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5052 Aluminum Chemical Composition Which Contains

Micro-arc oxidation technology in 5052 aluminum surface situ growth ZrO2-Al2O3 composite ceramic coating by SEM, XRD and nanoindentation instrument ceramic coating microstructure, phase composition, hardness and Young's modulus were analyzed, and to study its thermal shock and high load wear. 5052 aluminum silicate-based electrolyte choice, with micro-arc oxidation ceramic layer on LY12 matrix prepared. By scanning electron microscopy, energy dispersive spectroscopy and other studies of different oxidation time forming component variation and distribution organizations ceramic layer.

     Final test showed that the ceramic coating layer and a dense layer composed of loose components, the surface distribution of large pores; the ceramic coating mainly composed of t-ZrO2, γ-Al2O3 and α-Al2O3 phase, the Vickers hardness and Young's modulus respectively 19.569307.927GPa, about 5052 aluminum plate 8 times and 3 times; in addition, the ceramic coating also has a high thermal shock resistance and abrasion resistance.


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