论文部分内容阅读
The MAO (Micro-Arc Oxidation) process is applied to a eutectic Al-Si alloy (Al-12.0%Si-1.0%Cu-0.9%Mg (mass fraction)). The oxide ceramic layer was fabricated with about 220 (J.m thickness and 3000 Hv micro-hardness. By XRD (X-ray diffractometry) and DSC (differential scanning calorimetry) analyses, the oxide layer consists of amorphous A12O3, which is distinct from the results reported by the other researchers. The SEM photographs of such layer show that the layer is fixed tightly on the substrate alloy. So this alloy can be used in the high temperature and friction environment after it is treated with such process.
The MAO (Micro-Arc Oxidation) process is applied to a eutectic Al-Si alloy (Al-12.0% Si- 1.0% Cu- 0.9% Mg fraction). The oxide ceramic layer was fabricated with about 220 By XRD (X-ray diffractometry) and DSC (differential scanning calorimetry) analyzes, the oxide layer consists of amorphous A12O3, which is distinct from the results reported by the other researchers. The SEM photographs of such layers show that the layer is fixed tightly on the substrate alloy. So this alloy can be used in the high temperature and friction environment after it is treated with such process.