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Development of Si3N4/ Al composite by pressureless melt infiltration
Institute of Powder Metallurgy, Materials Science Department, University of Science and Technology Beijing.ORCID iD: 0000-0003-4888-6237
Institute of Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology, Beijing.
2006 (English)In: European PM 2005 conference proceedings: Prague Congress Centre, Czech Republic, 2-5 October 2005., Shrewsbury: European powder metallurgy association , 2006, Vol. 2, p. 271-278Conference paper, Published paper (Refereed)
Abstract [en]

Pressureless infiltration process to synthesize Si3N4/ Al composite was investigated. Al- 2%Mg alloy was infiltrated into the Si3N4 and Si3N4 containing 10% Al2O3 preforms in the atmosphere of nitrogen. It is possible to infiltrate Al- 2%Mg alloy in Si3N4 and Si3N4 containing 10% Al2O3 preforms. The growth of the dense composite of useful thickness was facilitated by the presence of magnesium powder at the interface and by flowing nitrogen. During infiltration Si3N4 reacted with Aluminium to form Si and AlN. The growth of composite was found to proceed in two ways, depending on the Al2O3 content in the initial preform. First, preform without Al2O3 content gave rise to AlN, Al3.27Si0.47 and Al type phases after infiltration. Second, perform with 10% Al2O3 content gave rise to AlN-Al2O3 solid solution phase (AlON), MgAl2O4, Al and Si type phases. AlON phase was only present in composite, containing 10% Al2O3 in the Si3N4 preforms before infiltration.

Place, publisher, year, edition, pages
Shrewsbury: European powder metallurgy association , 2006. Vol. 2, p. 271-278
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-27649Local ID: 129fbaa4-0f7c-4c92-b403-8729c1035ea4ISBN: 9781899072187 (print)OAI: oai:DiVA.org:ltu-27649DiVA, id: diva2:1000837
Conference
EURO PM 2005 : 02/10/2005 - 05/10/2005
Note
Upprättat; 2006; 20150513 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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  • de-DE
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Output format
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