Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different compos...Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different composition had a great effect on the formation process and nano-pore array structure of alummina film.It was found out that the basic cause of such effect was the difference of the crystal defect density of aluminum matrix.展开更多
Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in...Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in self-assembling process not only affects the current density occuring in anodization, but also the nano-pore order. Dislocation leads to the differences of the energy of Al and the speed of Al 3+ forming in dislocation and non-dislocation. Dislocation was also in close relation with the acidity of the electrolyte used. The stronger the acidity of the electrolyte, the greater the influence of the dislocation.展开更多
Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged na...Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged nanopore arrays have been observed by scanning electron microscope（SEM） in the AAM templates fabricated at diffenent voltages.And voltages have effects on diameter,density and distribution of nanopores in AAMS.展开更多
文摘Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different composition had a great effect on the formation process and nano-pore array structure of alummina film.It was found out that the basic cause of such effect was the difference of the crystal defect density of aluminum matrix.
文摘Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in self-assembling process not only affects the current density occuring in anodization, but also the nano-pore order. Dislocation leads to the differences of the energy of Al and the speed of Al 3+ forming in dislocation and non-dislocation. Dislocation was also in close relation with the acidity of the electrolyte used. The stronger the acidity of the electrolyte, the greater the influence of the dislocation.
文摘Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged nanopore arrays have been observed by scanning electron microscope（SEM） in the AAM templates fabricated at diffenent voltages.And voltages have effects on diameter,density and distribution of nanopores in AAMS.
