{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"Two types of experiments were designed and performed to evaluate the adhesive bond in metal foam composite sandwich structures. The tensile bond strength of face/core was determined through the flatwise tensile test (FWT). The test results show that the interfacial peel strength is lower than the interlaminar peel strength in FWT test. The mode I interfacial fracture toughness (GIC) of sandwich structures containing a pre-crack on the upper face/core interface is determined by modified cracked sandwich beam (MCSB) experiment. It is found that the crack propagates unsynchronously on the two side of the specimen and the propagation of interfacial debonding always stays on the face/core interface during the MCSB tests. In order to simulate the failure of metal foam composite sandwich structures, a computational model based on the Tsai-Hill failure
\ncriterion and cohesive zone model is used. By comparing with experiment results, it can be concluded that the computational model can validly simulate the interfacial failure of metal foam composite sandwich structures with reasonable accuracy","authors":[{"authorName":"Xinzhu Wang","id":"ef1113bd-bff3-49f6-896a-802466e6ffb3","originalAuthorName":"Xinzhu Wang"}],"categoryName":"|","doi":"","fpage":"713","id":"d2472e36-a03a-47ef-9ee7-793bc0c1cb7a","issue":"5","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[{"id":"e99fa891-c1dd-44f6-8d54-6d8e72587ce8","keyword":"Interfacial fracture toughness","originalKeyword":"Interfacial fracture toughness"}],"language":"en","publisherId":"1005-0302_2009_5_20","title":"Study of Debond Fracture Toughness of Sandwich Composites with Metal Foam Core","volume":"25","year":"2009"},{"abstractinfo":"The microstructure and mechanical properties of Mg-10.1Gd-3.74Y-0.25Zr (mass fraction, %) alloy (GW104 alloy) cast by metal mould casting (MMC) and lost foam casting (LFC) were evaluated, respectively. It is revealed that different forming modes do not influence the phase composition of as-cast alloy. In the as-cast specimens, the microstructures are similar and composed of alpha-Mg solid solution, eutectic compound of alpha-Mg+Mg(24)(Gd, Y)(5) and cuboid-shaped Mg(5)(Gd, Y) phase; whereas the average grain size of the alloy produced by metal mould casting is smaller than that by lost foam casting. The eutectic compound of the alloy is completely dissolved after solution treatment at 525 degrees C for 6 h, while the Mg5(Gd, Y) phase still exists after solution treatment. After peak-ageing, the lost foam cast alloy exhibits the maximum ultimate tensile strength of 285 MPa, and metal mould cast specimen 325 MPa at room temperature, while the tensile yield strengths of them are comparable. It can be concluded that GW104 alloy cast by lost foam casting possesses similar microstructure and evidently lower mechanical strength compared with metal mould cast alloy, due to slow solidification rate and proneness to form shrinkage porosities during lost foam casting process.","authors":[],"categoryName":"|","doi":"","fpage":"761","id":"5d56072f-faa3-43b6-9883-3574922412cd","issue":"4","journal":{"abbrevTitle":"TONMSOC","id":"9449c409-0c62-400e-a51e-429b454dce51","issnPpub":"1003-6326","publisherId":"TONMSOC","title":"Transactions of Nonferrous Metals Society of China"},"keywords":[{"id":"f5db406e-5053-49fe-bdb2-b95c8ffec5e6","keyword":"Mg-Gd-Y-Zr alloy;lost foam casting;metal mould casting;microstructure;mechanical property;age-hardening response;tensile properties","originalKeyword":"Mg-Gd-Y-Zr alloy;lost foam casting;metal mould casting;microstructure;mechanical property;age-hardening response;tensile properties"}],"language":"en","publisherId":"1003-6326_2011_4_3","title":"Microstructure and mechanical properties of Mg-Gd-Y-Zr alloy cast by metal mould and lost foam casting","volume":"21","year":"2011"},{"abstractinfo":"提出了一种根据泡沫金属的孔率和孔径这两个基本参量计算其比表面积的方法. 