Modification of surface properties of Ti-16Si-4B powder alloy by plasma immersion ion implantation


Autoria(s): Fernandes, Bruno Bacci; Ueda, Mario; Mello, Carina Barros; Fernandes, Paulino Bacci; Reuther, Helfriecl; Ramos, Alfeu Saraiva
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/05/2011

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Results of the surface modification of Ti-16Si-4B powder alloy by nitrogen ion implantation are presented, together with the experimental description of the preparation of that powder by high-energy ball milling and hot pressing. The phase structure, chemical composition and morphology of sample surfaces were observed by utilizing X-ray diffractometer (XRD), atomic force microscope (AFM) and scanning electron microscopy (SEM). A tribological characterization was carried out with a ball-on-disc tribometer and an SEM. Friction coefficient is compared with the one obtained for Ti-6Al-4V alloy and the wear scars characterized by SEM/EDS (energy dispersive spectroscopy). The concentration profile of the detected elements have been investigated using Auger electron spectroscopy (AES) depth profiling. Our results show that a shallow implanted layer of oxygen and nitrogen ions were obtained at the Ti-16Si -4B alloy surface, sufficient to modify slightly its tribological properties. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.

Formato

693-697

Identificador

http://dx.doi.org/10.1016/j.intermet.2011.01.011

Intermetallics. Oxford: Elsevier B.V., v. 19, n. 5, p. 693-697, 2011.

0966-9795

http://hdl.handle.net/11449/40143

10.1016/j.intermet.2011.01.011

WOS:000289126800013

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Intermetallics

Direitos

closedAccess

Palavras-Chave #Multiphase intermetallics #Tribological properties #Powder metallurgy
Tipo

info:eu-repo/semantics/article