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Aerogel-filled metals: a syntactic cellular material

Orth, Andreas and Steinbach, Sonja and Dennstedt, Anne and Ratke, Lorenz (2016) Aerogel-filled metals: a syntactic cellular material. Materials Science and Technology. Maney Publishing. DOI: 10.1080/02670836.2016.1195971 ISSN 0267-0836

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Abstract

A new filler material is presented and tested to produce light-weight aluminium alloy composites: the pore space between nano-structured silica-aerogel granulates is infiltrated with Al-alloy melts. Since these filler materials have vanishing density (100 kg m−3), they need not to be removed from the final cast product. Their shape, size and volume fraction determine the materials’ properties. Different methods were used to prepare metal-aerogel syntactic foam composites: centrifugal casting, squeeze and suction casting. The last method gave the best results, using an Al–11Si melt. We produced circular and rectangular bars up to 500-mm length. The composite material has a density of around 900 kg m−3, a yield stress of 8 MPa and absorbs 8 kJ kg−1 mechanical energy.

Item URL in elib:https://elib.dlr.de/104707/
Document Type:Article
Title:Aerogel-filled metals: a syntactic cellular material
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Orth, Andreasandreas.orth (at) esa.intUNSPECIFIED
Steinbach, Sonjasonja.steinbach (at) dlr.deUNSPECIFIED
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Ratke, LorenzLorenz.Ratke (at) dlr.deUNSPECIFIED
Date:16 June 2016
Journal or Publication Title:Materials Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1080/02670836.2016.1195971
Publisher:Maney Publishing
Series Name:Taylor & Francis
ISSN:0267-0836
Status:Published
Keywords:Porous metals, Aerogels, Casting, Tomography, Mechanical properties
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Institute of Materials Research > Aerogele
Deposited By: Steinbach, Dr.rer.nat. Sonja
Deposited On:20 Jun 2016 07:06
Last Modified:06 Sep 2019 15:18

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