{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390001206478467584.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2320/jinstmet.72.758"}},{"identifier":{"@type":"COI","@value":"1:CAS:528:DC%2BD1cXht12ntLvM"}},{"identifier":{"@type":"URI","@value":"https://www.jstage.jst.go.jp/article/jinstmet/72/9/72_9_758/_pdf"}},{"identifier":{"@type":"NAID","@value":"130004456021"}}],"dc:title":[{"@language":"en","@value":"Effect of Graded Pore Distribution on Thermal Insulation of Metal Foam"},{"@language":"ja","@value":"ポーラス金属の断熱特性に及ぼす傾斜的気孔分布の影響"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Metal foams are attractive materials for thermal insulators because of their low thermal conductivity. Coefficient of thermal expansion (CTE) of metal foams is the same as that of cell wall materials. Therefore, the effect of thermal stress induced by a change in CTE, which is severe in the thermal barrier coating by ceramics, becomes negligible. In this study, we focus on designing metal foams as thermal insulators. The effect of porosity and pore shape on the thermal conductivity was calculated by micromechanical analysis. It was revealed that oblate spheroidal pores are effective to decrease the thermal conductivity. Micromechanical analysis also revealed that the thermal conductivity can be controlled by pore distribution of the metal foam. That is, metal foam with graded porosity has low thermal conductivity compared to uniform porosity. A diffusion-bonding process enabled to manufacture 5083 aluminum alloy preforms containing TiH<sub>2</sub> particles as a foaming agent. Foaming test by directional heating enabled to manufacture closed-cell 5083 aluminum alloy foams having both oblate spheroidal pores and graded pore distribution.<br>"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420282801194203776","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10612400"},{"@type":"NRID","@value":"1000010612400"},{"@type":"NRID","@value":"9000412667249"},{"@type":"NRID","@value":"9000392326722"},{"@type":"NRID","@value":"9000314065106"},{"@type":"NRID","@value":"9000382674681"},{"@type":"NRID","@value":"9000392374790"},{"@type":"NRID","@value":"9000334424690"},{"@type":"NRID","@value":"9000278507799"},{"@type":"NRID","@value":"9000370732674"},{"@type":"NRID","@value":"9000386207641"},{"@type":"NRID","@value":"9000392246665"},{"@type":"NRID","@value":"9000014186169"},{"@type":"NRID","@value":"9000410904087"},{"@type":"NRID","@value":"9000257857570"},{"@type":"NRID","@value":"9000380477124"},{"@type":"NRID","@value":"9000397864659"},{"@type":"NRID","@value":"9000326253722"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/7000016370"}],"foaf:name":[{"@language":"en","@value":"Suzuki Ryosuke"},{"@language":"ja","@value":"鈴木 良祐"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of System Design, Tokyo Metropolitan University"},{"@language":"ja","@value":"首都大学東京大学院システムデザイン研究科"}]},{"@id":"https://cir.nii.ac.jp/crid/1420282801183805568","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"20321573"},{"@type":"NRID","@value":"1000020321573"},{"@type":"NRID","@value":"9000014126711"},{"@type":"NRID","@value":"9000001093099"},{"@type":"NRID","@value":"9000403418833"},{"@type":"NRID","@value":"9000283323076"},{"@type":"NRID","@value":"9000409284810"},{"@type":"NRID","@value":"9000361704372"},{"@type":"NRID","@value":"9000253250603"},{"@type":"NRID","@value":"9000333082382"},{"@type":"NRID","@value":"9000399361287"},{"@type":"NRID","@value":"9000283323071"},{"@type":"NRID","@value":"9000333082406"},{"@type":"NRID","@value":"9000002180171"},{"@type":"NRID","@value":"9000397423384"},{"@type":"NRID","@value":"9000001826824"},{"@type":"NRID","@value":"9000253250599"},{"@type":"NRID","@value":"9000410513535"},{"@type":"NRID","@value":"9000255901646"},{"@type":"NRID","@value":"9000283105940"},{"@type":"NRID","@value":"9000018491782"},{"@type":"NRID","@value":"9000253635682"},{"@type":"NRID","@value":"9000018915938"},{"@type":"NRID","@value":"9000286622273"},{"@type":"NRID","@value":"9000410181571"},{"@type":"NRID","@value":"9000396102050"},{"@type":"NRID","@value":"9000283232153"},{"@type":"NRID","@value":"9000333082392"},{"@type":"NRID","@value":"9000016608387"},{"@type":"NRID","@value":"9000015427216"},{"@type":"NRID","@value":"9000414493616"},{"@type":"NRID","@value":"9000257969983"},{"@type":"NRID","@value":"9000332700225"},{"@type":"NRID","@value":"9000297508301"},{"@type":"NRID","@value":"9000330755496"},{"@type":"NRID","@value":"9000369342683"},{"@type":"NRID","@value":"9000272251969"},{"@type":"NRID","@value":"9000242681658"},{"@type":"NRID","@value":"9000261665057"},{"@type":"NRID","@value":"9000324641674"},{"@type":"NRID","@value":"9000405665571"},{"@type":"NRID","@value":"9000257846139"},{"@type":"NRID","@value":"9000257857571"},{"@type":"NRID","@value":"9000257859014"},{"@type":"NRID","@value":"9000241814063"},{"@type":"NRID","@value":"9000330753118"},{"@type":"NRID","@value":"9000383069341"},{"@type":"NRID","@value":"9000403035366"},{"@type":"NRID","@value":"9000326263542"},{"@type":"NRID","@value":"9000266438772"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0060964"}],"foaf:name":[{"@language":"en","@value":"Kitazono