Effect of Different Ca Content on Microstructure and Electrochemical Performance of As-Cast AZ31 Magnesium Alloy Sacrificial Anodes

Hong Wei Cui; Ting Bin Li; Xiao Hong Du; Hong Wei Ding; Guang Hui Min

doi:10.4028/www.scientific.net/AMM.431.42

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 431Effect of Different Ca Content on Microstructure...

Effect of Different Ca Content on Microstructure and Electrochemical Performance of As-Cast AZ31 Magnesium Alloy Sacrificial Anodes

Abstract:

The effect of ca on the as-cast microstructure and electrochemical performance of AZ31 anode was investigated. The results show that addition of Ca to AZ31 anodes can result in not only grain refinement, but also a change in both morphology and volume fraction of the second phases. And grain refinement by Ca addition can be explained by the GRF mechanism. 0.4%Ca addition to as-cast AZ31 anode can increase the effective current capacity and current efficiency, and meet the requirements of magnesium sacrificial anode, but open circuit potential is lower than the nation standards. AZ31-0.4Ca anode will have a broad marketing application prospect.

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Periodical:

Applied Mechanics and Materials (Volume 431)

Pages:

42-47

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.431.42

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Online since:

October 2013

Authors:

Hong Wei Cui, Ting Bin Li, Xiao Hong Du, Hong Wei Ding, Guang Hui Min*

Keywords:

Electrochemical Performance, Magnesium Alloy, Sacrificial Anode

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