Corrosion Behavior of Selective Laser Melted Ti-6Al-4V in 0.1 mol/L NaOH Solution
Lei Huang, Shunli Zheng, Yue Qin, Jianyang Han, Yanxin Qiao, Jian Chen
Abstract
In this work, the corrosion behavior of a Ti-6Al-4V alloy prepared using selective laser melting (SLM) in a 0.1 mol/L NaOH solution was studied by means of corrosion electrochemical testing, X-ray diffraction analysis and X-ray photoelectron spectroscopy (XPS), and its corrosion process was compared with the commercially forged Ti-6Al-4V alloy. The results show that the corrosion resistance of the commercially forged Ti-6Al-4V alloy was higher than the SLMed Ti-6Al-4V alloy, which is closely correlated with the presence of more active spots on the alloy surface and more defects in the passive films.
Topics & Concepts
Materials scienceAlloyCorrosionX-ray photoelectron spectroscopySelective laser meltingMetallurgyElectrochemistryDiffractionChemical engineeringMicrostructureOpticsElectrodeChemistryPhysical chemistryEngineeringPhysicsAdditive Manufacturing Materials and ProcessesHydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual Stresses