3D, chemical and electrochemical characterization of blasted TI6Al4V surfaces: Its influence on the corrosion behaviour

Abstract

The blasting process to increase the roughness of the surface of metallic biomaterials is widely used. As a consequence, one can produce a renewed surface with different

Corrosion Behavior Analysis of Plasma-assited PVD Coated Ti-6Al-4V alloy in 2 M NaOH Solution

“…R g higher values are related to less porous layers and vice versa 21 . Table 3 summarizes electrochemical impedance values found in other studies about titanium corrosion behavior 23,[30][31][32][33] . Table 3 shows that is very difficult to compare the impedance results with other authors as these results may vary in a wide range.…”

Topography in bio-tribocorrosion

“…These methods, however, alter the surface not only chemically and mechanically, but also topographic ally. The corrosion behaviour and biocompatibility of the system within the tissues are therefore also altered because the phenomenon of adhesion that occurs between the interface of prosthetic material and the surrounding biological environment is directly infl uenced (Anselme et al ., 2000;Barranco et al 2007Barranco et al , 2010Barranco et al , 2011Wennerberg and Albrektsson, 2009). …”

“…During this process, the surface is drastically deformed by the impact of high-energy abrasive particles such as alumina, rutile, SiC, ZrO 2 , SiO 2 and hydroxyapatite. The consequences of a blasting process are an increase in roughness and changes in the chemical composition and physical chemical properties of the surface blasted such as the surface charge (Barranco et al ., 2007(Barranco et al ., , 2010(Barranco et al ., , 2011Wennerberg et al ., 2009). Processes like blasting transform the surface and cause weak points or defects.…”

Superficies Nanoestructuradas de la Aleación Ti6Al4V: Influencia del Tiempo de Electropulido

“…En el presente trabajo se evaluó, solo el efecto del tiempo de electropulido, para una densidad de corriente de 0,30 A/cm 2 . El substrato después de haber sido lijado con lija 600, poseía una rugosidad R a = 0,07 µm y con el incremento a) b) c) del tiempo de electropulimiento hay una tendencia al aumento de la microrugosidad (Ra = 0,11 µm), debido a que el material es una aleación, la disolución puede ser favorecida en algunas micro regiones, por la formación de micro pares galvánicos (Barranco et al, 2007).…”