On the compressive behavior of sintered porous coppers with low-to-medium porosities - Part II: Preparation and microstructure

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	On the compressive behavior of sintered porous coppers with low-to-medium porosities - Part II: Preparation and microstructure
	B. Wang; E. Zhang
	2008
发表期刊	International Journal of Mechanical Sciences
ISSN	0020-7403
卷号	50 期号:3 页码:550-558
摘要	A polymer space-holder method was used in this study to prepare porous coppers with low-to-medium porosity within the range 5-50%. This provides the possibility to control the pore size, distribution and structure. Optical microscopy and scanning electron microscopy (SEM) with energy dispersion spectrum (EDS) were utilized to characterize the porous samples. Two different sizes of copper powders, 5 and 45 mu m, were used to investigate the effect of raw materials powder size. Microstructure results have shown that there exist two different types of pore in the sintered samples: round-shaped macro-pores left over by the burnout of the space holder and irregular micro-pores or the intervals among metal powders. No matter which size powder was used, the size of the macro-pore falls into a range 200-500 mu m, but the pore structures are different in the two cases, interconnected or open pores for the 45 pm raw powders and closed pore for the 5 mu m powders. The sizes of the micro-pores among the copper powders in the two cases are also different, several microns for the 5 mu m powders and 10-20 mu m for the 45 mu m powders, though all micro-pores are interconnected for both powder sizes. From the viewpoint of pore structure, it is concluded that the 45 mu m powder is more appropriate for use to prepare the porous metal. In addition, the effect of the binder was also investigated. It is suggested that a binder that can be easily and completely removed should be used in order to induce the residue. This paper, as Part II of the publication, focuses on the fabrication of the porous samples where Part I [Lemons JE, editor. Quantitative characterization and performance of porous implants for hard tissue application. ASTM STP 953; 1985] has been published earlier for the mechanical properties of the material. (C) 2007 Elsevier Ltd. All rights reserved.
部门归属	[wang, bin] univ manchester, sch mech aerosp & civil engn, manchester m60 1qd, lancs, england. [zhang, erlin] chinese acad sci, inst met res, shenyang 110016, peoples r china.;wang, b (reprint author), univ manchester, sch mech aerosp & civil engn, manchester m60 1qd, lancs, england;bin.wang@abdn.ac.uk
关键词	Porous Metal Powder Metallurgy Microstructure Mechanical Strength Mechanical-properties Corrosion Behavior Implant Materials Titanium Foams Manufacture Metal
URL	查看原文
WOS记录号	WOS:000254687000016
引用统计	被引频次：35[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33114
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Wang,E. Zhang. On the compressive behavior of sintered porous coppers with low-to-medium porosities - Part II: Preparation and microstructure[J]. International Journal of Mechanical Sciences,2008,50(3):550-558.
APA	B. Wang,&E. Zhang.(2008).On the compressive behavior of sintered porous coppers with low-to-medium porosities - Part II: Preparation and microstructure.International Journal of Mechanical Sciences,50(3),550-558.
MLA	B. Wang,et al."On the compressive behavior of sintered porous coppers with low-to-medium porosities - Part II: Preparation and microstructure".International Journal of Mechanical Sciences 50.3(2008):550-558.