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采用微弧氧化技术在不同Mn含量的铝合金门窗表面进行了改性处理,研究了基体合金元素Mn对表面陶瓷层膜厚、显微硬度、形貌和物相的影响,并分析了其作用机理。结果表明,随着微弧氧化时间的增加,含0.5%Mn和含1.5%Mn的铝合金试样的表面陶瓷层厚度和显微硬度都表现为逐渐增加的趋势,且在相同的微弧氧化时间内,含1.5%Mn的铝合金试样的表面陶瓷层厚度更大、显微硬度更低。Mn含量为0.5%的铝合金表面陶瓷层中有γ-Al_2O_3相和少量α-Al_2O_3相,而Mn含量为1.5%的铝合金表面陶瓷层中只有γ-Al_2O_3相。
The micro-arc oxidation technology was used to modify the surface of aluminum alloy doors and windows with different Mn contents. The effect of matrix alloy element Mn on the film thickness, microhardness, morphology and phase of the ceramic coating was studied. mechanism. The results show that with the increase of micro-arc oxidation time, the surface ceramic layer thickness and microhardness of 0.5% Mn and 1.5% Mn-containing aluminum alloy samples show an increasing trend, and in the same micro-arc oxidation Time, 1.5% Mn-containing aluminum alloy specimen surface ceramic layer thickness greater, lower microhardness. The surface of the aluminum alloy with 0.5% Mn contained γ-Al_2O_3 phase and a small amount of α-Al_2O_3 phase, while the Mn layer with 1.5% Mn had only γ-Al_2O_3 phase in the ceramic layer.