| 块体多孔金属镍的逐层扫描喷射电沉积制备 |
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| 引用本文： | 宫凯,黄因慧,田宗军,刘志东,王桂峰. 块体多孔金属镍的逐层扫描喷射电沉积制备[J]. 材料工程, 2009, 0(8) |
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| 作者姓名： | 宫凯 黄因慧 田宗军 刘志东 王桂峰 |
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| 作者单位： | 南京航空航天大学,江苏省精密与微细制造技术重点实验室,南京,210016 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 介绍了基于喷射电沉积的逐层扫描法制备块状多孔金属镍的原理,利用该工艺在自行研制的试验装置上制备块状多孔金属镍.利用电子扫描显微镜(SEM)对多孔金属镍块状试样的表面形貌、微观组织结构及孔隙率进行检测,对表面显微硬度和压缩性能进行测试.结果表明:多孔金属镍样品的多孔层由向上生长的枝状晶围成三维连通孔隙,通孔分布均匀致密.经SEM分析铸层表面,可见枝状晶分支由菜花状的晶胞叠加生长形成.使用加工电流密度为900A/dm2时,制备的块状样品孔隙率为61.5%.表面的显微硬度HV为330.5.压缩性能的检测结果表明,多孔金属的抗压屈服极限为11.85MPa.应力曲线存在一个很宽的塑性平台,具有典型的塑性多孔材料特征.
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| 关 键 词： | 多孔金属 枝状晶 喷射电沉积 显微硬度 压缩性能 |
Research on Technological Process of Bulk Porous Nickel Prepared by Scanning Jet Electrodeposits |
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| GONG Kai,HUANG Yin-hui,TIAN Zong-jun,LIU Zhi-dong,Wang Gui-feng. Research on Technological Process of Bulk Porous Nickel Prepared by Scanning Jet Electrodeposits[J]. Journal of Materials Engineering, 2009, 0(8) |
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| Authors: | GONG Kai HUANG Yin-hui TIAN Zong-jun LIU Zhi-dong Wang Gui-feng |
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| Affiliation: | GONG Kai,HUANG Yin-hui,TIAN Zong-jun,LIU Zhi-dong,Wang Gui-feng(Jiangsu Key Laboratory of Precision , Micro-Manufacturing Technology,Nanjing University of Aeronautics , Astronautics,Naijing 210016,China) |
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| Abstract: | The bulk porous nickel sample was introduced and made by jet scanning electrodeposition forming.The surface morphology,microstructure,grain size of the micro-cell structure of deposition,were studied and analyzed by means of SEM,and the mechanical properties of the sample were also studied,such as surface micro-hardness and compressive property.The results show that,using jet scanning electrodeposition in current density of 900A/dm2,the prepared sample's porosity is 61.5%.The surface micro-hardness of the s... |
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| Keywords: | porous metal dendritic crystal jet electrodeposition microhardness compressive property |
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