Wear and Corrosion Characteristics of Novel Alumina Coatings Produced by Micro Arc Oxidation on AZ91D Magnesium Alloy
By Tazegul, Onur; Muhaffel, Faiz; Meydanoglu, Onur; Baydogan, Murat; Kayali, E. Sabri & Cimenoglu, Huseyin
Published in Surface and Coatings Technology
NULL
2014
Abstract
Magnesium alloys are attractive materials for reducing the weight of the engineering components. Despite of their high strength to weight ratio, poor corrosion and wear performances limit their extensive usage. In this respect, improvement of their wear and corrosion resistance by coating processes is a necessity for magnesium alloys. In this study, the wear and corrosion performances of AZ91D magnesium alloy have been examined after magnesia and alumina coatings. While micro arc oxidation (MAO) process was applied to generate a magnesia layer, cold spraying (CS) and MAO processes were combined to obtain novel alumina layer. CS was conducted to cover the substrate by depositing an aluminum layer (monolithic or composite). Afterwards, application of MAO process produced an alumina layer on the deposited aluminum layer (monolithic or composite) forming a multi-layered coating on the examined magnesium alloy. Results of the experiments revealed that the alumina layer formed on the alumina reinforced aluminum matrix composite layer ensured superior protection for AZ91D alloy against mechanical and chemical degradations as compared to the magnesia layer.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.