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unidirectional solidification (the Gasar process). The effects of Mn addition and the fabrication process on the porosity, pore diameter and microstructure of the porous Mg-Mn alloy were investigated. Mn addition improved the Mn precipitates and increased the porosity and pore diameter. With increasing hydrogen pressure from 0.1 to 0.6 MPa, the overall porosity of the Mg-2wt.%Mn ingot decreased......
and shrinkage correspond to different mechanical properties. The ultimate tensile strengths and elongations are mainly decided by the content and distribution of shrinkage porosity, while the yield... and mechanical properties of LPDC AZ91D are improved with fine microstructures. Key words: AZ91D; magnesium alloys; low pressure die cast; microstructure; porosity; mechanical property 1 Introduction......
characteristics and compressive properties of the specimens were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that the porosity of the porous.... The open porosity and compressive strength as well as compressive elastic modulus vary with the adding amount and particle size of NH4HCO3. When the mass fraction of NH4HCO3 added is 25%, elastic modulus......
mainly distribute in resin and layered, and concentration pores distribute in rich resin area. Increasing pore quantity is the main reason for increased porosity. While porosity increases, the average length, width and area of pores increase, but the ratio between width and length is unchanged. As well, the shape factor decreases, and it decreases faster when porosity is larger than 1.5%. Lognormal......
and open porosity of stainless steel foam; when the stainless steel powder with particle size of 44 μm and slurry loading of 0.5 g/cm3 in precursor are used, a stainless steel foam can be obtained, which has open porosity of 81.2%, bending strength of about 51.76 MPa and apparent density of about 1.0 g/cm3. Key words: stainless steel foam; precursor; preparation; open porosity; bending......
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隙度组的上清液中碱性磷酸酶(Alkaline phosphatase, ALP)含量无明显差别(p＜0.05),而60%孔隙度组的ALP含量高于低孔隙度组的. 关键词:生物材料；医用钛合金；多孔钛；孔隙度；黏附；增殖；碱性磷酸酶 中图分类号:R783.1 文献标志码:A Effect of porosity of modified... with change of porosity of porous titanium. After cultured 7 d, MG63 is flat on the surface of 5% porosity titanium implant and extends to amphi-edge of the pore on the surface of 30% porosity titanium......
(Ⅱ) --Pore ratio and compressive strength Abstract: This study was focussed upon the porosity (pore ratio) and compressive strength of the raw material, which was mixed the rare earth concentrates with two kinds of carbon reductants, A 0 and B 0, and pressed into compacts. After the compacts were roasted at 773 K, 1 573~1 773 K respectively, their porosity......
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is considered in a fractured reservoir using the dual porosity model. Afterwards, a computational code is developed to solve the same problem by the IMPES method and the results of streamline simulation... words: two-phase flow; porous media; fractured reservoirs; streamline simulation; dual porosity; implicit pressure-explicit saturation 1 Introduction Increased global demand for fossil fuels presents......
