Evaluation of Corrosion Behavior of Ni/Be-free Titanium-Based Metallic Glasses Fabricated by Vacuum Arc Melting Method

Lotfi, Behnam

doi:10.22068/ijmse.4174

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‎ 10.22068/ijmse.4174

Evaluation of Corrosion Behavior of Ni/Be-free Titanium-Based Metallic Glasses Fabricated by Vacuum Arc Melting Method

Behnam Lotfi

Abstract: (27 Views)

Bulk titanium-based metallic glass with amorphous structure has led to the creation of special properties, which can be used as a suitable alternative to metallic biomaterials with crystalline structure. In the present study, bulk titanium-based metallic glass without Ni and Be elements produced by vacuum arc melting and cast into a 4 mm diameter mold. The evaluation of the results showed that the Ti₅₀Zr₁₅Cu₂₀Mo₇Ag₄Sn₃Si₁ metallic glass has a composite structure of dispersed crystalline phases (α-Ti, β-Ti and Ti₂Cu) in a glassy field. However, the Ti₅₀Zr₂₅Cu₅Mo₁₀Ag₆Sn₃Si₁alloy has a higher glass formation ability (GFA) and the crystalline phases formed in the Ti₅₀Zr₁₅Cu₂₀Mo₇Ag₄Sn₃Si₁ alloy disappeared with increasing the amount of alloying elements Zr, Mo and Ag. The corrosion current (I_Corr) of the Ti₅₀Zr₂₅Cu₅Mo₁₀Ag₆Sn₃Si₁ alloy (43.28 nA) was lower compared to the corrosion current of the Ti50Zr15Cu20Mo7Ag4Sn3Si1 and Ti6Al4V samples (133.9 and 92.41 nA, respectively) in Hank's solution, hence the Ti₅₀Zr₂₅Cu₅Mo₁₀Ag₆Sn₃Si₁ alloy showed better corrosion resistance.

Keywords: Keyword: Ti-Bulk metallic glasses, Glass formation ability, Corrosion behavior

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Type of Study: Research Paper | Subject: Casting Processes and Solidification Phenomena