Electrochemical impedance study of corrosion properties of AA 5356 3D-printed by electron beam melting

2019 ◽  
Author(s):  
V. R. Utyaganova ◽  
N. N. Shamarin ◽  
A. A. Eliseev
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Electrochemical Impedance ◽  
Corrosion Properties ◽  
Impedance Study ◽  
3D Printed

Mechanical and corrosion properties of AlCoCrFeNi high-entropy alloy fabricated with selective electron beam melting

2018 ◽  
Vol 23 ◽  
pp. 264-271 ◽  
Author(s):  
Kosuke Kuwabara ◽  
Hiroshi Shiratori ◽  
Tadashi Fujieda ◽  
Kenta Yamanaka ◽  
Yuichiro Koizumi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
High Entropy Alloy ◽  
Corrosion Properties ◽  
High Entropy ◽  
Selective Electron Beam Melting ◽  
Mechanical And Corrosion Properties

Long-term osseointegration of 3D printed CoCr constructs with an interconnected open-pore architecture prepared by electron beam melting

2016 ◽  
Vol 36 ◽  
pp. 296-309 ◽  
Author(s):  
Furqan A. Shah ◽  
Omar Omar ◽  
Felicia Suska ◽  
Anders Snis ◽  
Aleksandar Matic ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Pore Architecture ◽  
3D Printed

scholarly journals Mitigating Corrosion Effects of Ti-48Al-2Cr-2Nb Alloy Fabricated via Electron Beam Melting (EBM) Technique by Regulating the Immersion Conditions

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 889
Author(s):  
Hany S. Abdo ◽  
Ubair Abdus Samad ◽  
Jabair Ali Mohammed ◽  
Sameh A. Ragab ◽  
Asiful H. Seikh
Keyword(s):  
Electron Beam ◽  
Corrosion Behavior ◽  
Electron Beam Melting ◽  
Tial Alloy ◽  
Electrochemical Impedance ◽  
Corrosion Current ◽  
Solution Temperature ◽  
Good Resistance ◽  
Bulk Alloy ◽  
Cyclic Potentiodynamic Polarization

The corrosion behavior of newly fabricated γ-TiAl alloy was studied using electrochemical impedance spectroscopy (EIS) and cyclic potentiodynamic polarization (CPP) techniques. The γ-TiAl alloy was produced from powder with compositions of Ti-48Al-2Cr-2Nb processed using electron beam melting (EBM) technique. The corrosion behavior of the bulk alloy was investigated in 1 M HCl solution for different immersion times and temperatures. The experimental results suggest that the fabricated alloy exhibits good resistance to corrosion in acid solution at room temperature. The results also indicate that with an increase in immersion time and solution temperature, the corrosion potential (Ecorr) shifts to a higher positive value, resulting in an increase in corrosion current (jcorr) and consequently a decrease in the corrosion resistance (Rp) of the alloy.

Tribological Properties of Three-Dimensionally Printed Ti–6Al–4V Material Via Electron Beam Melting Process Tested Against 100Cr6 Steel Without and With Hank's Solution

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
N. W. Khun ◽  
W. Q. Toh ◽  
X. P. Tan ◽  
E. Liu ◽  
S. B. Tor
Keyword(s):  
Electron Beam ◽  
Tribological Properties ◽  
Electron Beam Melting ◽  
Surface Hardness ◽  
Melting Process ◽  
Martensitic Structure ◽  
Mechanical And Tribological Properties ◽  
3D Printed ◽  
Electron Beam Melting Process ◽  
Hank’S Solution

Three-dimensionally (3D) printed Ti–6Al–4V (Ti64) samples via an electron beam melting (EBM) process were developed to investigate their microstructure and mechanical and tribological properties in comparison with those of commercial Ti64 samples. The 3D-printed Ti64 samples had a heavily twinned and acicular martensitic structure that was responsible for their higher surface hardness than that of the commercial Ti64 samples. The 3D-printed Ti64 samples tested against a 100Cr6 steel counter ball without and with Hank's solution had a higher wear resistance associated with their higher surface hardness than the commercial Ti64 samples. The use of Hank's solution during sliding reduced the wear of the both Ti64 samples as a result of the lubricating effect of the solution. It could be concluded that the 3D-printed Ti64 samples in this study had comparable mechanical and tribological properties to those of the commercial Ti64 samples.

