Manufacturing of Ti-6%Al and Ti-6%Al-4%V Alloys and Their Corrosion in Sodium Chloride Solutions

被引:14
作者
Abdo, Hany S. [1 ,2 ]
Sherif, El-Sayed M. [1 ,3 ]
El-Serehy, Hamed A. [4 ]
机构
[1] King Saud Univ, CEREM, POB 800, Riyadh 11421, Saudi Arabia
[2] Aswan Univ, Fac Energy Engn, Mech Design & Mat Dept, Aswan 81521, Egypt
[3] Natl Res Ctr, Dept Phys Chem, Electrochem & Corros Lab, El Behoth St 33, Cairo 12622, Egypt
[4] King Saud Univ, Coll Sci, Dept Zool, POB 800, Riyadh, Saudi Arabia
关键词
Ti alloys; ball milling; chronoamperometry; corrosion; EIS; mechanical alloying; TITANIUM-OXIDE FILMS; BEAM MELTING EBM; MECHANICAL-PROPERTIES; ALUMINUM CORROSION; ANODIC-OXIDATION; TI-6AL-4V ALLOY; AL-CU; BEHAVIOR; TI; MICROSTRUCTURE;
D O I
10.3390/cryst10030181
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The current research aims at the manufacturing of Ti-6%Al alloy and Ti-6%Al-4%V alloy using the mechanical alloying method and studying their corrosion behavior after various periods of immersions in 3.5% NaCl solutions. The fabricated alloys were also evaluated using spectroscopic techniques such as X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy analyses. The corrosion behavior was studied using potentiodynamic polarization, electrochemical impedance spectroscopy, and chronoamperometric current-time electrochemical methods. It is confirmed that the presence of 4% V greatly decreases the uniform corrosion of the Ti-6%Al alloy as a result of the role of V in decreasing the cathodic, anodic, and corrosion current, and the rate of corrosion along with increasing the corrosion resistance. Increasing the time of immersion to 24 h and further to 48 h highly decreased the corrosion of the alloys. The presence of 4% V and extending the time of exposure thus increase the resistance against corrosion via decreasing the corrosion of Ti-6%Al alloy in the chloride test solution.
引用
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页数:16
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