【摘要】：目的探究Al-5%Cu合金硬質(zhì)陽極氧化處理的最佳工藝。方法采用硬質(zhì)陽極氧化試驗裝置對Al-5%Cu合金進行硬質(zhì)陽極氧化處理,并用掃描電鏡和顯微硬度計研究了在硫酸電解液中生成的硬質(zhì)陽極氧化膜的微觀組織結(jié)構(gòu)、厚度及硬度。綜合采用正交試驗以及人工神經(jīng)網(wǎng)絡(luò)的方法,設(shè)計了三因素三水平的實驗方案,研究了硫酸溶液溫度、電流密度和陽極氧化時間對硬質(zhì)陽極氧化膜的硬度及膜層厚度的影響。利用人工神經(jīng)網(wǎng)絡(luò)系統(tǒng)對Al-5%Cu合金陽極氧化的工藝參數(shù)進行了優(yōu)化。結(jié)果采用硬質(zhì)陽極氧化技術(shù)可以增加Al-5%Cu合金的表面硬度。制備的氧化膜厚度較均勻,表面質(zhì)量較好,硬度較高。硫酸溶液的溫度是影響表面氧化膜層微觀組織及硬度的主要因素。結(jié)論 Al-5%Cu合金進行硬質(zhì)陽極氧化的最佳工藝條件范圍為:氧化液溫度-9~-7℃,電流密度4~4.8 A/dm2,氧化時間115~120 min。
[Abstract]:Objective to study the optimum process of hard anodizing treatment of Al-5%Cu alloy. Methods the hard anodized Al-5%Cu alloy was treated by hard anodizing test device. The microstructure of the hard anodized film formed in sulfuric acid electrolyte was studied by scanning electron microscopy and microhardness tester, and the microstructure of hard anodized film formed in sulfuric acid electrolyte was studied by scanning electron microscope (SEM) and microhardness tester. Thickness and hardness. An experimental scheme of three factors and three levels was designed by means of orthogonal test and artificial neural network. The effects of sulfuric acid solution temperature, current density and anodizing time on the hardness and thickness of hard anodized film were studied. The process parameters of anodic oxidation of Al-5%Cu alloy were optimized by using artificial neural network system. Results the surface hardness of Al-5%Cu alloy can be increased by hard anodizing technology. The thickness of the oxide film prepared is uniform, the surface quality is better, and the hardness is higher. The temperature of sulfuric acid solution is the main factor affecting the microstructure and hardness of surface oxidation film. Conclusion the optimum technological conditions for hard anodizing of Al-5%Cu alloy are as follows: the temperature of oxidation solution is-9 ~ 7 鈩，

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