni–Ti 3 rate. coating, interface, rates. K/s results interface 669.1, 804.8, 967.7 HV, 680.1, 772.7, 978.7 increased content Ni-Al-Ti system, which AlNi phases, underlayer. improves understanding second reactions while fabricating apply