Synthesis of Al2O3/Ti/TiN Functional Graded Materials by Means of Nitriding in Salts of Al2O3/Ti Composites
The synthesis of Al2O3/Ti/TiN functional graded material (FGM) through the nitriding in salts of previously Al2O3-10 vol. % Ti fabricated composites was studied. The matrix for the preparation of the FGM is formulated of an Al2O3-based composite that presents a homogeneous dispersion of very fine metallic titanium particles. After nitriding process, microstructural observations were carry out on the transversal zone of the materials’ surface showing the presence of a very thin film of about 37 µm of a constituent that was identified as TiN. Micro-hardness measurements performed from the surface to the core of the FGM confirm an increment on the hardness near the material’s surface.
J. Federico Chávez Alcalá, Alejandro Cruz Ramírez and Ma. de los Ángeles Hernández Pérez
J. G. Miranda-Hernández et al., "Synthesis of Al2O3/Ti/TiN Functional Graded Materials by Means of Nitriding in Salts of Al2O3/Ti Composites", Materials Science Forum, Vol. 691, pp. 58-62, 2011