To provide convenience for the translation among specimens, orthogonal experimental method was used to research the relationship between geometrical dimensions （length, width and thickness） and total elongation of p...To provide convenience for the translation among specimens, orthogonal experimental method was used to research the relationship between geometrical dimensions （length, width and thickness） and total elongation of polycarhonate sheet, and simulations of tensile specimens with different geometrical dimensions had been conduc- ted by the finite element method, then regression analysis method was used to create the relationship formula be- tween geometrical dimensions and total elongation. It was found that： the shorter the length of specimen is, the better the plasticity is, and they had the power exponent relationship; the larger the width and thickness are, the better the plasticity is, and they had the direct proportion relationship with the total elongation.展开更多
Highly ordered arrays of binary Co 55 Ni 45 alloy nanorods with Co 55 Ni 45 morphology were prepared by direct current electro-deposition using polycarbonate（PC） membrane template.The transmission electron microscop...Highly ordered arrays of binary Co 55 Ni 45 alloy nanorods with Co 55 Ni 45 morphology were prepared by direct current electro-deposition using polycarbonate（PC） membrane template.The transmission electron microscope and scanning electron microscope observations revealed conical morphology of the nanorods.The two ends of nanorod arrays had diameters of 200 nm and 320 nm, respectively,and the nanorod arrays could be as long as 6～7 μm. The diameter of nanorod arrays depended strongly on pore diameter in PC membrane and the lengths were decided by plating parameters such as voltage, pH value, plating time and other deposition parameters. The magnetic properties and mechanism of crystals nucleation and growth in binary Co55Ni45 alloy nanorod arrays were also studied.展开更多
基金Sponsored by the National Natural Science Foundation of China (Grant No. 50675044)the Heilongjiang Provincial Natural Science Foundation Key Program (Grant No. ZD200811)
文摘To provide convenience for the translation among specimens, orthogonal experimental method was used to research the relationship between geometrical dimensions （length, width and thickness） and total elongation of polycarhonate sheet, and simulations of tensile specimens with different geometrical dimensions had been conduc- ted by the finite element method, then regression analysis method was used to create the relationship formula be- tween geometrical dimensions and total elongation. It was found that： the shorter the length of specimen is, the better the plasticity is, and they had the power exponent relationship; the larger the width and thickness are, the better the plasticity is, and they had the direct proportion relationship with the total elongation.
文摘Highly ordered arrays of binary Co 55 Ni 45 alloy nanorods with Co 55 Ni 45 morphology were prepared by direct current electro-deposition using polycarbonate（PC） membrane template.The transmission electron microscope and scanning electron microscope observations revealed conical morphology of the nanorods.The two ends of nanorod arrays had diameters of 200 nm and 320 nm, respectively,and the nanorod arrays could be as long as 6～7 μm. The diameter of nanorod arrays depended strongly on pore diameter in PC membrane and the lengths were decided by plating parameters such as voltage, pH value, plating time and other deposition parameters. The magnetic properties and mechanism of crystals nucleation and growth in binary Co55Ni45 alloy nanorod arrays were also studied.
