Electrochemical Impedance Characteristics of Sintered 7075 Aluminum Alloy Under Ssrt Condition

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 intere...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2013-06, Vol.58 (2), p.505-508
Main Authors: Sunada, S, Nunomura, N
Format: Article
Language:English
Subjects:
Alloys
Aluminum alloys
Aluminum base alloys
Corrosion
Corrosion products
Corrosion rate
Corrosion tests
Deionization
Electrochemical impedance spectroscopy
Electrochemistry
Electrode polarization
Electrodes
Grain boundaries
Homogeneous structure
Machining
Mechanical properties
Metallurgical analysis
Metallurgy
Personal computers
Powder metallurgy
Sintering (powder metallurgy)
Spectrum analysis
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Description
Summary: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.
ISSN:1733-3490
2300-1909
DOI:10.2478/amm-2013-0027