利用泡沫金属比表面积与孔率和孔径的对应数理关系, 结合有关实验数据,成功地计算出了电沉积法和高压渗流铸造法制备的泡沫金属的比表面积.","authors":[{"authorName":"刘培生","id":"ccf13783-75d1-4983-9934-b7403e2d97a3","originalAuthorName":"刘培生"}],"categoryName":"|","doi":"","fpage":"415","id":"fc3e032d-2b90-45eb-9806-a9acbe428dee","issue":"4","journal":{"abbrevTitle":"CLYJXB","coverImgSrc":"journal/img/cover/CLYJXB.jpg","id":"16","issnPpub":"1005-3093","publisherId":"CLYJXB","title":"材料研究学报"},"keywords":[{"id":"6dc96d79-ffa7-48d5-924e-069d5bcd73fd","keyword":"材料科学基础学科","originalKeyword":"材料科学基础学科"},{"id":"6588f2bb-1836-4911-8740-40366888c8a3","keyword":"porous metal","originalKeyword":"porous metal"},{"id":"1d48b879-d9ff-4d1e-b2c0-072131fc66df","keyword":"porous material","originalKeyword":"porous material"},{"id":"6e95c67f-95d0-48a9-87f6-bacdcf853fe3","keyword":"metal foam","originalKeyword":"metal foam"},{"id":"061e0da0-52ae-4d8d-ab81-10b82e83c875","keyword":"specific surface area","originalKeyword":"specific surface area"}],"language":"zh","publisherId":"1005-3093_2009_4_7","title":"多孔金属比表面积的计算方法","volume":"23","year":"2009"},{"abstractinfo":"A pentagonal dodecahedron model of metal foam with open cells was considered for calculation of specific surface area. of the high porosity metals. According to the pentagonal dodecahedron model the authors calculate the specific surface area of nickel foam samples with the cell size of similar to 200 mu m and find it approximate agreement with the results obtained by other methods, and the specific surface area of metal foams is correlated with cell size and the width of cell wall.","authors":[],"categoryName":"|","doi":"","fpage":"1364","id":"8d3e10e6-0f54-400d-aac3-0687e02af84e","issue":"11","journal":{"abbrevTitle":"MSAT","id":"5c4ea523-f3ab-4618-9c21-537efff1d7fc","issnPpub":"0267-0836","publisherId":"MSAT","title":"Materials Science and Technology"},"keywords":[{"id":"ac7e3525-8048-4347-81fb-c33283de0db9","keyword":"specific surface area;dodecahedron;model;foam metal;adsorption","originalKeyword":"specific surface area;dodecahedron;model;foam metal;adsorption"}],"language":"en","publisherId":"0267-0836_2006_11_1","title":"Calculation of specific surface area of foam metals using dodecahedron model","volume":"22","year":"2006"},{"abstractinfo":"Porosity is a main defect in aluminum alloy castings, which is also thought to be severe in aluminum alloy castings produced by lost foam process due to the pyrolysis of the polystyrene foam pattern during pouring. Fundamental experiments were carried out to evaluate the effect of process parameters such as the melt treatment, the cooling rate and the density of expanded polystyrene (EPS) foam on porosity in A356.2 bar casting. The effect of melt treatment including degassing and refining was investigated. The effect of cooling rate was also evaluated by changing the mold packing material such as the silica sand, the zircon sand and the steel shots. Gas entrapment due to the turbulent metal flow during mold filling in conventional molding process results in porosity. Mold filling sequence in lost foam process is different from that in conventional molding process. The effect of molten metal flow was estimated by comparing the density of the casting by conventional sodium silicate molding with that by lost foam process. Density measurement was conducted to analyze the extent of porosity in the casting. Source of the porosity in lost foam process can be divided into two factors, i.e. turbulence in molten metal flow and entraining residue or gas from the pattern during pouring.","authors":[{"authorName":"Kiyoung KIM","id":"9c212407-b357-493b-94aa-675b68cb350e","originalAuthorName":"Kiyoung KIM"},{"authorName":" Kyongwhoan LEE","id":"e3a5d624-a55a-4da8-aaae-640f6aa52664","originalAuthorName":" Kyongwhoan LEE"}],"categoryName":"|","doi":"","fpage":"681","id":"5786070a-57f9-49f1-9091-2b4f471fdd8f","issue":"5","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[{"id":"47e34367-4d35-4d28-881c-c3ba96a1216b","keyword":"Lost foam process","originalKeyword":"Lost foam