Neoker Single Crystal Alumina Fibers as reinforcement in Al-based MMC: first steps

Cerecedo, C. and Valcarcel, V. and Solis, A. and Pastor Caño, Jose Ignacio and Molina, M. and Prieto, R. and Louis, E. and Narciso, J. (2010). Neoker Single Crystal Alumina Fibers as reinforcement in Al-based MMC: first steps. In: "Modern ceramic materials and their application – 2010", 13/05/2010 - 14/05/2010, Novosibirssk, Rusia.

Description

Title: Neoker Single Crystal Alumina Fibers as reinforcement in Al-based MMC: first steps
Author/s:
  • Cerecedo, C.
  • Valcarcel, V.
  • Solis, A.
  • Pastor Caño, Jose Ignacio
  • Molina, M.
  • Prieto, R.
  • Louis, E.
  • Narciso, J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: Modern ceramic materials and their application – 2010
Event Dates: 13/05/2010 - 14/05/2010
Event Location: Novosibirssk, Rusia
Title of Book: Proceedings of the Modern ceramic materials and their application – 2010
Date: 2010
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

α-Al2O3 whiskers are good candidates for use as strengtheners in advanced composites, specifically, single crystal -Al2O3 whiskers grown with c-axis orientation, because of their favorable fracture strength, stiffness, and creep resistance, even at high temperatures are optimum reinforces. Very few methods are currently available to obtain single-crystal α-Al2O3 whiskers, and these methods were too complex and expensive for use on an industrial scale. A novel method for obtaining c-axis alumina single-crystal whiskers (developed at the Institute of Ceramic Materials of Galicia) has been scaled-up to industrial production by Neoker, a Spin-Off of the of the University of Santiago de Compostela, Spain. The technology for the production of the whiskers involves the reaction between aluminum and powdered silica in Ar atmospheres containing metal vapors. Aluminum is the most popular matrix for the metal matrix composites (MMCs). The Al alloys are quite attractive due to their low density, their capability to be strengthened by precipitation, their good corrosion resistance, high thermal and electrical conductivity, and their high damping capacity. The reinforcement in AMCs could be in the form of continuous/discontinuous whiskers, whisker or particulates, in volume fractions ranging from a few percent to 70%. Properties of AMCs can be tailored to the demands of different industrial applications by suitable combinations of matrix, reinforcement and processing route. The composites studied in the present work were prepared by infiltration processes where the reinforcements were pressed into a preform that was then infiltrated by the molten Al alloy

More information

Item ID: 9099
DC Identifier: http://oa.upm.es/9099/
OAI Identifier: oai:oa.upm.es:9099
Deposited by: Memoria Investigacion
Deposited on: 10 Oct 2011 09:24
Last Modified: 20 Apr 2016 17:39
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