Koichi"},{"@language":"ja","@value":"北薗 幸一"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of System Design, Tokyo Metropolitan University"},{"@language":"ja","@value":"首都大学東京大学院システムデザイン研究科"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00214876"},{"@type":"LISSN","@value":"00214876"},{"@type":"EISSN","@value":"18806880"},{"@type":"EISSN","@value":"24337501"}],"prism:publicationName":[{"@language":"ja","@value":"日本金属学会誌"},{"@language":"en","@value":"Journal of the Japan Institute of Metals and Materials"},{"@language":"en","@value":"J. Japan Inst. Metals"},{"@language":"en","@value":"J. Japan Inst. Metals and Materials"},{"@language":"en","@value":"Journal of the Japan Institute of Metals"},{"@language":"ja","@value":"日本金属学会誌"},{"@language":"en","@value":"J.Japan Inst.Metals"},{"@language":"ja","@value":"日本金屬學會誌"}],"dc:publisher":[{"@language":"en","@value":"The Japan Institute of Metals and Materials"},{"@language":"ja","@value":"公益社団法人 日本金属学会"}],"prism:publicationDate":"2008","prism:volume":"72","prism:number":"9","prism:startingPage":"758","prism:endingPage":"762"},"reviewed":"false","url":[{"@id":"https://www.jstage.jst.go.jp/article/jinstmet/72/9/72_9_758/_pdf"}],"availableAt":"2008","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=aluminum%20foam","dc:title":"aluminum foam"},{"@id":"https://cir.nii.ac.jp/all?q=superplasticity","dc:title":"superplasticity"},{"@id":"https://cir.nii.ac.jp/all?q=diffusion-bonding","dc:title":"diffusion-bonding"},{"@id":"https://cir.nii.ac.jp/all?q=thermal%20barrier%20coating","dc:title":"thermal barrier coating"},{"@id":"https://cir.nii.ac.jp/all?q=micromechanical%20analysis","dc:title":"micromechanical analysis"},{"@id":"https://cir.nii.ac.jp/all?q=thermal%20conductivity","dc:title":"thermal conductivity"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360565165414207232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Functionally Graded Aluminum Foam Fabricated by Friction Powder Sintering Process with Traversing Tool"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567181431343872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Fabrication of Two-Layered Aluminum Foam Having Layers with Closed-Cell and Open-Cell Pores"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846641014278912","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Nondestructive observation of pore structure deformation behavior of functionally graded aluminum foam by X-ray computed tomography"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570430994944","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Toughness of aluminium alloy foams"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044329965568","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Average stress in matrix and average elastic energy of materials with misfitting inclusions"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137046527171712","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Sound absorption in metallic foams"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981469892768256","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Fatigue behavior of a thermal barrier coated superalloy at 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observation"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206476890240","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Quantitative Evaluation of the Anisotropic Foaming Behavior for Aluminum Foams"},{"@language":"ja","@value":"ポーラスアルミニウムの異方性発泡挙動の定量的評価"},{"@language":"ja-Kana","@value":"ポーラス アルミニウム ノ イホウセイ ハッポウ キョドウ ノ テイリョウテキ ヒョウカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206481399168","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"気孔率を変化させた 2 層構造ポーラスアルミニウムの摩擦粉末焼結法による作製とその圧縮特性"},{"@language":"en","@value":"Fabrication of Two Layers Porous Aluminum Varying Porosity by Friction Powder Sintering Process and Its Compression Properties"},{"@language":"ja-Kana","@value":"キコウリツ オ ヘンカ サセタ 2ソウ コウゾウ ポーラスアルミニウム ノ マサツ フンマツ ショウケツホウ ニ ヨル サクセイ ト ソノ アッシュク トクセイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679226160896","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Influence of Porosity and Pore Size on Electrical Resistivity of Porous Aluminum Produced by Spacer Method"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681457662080","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Compression Properties of Al/Al-Mg-Si/Al-Si-Cu Alloy Three-Layered Functionally Graded Aluminum Foam"},{"@language":"ja","@value":"Al/Al-Mg-Si/Al-Si-Cu 合金からなる 3 層傾斜機能ポーラスアルミニウムの機械的特性"},{"@language":"ja-Kana","@value":"Al/Al-Mg-Si/Al-Si-Cu ゴウキン カラ ナル 3ソウ ケイシャ キノウ ポーラスアルミニウム ノ キカイテキ トクセイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390288834704433408","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Effect of Si Concentration of a Brazing Precursor on the Bonding Strength of Aluminum Foam Bonded via Foaming 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