The effect of C content on the mechanical properties of Ti-Zr coatings
Por:
Rodríguez-Hernández M.G., Jiménez O., Alvarado-Hernández F., Flores M., Andrade E., Canto C.E., Ávila C., Espinoza-Beltrán F.
Publicada:
1 sep 2015
Resumen:
In this study, Ti-Zr and Ti-Zr-C coatings were deposited at room temperature via pulsed-DC magnetron sputtering. A 70Ti-30Zr at% target and a 99.99% graphite plate were used to deposit samples. In order to modify C content, coatings were deposited at different target powers such as 50, 75 and 100. W. Changes on the structure, microstructure and mechanical properties due to C addition were studied. Results indicate that the as-deposited coatings were partly crystalline and that an increment on C content stabilized a' phase and inhibited the appearance of ? precipitates. Therefore, Ti-Zr-C alloys with C>1.9at% showed only a' phase whereas the others alloys exhibited a'+. ? structures. Hardness values from 12.94 to 34.31. GPa were obtained, whereas the elastic modulus was found between 181.84 and 298. GPa. Finally, a high elastic recovery ratio (0.69-0.87) was observed as a function of composition. The overall properties of these coatings were improved due to C content increment, martensitic a' phase and nanocrystalline grain size (10-16. nm). © 2015 Elsevier Ltd.
Filiaciones:
Rodríguez-Hernández M.G.:
Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco, 45100, Mexico
Jiménez O.:
Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco, 45100, Mexico
Alvarado-Hernández F.:
Unidad Académica de Ingeniería I, Universidad Autónoma de Zacatecas, Av. López Velarde 801, Zacatecas, Zacatecas, 98060, Mexico
Flores M.:
Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco, 45100, Mexico
Andrade E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico
Canto C.E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico
Ávila C.:
Centro de Investigación y Estudios Avanzados del I.P.N., Querétaro, Libramiento Norponiente 2000, Querétaro, 76230, Mexico
Espinoza-Beltrán F.:
Centro de Investigación y Estudios Avanzados del I.P.N., Querétaro, Libramiento Norponiente 2000, Querétaro, 76230, Mexico
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