Electrochemical Impedance Characteristics of Sintered 7075 Aluminum Alloy Under Ssrt Condition

2013 ◽  
Vol 58 (2) ◽  
pp. 505-508 ◽  
Author(s):  
S. Sunada ◽  
N. Nunomura
Keyword(s):  
Aluminum Alloys ◽  
Complex Shape ◽  
Electrochemical Impedance ◽  
Ingot Metallurgy ◽  
View Point ◽  
Corrosion Properties ◽  
Electrochemical Tests ◽  
Impedance Characteristics ◽  
Polarization Test ◽  
Conventional Ingot

Powder metallurgy (P/M) process has the advantage of better formability to fabricate complex shape products without machining and welding. And recently this P/M process has been applied to the production of aluminum alloys. The P/M aluminum alloys thus produced also have received considerable interest because of their fine and homogeneous structure. Many papers have been published on the mechanical properties of the aluminum alloys produced by P/M process while there have been few on their corrosion properties from the view point of electrochemistry. In this experiment, therefore, two kinds of 7075 aluminum alloys prepared by the conventional ingot metallurgy (I/M) process and P/M process were used, I/M material is commercially available. and their corrosion behavior were investigated through the electrochemical tests such as potentiodynamic polarization test, slow rate strain tensile (SSRT) test and electrochemical impedance spectroscopy (EIS) measurement under SSRT test in the corrosion solution and the deionized water.

Assessing Porosity in Selective Electron Beam Melting Manufactured Ti–6Al–4V by Nonlinear Impact Modulation Spectroscopy

2020 ◽  
Vol 39 (4) ◽  
Author(s):  
Jan Kober ◽  
Alexander Kirchner ◽  
Alena Kruisova ◽  
Milan Chlada ◽  
Sigrun Hirsekorn ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Modulation Spectroscopy ◽  
Selective Electron Beam Melting

scholarly journals Application of Commercial Surface Pretreatments on the Formation of Cerium Conversion Coating (CeCC) over High-Strength Aluminum Alloys 2024-T3 and 7075-T6

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 930
Author(s):  
Juan Jesús Alba-Galvín ◽  
Leandro González-Rovira ◽  
Francisco Javier Botana ◽  
Maria Lekka ◽  
Francesco Andreatta ◽  
...  
Keyword(s):  
Electrochemical Impedance ◽  
Salt Spray ◽  
Aluminum Matrix ◽  
Optical Emission ◽  
High Strength ◽  
Chemical Conversion ◽  
Conversion Coating ◽  
Neutral Salt ◽  
Corrosion Properties ◽  
Surface Pretreatment

The selection of appropriate surface pretreatments is one of the pending issues for the industrial application of cerium-based chemical conversion coatings (CeCC) as an alternative for toxic chromate conversion coating (CrCC). A two-step surface pretreatment based on commercial products has been successfully used here to obtain CeCC on AA2024-T3 and AA7075-T6. Specimens processed for 1 to 15 min in solutions containing CeCl3 and H2O2 have been studied by scanning electron microscopy coupled with energy-dispersive X-ray analysis (SEM-EDX), glow discharge optical emission spectroscopy (GDOES), potentiodynamic linear polarization (LP), electrochemical impedance spectroscopy (EIS), and neutral salt spray (NSS) tests. SEM-EDX showed that CeCC was firstly observed as deposits, followed by a general coverage of the surface with the formation of cracks where the coating was getting thicker. GDOES confirmed an increase of the CeCC thickness as the deposition proceed, the formation of CeCC over 7075 being faster than over 2024. There was a Ce-rich layer in both alloys and an aluminum oxide/hydroxide layer on 7075 between the upper Ce-rich layer and the aluminum matrix. According to LP and EIS, CeCC in all samples offered cathodic protection and comparable degradation in chloride-containing media. Finally, the NSS test corroborated the anti-corrosion properties of the CeCC obtained after the commercial pretreatments employed.

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