In vitro corrosion performance of PEO coated Ti and Ti6Al4V used for dental and orthopaedic implants
作者： E. Matykina , R. Arrabal , B. Mingo , M. Mohedano , A. Pardo
DOI: 10.1016/J.SURFCOAT.2016.08.018
关键词: Materials science 、 Simulated body fluid 、 Plasma electrolytic oxidation 、 Vanadium 、 Nuclear chemistry 、 Metallurgy 、 Fluoride 、 Alloy 、 Titanium 、 Corrosion 、 Titanium alloy
摘要: Abstract The present work describes the characteristics of 5–10 μm-thick plasma electrolytic oxidation (PEO) coatings with graded Ca/P ratio generated on titanium commercial grades I (c.p. Ti) and V (Ti6Al4V) some aspects their bioactivity corrosion resistance in vitro long-term (up to 8 weeks) normal short-term (1 week) inflammatory conditions. Simulated body fluid (SBF) artificial saliva at 37 °C were used as corrosive media; conditions simulated by controlling pH introducing hydrogen peroxide (usual metabolism product inflammation-inducing bacteria). Additionally, was modified fluoride ions. DC AC electrochemical tests characterize protection mechanism coatings. Metal ion release (Ti 4 + , Al 3 + 5 + ) from PEO coated materials during immersion SBF evaluated ICP-MS. Ti6Al4V alloy inhibited liberation compared non-coated both conditions; but aluminium vanadium greater than conditions, due presence these ions PEO-coated c.p. Ti exhibited considerably higher stability respect all Ti6Al4V.
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