Three-dimensional（3D） ZnO nanorods with good adsorption property was successfully fabricated via a facile hydrothermal method, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Ener...Three-dimensional（3D） ZnO nanorods with good adsorption property was successfully fabricated via a facile hydrothermal method, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Energy Dispersive X-ray spectrometer（EDX） and a UV-vis spectrophotometer. It was found that the ZnO nanorods with a diameter of 0.5 μm and the length of 10 μm were firmly grown on the struts of the open-cell aluminum foams, and the 3D hierarchical structured adsorbent Zn O nanorods/Al foam（r-ZnO/AF） exhibits a higher adsorption capacity for Brilliant Blue R（BBR） in aqueous solutions, more stable sorption regenerable behavior and solid–liquid separability in contrast to the corresponding n-ZnO powder sample. The kinetics of the adsorption process was also discussed.展开更多
在SHPB装置上对渗流法制备的通孔泡沫铝进行了动态压缩实验，研究了相对密度为0．341～0.419的通孔泡沫铝在10^-3～2000s^-1应变率范围内的压缩响应特征和应变率相关性，并用扫描电镜（scanning electron microscope，SEM）分析了泡沫...在SHPB装置上对渗流法制备的通孔泡沫铝进行了动态压缩实验，研究了相对密度为0．341～0.419的通孔泡沫铝在10^-3～2000s^-1应变率范围内的压缩响应特征和应变率相关性，并用扫描电镜（scanning electron microscope，SEM）分析了泡沫铝的压缩变形特征。实验结果表明，通孔泡沫铝有明显应变率效应，随应变率上升，泡沫铝流动应力提高。SEM观察结果揭示，在动态压缩下，通孔泡沫铝宏观上均匀变形．微观变形机制以泡孔横向伸展坍塌为主。展开更多
The aluminum open cell foams have been prepared by the conventional precision casting method to investigate the thermal and acoustic properties.A water heating system and silencers were organized as a first step for i...The aluminum open cell foams have been prepared by the conventional precision casting method to investigate the thermal and acoustic properties.A water heating system and silencers were organized as a first step for its applications.The temperature increase between the top and bottom of the foam became larger as the cell size increased in the heat transfer measurement.Sound absorption ratio of the close cell foams was 60%-100%, whereas the open cell aluminum foam showed only 10%-20% of sound absorption at low frequency.When the prototype electric water heater manufactured by combining aluminum open cell foam with a heater was heated to 100-400℃,the highest temperature of water was in the range of 16-46~C.This suggests that there could be potential for this type of heater to be used as a commercial electric water heater.Sound silencer made with the aluminum open cell foam was applied to exit of exhaustion side at air pressure line.Sound silencing effect of open-celled aluminum foam showed that the noise level went down by introducing smaller cell size foam.展开更多
An open-cell aluminum foam filled with silicate rubber (AFFSR) was fabricated by infiltration of the liquid silicate rubber into the open-cell aluminum foam. The experiments were carried out to investigate the compres...An open-cell aluminum foam filled with silicate rubber (AFFSR) was fabricated by infiltration of the liquid silicate rubber into the open-cell aluminum foam. The experiments were carried out to investigate the compressive behavior and energy absorption characteristics of the material. It is found that the stress—strain response of the AFFSR exhibits five regions including two plateau regimes, which is quite different from the stress—strain curves of many unfilled metallic foams that usually exhibit three distinct regions. The plastic deformation of the AFFSR is prolonged because of the filled silicate rubber, compared with the aluminum foam without such a filler. The AFFSR also exhibits a higher energy capacity than the aluminum foam without filler. Additionally, for the prolonged plateau region in the stress—strain curve, the energy absorption efficiency of the AFFSR maintains a high level (above 0.6) over a wide strain range from 3% to 60%.展开更多
基金supported by the National Natural Science Foundation of China(Nos.51371167 and 51301168)the Natural Science Foundation of Anhui Province(No.1508085ME99)Key Science and Technology Program of Anhui Province of China(No.1604a0902173)
文摘Three-dimensional（3D） ZnO nanorods with good adsorption property was successfully fabricated via a facile hydrothermal method, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Energy Dispersive X-ray spectrometer（EDX） and a UV-vis spectrophotometer. It was found that the ZnO nanorods with a diameter of 0.5 μm and the length of 10 μm were firmly grown on the struts of the open-cell aluminum foams, and the 3D hierarchical structured adsorbent Zn O nanorods/Al foam（r-ZnO/AF） exhibits a higher adsorption capacity for Brilliant Blue R（BBR） in aqueous solutions, more stable sorption regenerable behavior and solid–liquid separability in contrast to the corresponding n-ZnO powder sample. The kinetics of the adsorption process was also discussed.
文摘在SHPB装置上对渗流法制备的通孔泡沫铝进行了动态压缩实验，研究了相对密度为0．341～0.419的通孔泡沫铝在10^-3～2000s^-1应变率范围内的压缩响应特征和应变率相关性，并用扫描电镜（scanning electron microscope，SEM）分析了泡沫铝的压缩变形特征。实验结果表明，通孔泡沫铝有明显应变率效应，随应变率上升，泡沫铝流动应力提高。SEM观察结果揭示，在动态压缩下，通孔泡沫铝宏观上均匀变形．微观变形机制以泡孔横向伸展坍塌为主。
文摘The aluminum open cell foams have been prepared by the conventional precision casting method to investigate the thermal and acoustic properties.A water heating system and silencers were organized as a first step for its applications.The temperature increase between the top and bottom of the foam became larger as the cell size increased in the heat transfer measurement.Sound absorption ratio of the close cell foams was 60%-100%, whereas the open cell aluminum foam showed only 10%-20% of sound absorption at low frequency.When the prototype electric water heater manufactured by combining aluminum open cell foam with a heater was heated to 100-400℃,the highest temperature of water was in the range of 16-46~C.This suggests that there could be potential for this type of heater to be used as a commercial electric water heater.Sound silencer made with the aluminum open cell foam was applied to exit of exhaustion side at air pressure line.Sound silencing effect of open-celled aluminum foam showed that the noise level went down by introducing smaller cell size foam.
文摘An open-cell aluminum foam filled with silicate rubber (AFFSR) was fabricated by infiltration of the liquid silicate rubber into the open-cell aluminum foam. The experiments were carried out to investigate the compressive behavior and energy absorption characteristics of the material. It is found that the stress—strain response of the AFFSR exhibits five regions including two plateau regimes, which is quite different from the stress—strain curves of many unfilled metallic foams that usually exhibit three distinct regions. The plastic deformation of the AFFSR is prolonged because of the filled silicate rubber, compared with the aluminum foam without such a filler. The AFFSR also exhibits a higher energy capacity than the aluminum foam without filler. Additionally, for the prolonged plateau region in the stress—strain curve, the energy absorption efficiency of the AFFSR maintains a high level (above 0.6) over a wide strain range from 3% to 60%.
