Corrosion Properties of Ceramic-Based TiO2 Films on Plasma Oxidized Ti6Al4V/316L Layered Implant Structured Manufactured by Selective Laser Melting

被引：51
作者：
Tekdir, Hilmi [1 ]
Yetim, Tuba [2 ]
Yetim, Ali Fatih [1 ]
机构：
[1] Erzurum Tech Univ, Fac Engn & Architecture, Dept Mech Engn, TR-25050 Erzurum, Turkey
[2] Erzurum Tech Univ, Fac Engn & Architecture, Dept Chem Engn, TR-25050 Erzurum, Turkey
来源：
JOURNAL OF BIONIC ENGINEERING | 2021年 / 18卷 / 04期
关键词：
selective laser melting; layered structure; Ti6Al4V; 316L; plasma oxidizing; TiO2; corrosion; STAINLESS-STEEL; SOL-GEL; MECHANICAL-PROPERTIES; WEAR PERFORMANCE; TI-6AL-4V ALLOY; TITANIUM-ALLOYS; AISI; 316L; BEHAVIOR; MICROSTRUCTURE; RESISTANCE;
D O I：
10.1007/s42235-021-0055-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Selective Laser Melting (SLM), one of the metal additive manufacturing methods in the powder bed, is frequently used in the production of 316L stainless steel biomaterial. In this study, the effect of duplex surface modification (metal additive manufacturing and plasma oxidizing) on the corrosion resistance of 316L was investigated. Ti6Al4V layer was formed by additive manufacturing on 316L produced by selective laser melting method. The obtained layered Ti6Al4V/316L samples were oxidized by plasma at 650 degrees C-750 degrees C and 1 h-4 h parameter conditions. TiO2 ceramic layer was formed on the Ti6Al4V/316L structure by plasma oxidation process in several layer thicknesses. Corrosion properties of the TiO2 layer were determined by Open Circuit Potential (OCP), potentiodynamic polarization, and Electrochemical Impedance Spectroscopy (EIS) tests in Simulated Body Fluid (SBF) solution. Also, the surface characterizations of the samples were determined by the Vickers micro-hardness tester, Scanning Electron Microscopy (SEM), and X-Ray Diffractometer (XRD) analysis. From the results, it was obtained that the corrosion resistance of the plasma oxidized was higher than the untreated 316L and layered Ti6Al4V/316L samples. The best corrosion resistance was obtained under the 750 degrees C and 4 h parameter conditions because of the increasing plasma oxidizing time and temperature.
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页码：944 / 957
页数：14
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