Films of VC and NbC of about 200 nm thickness were electron beam deposited on the sandblasted surface of metallic Ti substrates, preheated at 350 and 500 °C, to improve the surface hardness of Ti implants intended for application in orthopaedics. According to both standard angular-dispersive X-ray diffraction measurements and rocking curve analysis performed by energy-dispersive X-ray diffraction, the films were found to be textured preferentially along the (200) crystallographic direction. The (200)-oriented crystallites are randomly rotated around their growth axes, with no correlation among adjacent domains. The measured intrinsic hardness of the films is 24-25 GPa for VC and 18-21 GPa for NbC. © 2007 Elsevier B.V. All rights reserved.
Electron beam deposited VC and NbC thin films on titanium: Hardness and energy-dispersive X-ray diffraction study / D., Ferro; J. V., Rau; Amanda, Generosi; V., Rossi Albertini; Latini, Alessandro; S. M., Barinov. - In: SURFACE & COATINGS TECHNOLOGY. - ISSN 0257-8972. - 202:10(2008), pp. 2162-2168. [10.1016/j.surfcoat.2007.09.008]
Electron beam deposited VC and NbC thin films on titanium: Hardness and energy-dispersive X-ray diffraction study
LATINI, ALESSANDRO;
2008
Abstract
Films of VC and NbC of about 200 nm thickness were electron beam deposited on the sandblasted surface of metallic Ti substrates, preheated at 350 and 500 °C, to improve the surface hardness of Ti implants intended for application in orthopaedics. According to both standard angular-dispersive X-ray diffraction measurements and rocking curve analysis performed by energy-dispersive X-ray diffraction, the films were found to be textured preferentially along the (200) crystallographic direction. The (200)-oriented crystallites are randomly rotated around their growth axes, with no correlation among adjacent domains. The measured intrinsic hardness of the films is 24-25 GPa for VC and 18-21 GPa for NbC. © 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