process"},{"id":"bf290336-7d22-4605-8e83-92b0d01c9b12","keyword":"null","originalKeyword":"null"},{"id":"f6c10f1d-41c8-43f9-aa18-6e26a36dc710","keyword":"null","originalKeyword":"null"},{"id":"0c93cb60-2bf1-4edc-8525-a85be965400b","keyword":"null","originalKeyword":"null"},{"id":"e310055d-b71f-43aa-b977-d1702963ba7d","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1005-0302_2005_5_5","title":"Effect of Process Parameters on Porosity in Aluminum Lost Foam Process","volume":"21","year":"2005"},{"abstractinfo":"Low cost and catalytically effective transition metal catalysts are highly wanted in developing on-demand hydrogen generation system for practical onboard application. By using a modified electroless plating method, we have prepared a robust Co-W-B amorphous catalyst supported on Ni foam (Co- W-B/Ni foam catalyst) that is highly effective for catalyzing hydrogen generation from alkaline NaBH4 solution. It was found that the plating times, calcination temperature, NaBH4 and NaOH concentrations all exert considerable influence on the catalytic effectiveness of Co-W-B/Ni foam catalyst towards the hydrolysis reaction of NaBH4. Via optimizing these preparation and reaction conditions, a hydrogen generation rate of 15 L/min g (Co-W-B) has been achieved, which is comparable to the highest level of noble metal catalyst. In consistent with the observed pronounced catalytic activity, the activation energy of the hydrolysis reaction using Co-W-B/Ni foam catalyst was determined to be only 29 kJ/mol. Based on the phase analysis and structural characterization results, the mechanism underlying the observed dependence of catalytic effectiveness on the calcination temperature was discussed. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"4405","id":"34265a2c-2680-481d-bfad-7003f51bf845","issue":"16","journal":{"abbrevTitle":"IJOHE","id":"ba510e77-ca7b-45f7-9dcc-9f57b8fca19c","issnPpub":"0360-3199","publisherId":"IJOHE","title":"International Journal of Hydrogen Energy"},"keywords":[{"id":"ffb396e0-b1e4-4b77-b579-5a34e510567f","keyword":"Hydrogen generation;NaBH4;Electroless plating;Co-W-B amorphous;catalyst;Ni foam support;co-b catalyst;nabh4 solution;boride catalyst;ru catalyst;hydrolysis;storage;alloys;deposition;hydrides;progress","originalKeyword":"Hydrogen generation;NaBH4;Electroless plating;Co-W-B amorphous;catalyst;Ni foam support;co-b catalyst;nabh4 solution;boride catalyst;ru catalyst;hydrolysis;storage;alloys;deposition;hydrides;progress"}],"language":"en","publisherId":"0360-3199_2008_16_1","title":"High-performance cobalt-tungsten-boron catalyst supported on Ni foam for hydrogen generation from alkaline sodium borohydride solution","volume":"33","year":"2008"},{"abstractinfo":"A simplified model was proposed targeting at the isotropic high porosity metal materials with well-distributed structure. From the model the mathematical relationship between elongation and porosity was deduced for those materials, and the relationship formula was derived generally for actual high porosity metals at last, whose validity is supported by the representative experiment on a nickel foam prepared by electrodeposition.","authors":[],"categoryName":"|","doi":"","fpage":"546","id":"21417e0d-3cfb-4926-a689-5d64207a30f4","issue":"3","journal":{"abbrevTitle":"TONMSOC","id":"9449c409-0c62-400e-a51e-429b454dce51","issnPpub":"1003-6326","publisherId":"TONMSOC","title":"Transactions of Nonferrous Metals Society of China"},"keywords":[{"id":"45560efd-4c7b-4bf5-8b5b-fbfc9c29647c","keyword":"high porosity metal material;elongation;porosity","originalKeyword":"high porosity metal material;elongation;porosity"}],"language":"en","publisherId":"1003-6326_1999_3_3","title":"Relationship between elongation and porosity for high porosity metal materials","volume":"9","year":"1999"},{"abstractinfo":"","authors":[{"authorName":"","id":"f5782fda-7074-4873-bbf9-92b5b55df426","originalAuthorName":""},{"authorName":"","id":"f5913147-5c11-4e7e-8c26-c76df6129b85","originalAuthorName":""},{"authorName":"","id":"8bffb4b0-6948-46c9-a45d-cfe6cbd3d36a","originalAuthorName":""}],"doi":"","fpage":"713","id":"e5758dfb-bf10-465d-b740-a2b70d67ed7c","issue":"5","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[{"id":"8cffa7c1-12f1-4a22-8c67-6723b590bb8f","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"clkxjsxb-e200905028","title":"Study