目的：探究微弧氧化电解液中纳米α-Al2 O3的浓度对铝合金微弧氧化膜层组织和性能的影响。方法在硅酸盐体系电解液中加入15 g / L 纳米α-Al2 O3,微弧氧化获得不同的陶瓷膜层,对膜层的微观结构、厚度、硬度和耐腐蚀性能进行分析。结果...目的：探究微弧氧化电解液中纳米α-Al2 O3的浓度对铝合金微弧氧化膜层组织和性能的影响。方法在硅酸盐体系电解液中加入15 g / L 纳米α-Al2 O3,微弧氧化获得不同的陶瓷膜层,对膜层的微观结构、厚度、硬度和耐腐蚀性能进行分析。结果膜层的主要组成相为α-Al2 O3、γ-Al2 O3和 SiO2。当纳米α-Al2 O3添加量为3 g / L 时,膜层表面微裂纹少,孔隙率小,厚度达70μm,硬度为513HV,耐腐蚀性能好。结论硅酸盐电解液中加入纳米α-Al2 O3,能够改善铝合金微弧氧化膜层的综合性能。展开更多
The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morph...The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morphology of the thin films were characterized by XRD, UV Vis and AFM analysis methods. The XRD results revealed that the nano crystal with (104) preferential orientation has been formed on glass substrate. The UV Vis spectra showed that the nano particulate films obtained from Fe 2 O 3 aqueous colloidal sols are well transferred to glass substrate at dip coating rate of 80 mm/min. The α Fe 2 O 3 particles are ellipsoidal shaped, with particle size of about 5～7 nm. The multilayer films exhibited high sensitivity to ethanol vapor at room temperature.展开更多
研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确...研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确定氧化工艺,新工艺拓展氧化温度的范围（15～40°C）。制备具有高度有序的氧化铝模板和TiO2/Al2O3复合纳米结构。展开更多
文摘目的：探究微弧氧化电解液中纳米α-Al2 O3的浓度对铝合金微弧氧化膜层组织和性能的影响。方法在硅酸盐体系电解液中加入15 g / L 纳米α-Al2 O3,微弧氧化获得不同的陶瓷膜层,对膜层的微观结构、厚度、硬度和耐腐蚀性能进行分析。结果膜层的主要组成相为α-Al2 O3、γ-Al2 O3和 SiO2。当纳米α-Al2 O3添加量为3 g / L 时,膜层表面微裂纹少,孔隙率小,厚度达70μm,硬度为513HV,耐腐蚀性能好。结论硅酸盐电解液中加入纳米α-Al2 O3,能够改善铝合金微弧氧化膜层的综合性能。
文摘The α Fe 2 O 3 sol was prepared by a sol gel method from FeCl 3 ·6H 2 O. Thin nano particulate films of the α Fe 2 O 3 were deposited on glass substrate by dip coating sol gel technique. The structure and morphology of the thin films were characterized by XRD, UV Vis and AFM analysis methods. The XRD results revealed that the nano crystal with (104) preferential orientation has been formed on glass substrate. The UV Vis spectra showed that the nano particulate films obtained from Fe 2 O 3 aqueous colloidal sols are well transferred to glass substrate at dip coating rate of 80 mm/min. The α Fe 2 O 3 particles are ellipsoidal shaped, with particle size of about 5～7 nm. The multilayer films exhibited high sensitivity to ethanol vapor at room temperature.
文摘研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确定氧化工艺,新工艺拓展氧化温度的范围（15～40°C）。制备具有高度有序的氧化铝模板和TiO2/Al2O3复合纳米结构。
