Study on Nitridation Behavior of Mg-Ca Alloy under Nitrogen

Xiao Xia Yang; Dun Qiang Tan; Dong Fei Xiao; Yi Jie Zhan

doi:10.4028/www.scientific.net/AMR.415-417.1127

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Study on Nitridation Behavior of Mg-Ca Alloy under...

Study on Nitridation Behavior of Mg-Ca Alloy under Nitrogen

Abstract:

To study the ignition-proof behavior in the spray deposited magnesium alloy with nitrogen as atomizing gas, SEM and XRD were employed to study the morphology and elements profile of nitride film formed on the Mg-5Ca alloy melt in different conditions, and the ignition proof principle was also analyzed preliminarily. The results indicated that under ordinary nitrogen (99.5%), a layer of smooth and continuous nitride film was formed on the surface of Mg-5Ca alloy after sintered at 740°C for 2 hours, and with the increasing of temperature and holding time, small cracks and cavities appeared locally on the surface film. The surface film was mainly composed of CaO、MgO、Ca₃N₂ and Mg₃N₂.The profile analysis of the nitride film indicated that Ca element collected on the surface of the nitride film, and a multiple film was formed which filled the loose and holes of single film, avoided the burning of Mg alloy during spray forming process.

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Periodical:

Advanced Materials Research (Volumes 415-417)

Pages:

1127-1131

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.415-417.1127

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Online since:

December 2011

Authors:

Xiao Xia Yang, Dun Qiang Tan, Dong Fei Xiao, Yi Jie Zhan

Keywords:

Mg-Ca Alloy, Nitridation Behavior, Spray Deposition, Surface Film

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