In Situ Al/Al2O3 Composite Coating on Steel Substrate Prepared by Mechanical Alloying at High Temperature

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In this study a new technique for producing an Al/Al2O3 composite coating on a steel substrate by an in situ process was examined. The pre-treating of the steel substrate with Al was carried out by MA at room temperature, followed by MA using a low-energy ball mill at 200-500°C. An Al/Al2O3 coating layer with a homogenous distribution of Al2O3 particles were achieved. The coating layer has not only high hardness but also high fracture toughness.

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582-585

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February 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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