Cold-spray deposition of Ti2AlC coatings

Ti2AlC coatings have been fabricated by cold-spray deposition. The microstructure evolution as a function of basic spray parameters temperature and pressure onto AA6060 aluminium alloy and 1.0037 steel substrates has been studied. Adherent and dense 50–80 μm thick Ti2AlC coatings were deposited on soft AA6060 substrates under gas temperature and pressure of 600 °C and 3.4 MPa, respectively, whilst comparable results were obtained on harder 1.0037 steel by using higher temperature (800 °C) and pressure (3.9 MPa).

► We use cold gas dynamic spray technology to deposit coatings of MAX-phase Ti2AlC.
► Microstructure evolution has been extensively studied as a function of spray parameters and substrate hardness.
► No MAX-phase deterioration or coating oxidation was observed up to 800 °C process gas temperature.