Author
Xiaowei Chen
Bio: Xiaowei Chen is an academic researcher from Hebei University of Technology. The author has contributed to research in topics: Magnesium alloy & Corrosion. The author has an hindex of 4, co-authored 7 publications receiving 130 citations.
Topics: Magnesium alloy, Corrosion, Alloy, Metal foam, Ceramic
Papers
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TL;DR: In this article, closed-cell aluminum foams with different kinds and contents of ceramic microspheres are obtained using melt-foaming method, and the distribution and the effects of the ceramic micro-spheres on the mechanical properties of aluminum Foams are investigated.
72 citations
TL;DR: In this article, closed-cell AZ31 magnesium alloy foams with different percentages of hollow ceramic microspheres (CMs) were synthesized using modified melt foaming method, and the effect of CMs on the foaming behaviors (specifically for porosity and pore size) and quasi-static compressive behaviors of Mg-based composite foams are characterized.
40 citations
TL;DR: In this article, the performance of closed-cell AZ31 foam in different concentrations of NaCl solutions is investigated, using commercial AZ31 magnesium alloy as comparison, and mathematical models and expressions are established to calculate surface areas of the foams.
18 citations
Patent•
02 Apr 2014
TL;DR: In this article, a piece of complete equipment for producing foam metals and related to alloys with open or closed pores is described. The complete equipment mainly comprises a mold conveying device, two sets of identical vertical lifting stirring devices, a manipulator device, a gas protection device, cooling device, machining platform, a sealed box type heating furnace, a sealing box type casting furnace, sealed box types forming furnace, and a smelting furnace.
Abstract: The invention provides a piece of complete equipment for producing foam metals and relates to alloys with open or closed pores. The complete equipment mainly comprises a mold conveying device, two sets of identical vertical lifting stirring devices, a manipulator device, a gas protection device, a cooling device, a machining platform, a sealed box type heating furnace, a sealed box type casting furnace, a sealed box type forming furnace, a smelting furnace and a control panel. The complete equipment is a piece of three-dimensional full-automatic complete equipment capable of continuously producing the foam metals, and the defects of low production efficiency, waste of energy resources and the like of foam metal production equipment in the prior art are overcome.
11 citations
Patent•
10 Sep 2014
TL;DR: In this article, a method for recycling waste foamed magnesium was proposed, which consisted of firstly, carrying out pre-treatment on a waste material; secondly, smelting the waste material: evenly spreading a layer of bottom flux at the bottom of a crucible, then adding the foamed waste material treated in the first step into the crucible; and finally, refining liquid: adding a refining flux into the liquid obtained by the second step, refining, standing and drossing to remove the surface material to obtain purified magnesium alloy liquid.
Abstract: The technical scheme disclosed by the invention is to provide a method for recycling waste foamed magnesium. The method comprises the following steps of firstly, carrying out pre-treatment on a waste material; secondly, smelting the waste material: evenly spreading a layer of bottom flux at the bottom of a crucible, then adding the foamed magnesium waste material treated in the first step into the crucible, then evenly spreading a layer of bottom flux on the surface of the foamed magnesium waste material, repeating the two steps, and introducing a gas mixture of SF6 and CO2 while melting; thirdly, refining liquid: adding a refining flux into the liquid obtained by the second step, refining, standing, and drossing to remove the surface material to obtain purified magnesium alloy liquid; fourthly, casting: casting the magnesium alloy liquid into magnesium alloy ingots. By virtue of the method disclosed by the invention, foamed magnesium is recycled and regenerated, and the recovery rate can reach above 80%. Based on conventionally prepared foamed magnesium, the waste of a magnesium alloy is greatly reduced by recycling the waste foamed magnesium, the utilization rate of the material is improved and the recycling of the foamed magnesium material is achieved.
4 citations
Cited by
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TL;DR: An updated overview of the different manufacturing processes of composite and nanocomposite metal foams is provided.
Abstract: Open-cell and closed-cell metal foams have been reinforced with different kinds of micro- and nano-sized reinforcements to enhance their mechanical properties of the metallic matrix. The idea behind this is that the reinforcement will strengthen the matrix of the cell edges and cell walls and provide high strength and stiffness. This manuscript provides an updated overview of the different manufacturing processes of composite and nanocomposite metal foams.
103 citations
TL;DR: In this article, hollow glass microspheres reinforced magnesium matrix (AZ91D/HGM) syntactic foams have been synthesized for marine applications and the 40μm size reinforcement particles have been added with matrix under dissimilar mass fractions of 15, 20, and 23% to investigate the interfacial reaction, compressive properties, hardness, density, porosity, corrosion resistance.
93 citations
TL;DR: In this paper, an integrated manufacturing method to fabricate hierarchical porous polymer scaffolds was introduced, where polylactic acid (PLA) scaffolds with 100-800-μm macropores were fabricated by applying fused deposition modeling (FDM) techniques.
84 citations
TL;DR: In this article, the electrochemical behaviors of magnesium alloys (AZ31 and AZ61) and their composites reinforced with graphene nanoplatelets (GNPs) were carried out in 3.5% NaCl solution by polarization method.
81 citations
TL;DR: In this paper, the compressive deformation behavior of aluminum matrix syntactic foams with varying cenosphere sizes have been studied at varying strain rates (from 10 to 3∼103 s −1 ).
Abstract: The compressive deformation behavior of aluminum matrix syntactic foams with varying cenosphere sizes have been studied at varying strain rates (from 10 to 3∼103 s −1 ). The results showed that the size of the cenospheres and the strain rates had significant effects on the compressive properties. The smaller cenospheres ensured higher compressive strength due to fewer flaws in the microstructure and better mechanical stability. The energy absorption of the present syntactic foam was found to increase with an increase in strain rates. Compared to the conditions under quasi-static loading, the energy absorption capacity of syntactic foam exhibited 75–85% more under dynamic loading. The different compressive failure characteristics of syntactic foams could be attributed to the unit of shear displacement which got smaller with the increasing strain rates. These foams showed pronounced energy absorption capabilities, suggesting their potential for use in blast and impact protection.
71 citations