摘要
The parameters for the electro-deposition of Cu were optimized in order to increase the compressive properties of close cell aluminum. Different values of deposition voltages and times were considered to vary the amount of deposited Cu. The surface morphology of the coating was observed by SEM and the compressive properties were evaluated by MTS. The results show that the coating is more homogeneous and compact with increasing voltage in a certain range, and beyond which, the coating quality decreases apparently. The reason is dedicated to the discharge rate of Cu2+ and nucleus formed in unit time. The compression results show three experienced stages: elastic deformation stage, collapse deformation stage and densification stage. After the electro-deposition of Cu, the elasticity modulus is increased obviously and the platform stress is also increased. Under the same strain, the stress of the aluminum foam with coating is reinforced comparing with the aluminum foam without coating. Furthermore, the platform area is widened apparently. In addition, Cu-SiC nanocomposite coatings are electrodeposited in alumium foams for further improving the mechanical characterization.
The parameters for the electro-deposition of Cu were optimized in order to increase the compressive properties of close cell aluminum. Different values of deposition voltages and times were considered to vary the amount of deposited Cu. The surface morphology of the coating was observed by SEM and the compressive properties were evaluated by MTS. The results show that the coating is more homogeneous and compact with increasing voltage in a certain range, and beyond which, the coating quality decreases apparently. The reason is dedicated to the discharge rate of Cu2+ and nucleus formed in unit time. The compression results show three experienced stages: elastic deformation stage, collapse deformation stage and densification stage. After the electro-deposition of Cu, the elasticity modulus is increased obviously and the platform stress is also increased. Under the same strain, the stress of the aluminum foam with coating is reinforced comparing with the aluminum foam without coating. Furthermore, the platform area is widened apparently. In addition, Cu-SiC nanocomposite coatings are electrodeposited in alumium foams for further improving the mechanical characterization.
作者
XU Yiku
YANG Lei
SONG Xuding
CHEN Yongnan
PENG Xuan
CHEN Yunzhou
HAO Jianmin
LIU Lin
徐义库;YANG Lei;SONG Xuding;CHEN Yongnan;PENG Xuan;CHEN Yunzhou;HAO Jianmin;LIU Lin(School of Material Science and Engineering,Chang'an University,Xi'an710064,China;Key Laboratory of Road Construction Technology and Equipment,MOE,Chang'an University,Xi'an710064,China;State Key Laboratory of Solidification and Processing,Northwestern Polytechnical University,Xi'an 710072,China)
基金
Funded in Part by the Fundamental Research Funds for the Central Universities(Nos.300102318205,310831161020,310831163401)
the National Natural Science Foundation of China(No.51301021)
the China Postdoctoral Science Foundation(No.2016M592730)
the Innovation and Entrepreneurship Training Program of Chang’an University(No.201610710084)
the Fund of the State Key Laboratory of Solidification and Processing in Northwestern Polytechnical University(No.SKLSP201302)