of Debond Fracture Toughness of Sandwich Composites with Metal Foam Core","volume":"25","year":"2009"},{"abstractinfo":"The hydrodynamic performance of a novel SiC foam column tray (SFCT), made of thin slices of SiC foam material with a high specific surface area, is investigated. The performance parameters include pressure drop, entrainment, weeping, and clear liquid height. The tests are carried out with an air-water system under atmospheric pressure. The mass transfer efficiency of the new SiC foam column tray is studied in a stainless-steel plate column. The results provide some important parameters for the development of this innovative SiC foam tray.","authors":[],"categoryName":"|","doi":"","fpage":"2075","id":"5873c5a1-afff-4cf6-8ec7-d52839ea4eab","issue":"12","journal":{"abbrevTitle":"CE&T","id":"d8201d59-6479-4425-9fef-bd03fd3f7119","issnPpub":"0930-7516","publisherId":"CE&T","title":"Chemical Engineering & Technology"},"keywords":[{"id":"9d62df85-0143-44c4-9838-3d16cecb66f4","keyword":"Clear liquid height;Entertainment;Mass transfer;Pressure drop;SiC;foam column tray;Weeping;distillation sieve tray;pressure-drop;valve trays;hydraulics;prediction;efficiency;flow","originalKeyword":"Clear liquid height;Entertainment;Mass transfer;Pressure drop;SiC;foam column tray;Weeping;distillation sieve tray;pressure-drop;valve trays;hydraulics;prediction;efficiency;flow"}],"language":"en","publisherId":"0930-7516_2012_12_1","title":"Hydrodynamic and Mass Transfer Performances of a New SiC Foam Column Tray","volume":"35","year":"2012"},{"abstractinfo":"Ammonia borane (AB) is an intriguing molecular crystal with extremely high hydrogen density. In the present study, by using a modified electroless plating method, we prepare a robust supported cobalt-molybdenum-boron (Co-Mo-B)/nickel (Ni) foam catalyst that can effectively promote the hydrogen release from AB aqueous solution at ambient temperatures. The catalytic activity of the catalyst towards the hydrolysis reaction of AB can be further improved by appropriate calcination treatment. In an effort to understand the effect of calcination treatment on the catalytic activity of the catalyst, combined structural/phase analyses of the series of catalyst samples have been carried out. Using the catalyst that is calcined at optimized condition, a detailed study of the catalytic hydrolysis kinetics of AB is carried out. It is found that the hydrolysis of AB in the presence of Co-Mo-B/Ni foam catalyst follows first-order kinetics with respect to AB concentration and catalyst amount, respectively. The apparent activation energy of the catalyzed hydrolysis reaction is determined to be 44.3 kJ mol(-1), which compares favorably with the literature results for using other non-noble transition metal catalysts. (C) 2009 Elsevier B.V. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"307","id":"2bd06c85-c274-4005-b765-8ba9b6c8ece6","issue":"1","journal":{"abbrevTitle":"JOPS","id":"efe33d30-d52c-424d-8f5a-515792e49459","issnPpub":"0378-7753","publisherId":"JOPS","title":"Journal of Power Sources"},"keywords":[{"id":"963a52c7-9851-4de1-acf4-ec494721165a","keyword":"Hydrogen generation;Ammonia borane;Electroless plating;Cobalt-molybdenum-boron/nickel foam catalyst;Hydrolysis kinetics;sodium-borohydride solution;room-temperature;amine-borane;hydrolysis;storage;dehydrogenation;system;alloy;dissociation;hydride","originalKeyword":"Hydrogen generation;Ammonia borane;Electroless plating;Cobalt-molybdenum-boron/nickel foam catalyst;Hydrolysis kinetics;sodium-borohydride solution;room-temperature;amine-borane;hydrolysis;storage;dehydrogenation;system;alloy;dissociation;hydride"}],"language":"en","publisherId":"0378-7753_2010_1_1","title":"Promoted hydrogen generation from ammonia borane aqueous solution using cobalt-molybdenum-boron/nickel foam catalyst","volume":"195","year":"2010"}],"totalpage":170,"totalrecord":1691}