RT Generic
T1 Max-phase slurry coatings for high temperature oxidation protection of ti based alloys
A1 García Colón, María
AB It is a well-known fact that degradation of materials due to phenomena such as oxidation,corrosion or wear may result in early deterioration of a material. This deterioration can turnout to be very expensive in industries such as the Aerospace one, where the price of a piececan reach soaring figures and where the unexpected failure of a component can resultcatastrophic.Titanium is a material widely used in the aerospace industry thanks to its good mechanicalproperties (high strength, low density and excellent corrosion resistance); however one of itsdrawbacks is its poor oxidation resistance at high temperatures. The purpose of this project isto be able to provide titanium with a coating capable of allowing it to improve its oxidationresistance.MAX phases on the other hand are relatively new materials with a Mn+1AXn stochoimetry,where M is a metal, A is an A-group element and X is N or C. They are layered crystallinecompounds with a hexagonal structure. These ternary phases are characterized by havingextraordinary physical, chemical and mechanical properties related with their nanolayeredstructure. Among their properties their excellent high-temperature mechanical properties andtheir oxidation resistance makes them quite promising.In this project, the slurry coating method has been used to develop the coatings, using as adonor material MAX-phases on Ti-6Al-4V alloy.The reasons for choosing this alloy is that it is the most used titanium alloy in the Aerospacesector. The samples were to be coated using two different kinds of MAX-phase slurries: Ti3SiC2and Ti2AlC, respectively. The slurry diffusion treatment of the samples was carried out atdifferent temperatures. Subsequently, samples were oxidized in static air at 600℃ for 300hours. Characterization of the samples was performed by X-ray diffraction and Scanningelectron Microscopy.
YR 2014
FD 2014
LK https://hdl.handle.net/10016/22664
UL https://hdl.handle.net/10016/22664
LA eng
DS e-Archivo
RD 17 jul. 2024