Effective and Environmentally Friendly Nickel Coating on the Magnesium Alloy

The low density and good mechanical properties make magnesium and its alloys attractive construction materials in the electronics, automotive, and aerospace industry, together with application in medicine due to their biocompatibility. Magnesium AZ91D alloy is an alloy with a high content of aluminu...

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Bibliographic Details
Published in:Metals (Basel ) 2016-12, Vol.6 (12), p.316-316
Main Authors: Škugor Rončević, Ivana, Buzuk, Marijo, Vladislavić, Nives
Format: Article
Language:English
Subjects:
Aerospace industry
Aluminum
Automotive electronics
Avionics
Biocompatibility
chemical deposition
Coated electrodes
Construction materials
Corrosion prevention
Corrosion resistance
Corrosion resistant alloys
Design optimization
Electrochemical analysis
Electrolytes
Intermetallic compounds
Magnesium
magnesium alloy
Magnesium base alloys
Mechanical properties
nickel
Nickel coatings
Protective coatings
self-assembling monolayer
surface modification
Weight reduction
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Summary:The low density and good mechanical properties make magnesium and its alloys attractive construction materials in the electronics, automotive, and aerospace industry, together with application in medicine due to their biocompatibility. Magnesium AZ91D alloy is an alloy with a high content of aluminum, whose mechanical properties overshadow the low corrosion resistance caused by the composition of the alloy and the existence of two phases: α magnesium matrix and β magnesium aluminum intermetallic compound. To improve the corrosion resistance, it is necessary to find an effective protection method for the alloy surface. Knowing and predicting electrochemical processes is an essential for the design and optimization of protective coatings on magnesium and its alloys. In this work, the formations of nickel protective coatings on the magnesium AZ91D alloy surface by electrodeposition and chemical deposition, are presented. For this purpose, environmentally friendly electrolytes were used. The corrosion resistance of the protected alloy was determined in chloride medium using appropriate electrochemical techniques. Characterization of the surface was performed with highly sophisticated surface-analytical methods.
ISSN:2075-4701
2075-4701
DOI:10.3390/met6120316