The Growth Mechanism of MgO in the ZnO Coated Mg2B2O5 Whisker Reinforced AZ31B Composite

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Abstract:

In this paper, the growth mechanism of MgO in the as-cast ZnO coated Mg2B2O5 whisker reinforced AZ31B composite. The elements distribution of interfacial vicinity are analyzed by electron probe microanalysis (EPMA) and microstructures of MgO and MgZn2 are observed by transmission electron microscope (TEM). The crystallographic orientation relationship between the Mg2B2O5 and MgO in the ZnO coated Mg2B2O5 whisker reinforced AZ31B composite is investigated to be [010]Mg2B2O5 // [011]MgO and (102)Mg2B2O5//(111 )MgO. The formation of intermetallic phase MgZn2 is discussed.

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Advanced Materials Research (Volumes 415-417)

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25-29

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December 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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