On critical aspects of infiltrated Al/diamond composites for thermal management: Diamond quality versus processing conditions

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Title: On critical aspects of infiltrated Al/diamond composites for thermal management: Diamond quality versus processing conditions
Authors: Monje López, Ivonne E. | Louis, Enrique | Molina Jordá, José Miguel
Research Group/s: Materiales Avanzados | Física de la Materia Condensada
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Física Aplicada | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Metal–matrix composites (MMCs) | Interface/interphase | Thermal properties | Liquid metal infiltration
Knowledge Area: Química Inorgánica | Física de la Materia Condensada
Issue Date: Dec-2014
Publisher: Elsevier
Citation: Composites Part A: Applied Science and Manufacturing. 2014, 67: 70-76. doi:10.1016/j.compositesa.2014.08.015
Abstract: Al/diamond composites containing diamond particles of different qualities have been manufactured by gas pressure-assisted metal infiltration and characterized by thermal conductivity (TC) measurements. The results show that the intrinsic thermal conductivity of diamond (varied with the diamond quality) plays a minor role on TC. TC is mainly governed by the Al–diamond interface characteristics, which are determined by a proper control exerted through processing conditions. Albeit a very low cost and low quality diamond is used, a high value of 667 W/m K has been measured for Al/diamond composites produced under optimized processing conditions. Values above 740 W/m K are reported for the best diamond quality explored in this work. These experimental results, which assign the control over TC mainly to the interface conductance, suggest that many of the limiting values of TC reported in literature for the different explored metal–diamond systems, need to be reconsidered by proper precise control of interface evolution.
Sponsor: The authors acknowledge partial financial support from the Ministerio de Ciencia e Innovación (Projects MAT2011-25029 and AGNO – GRUPOANTOLIN-08Y) and Generalitat Valenciana (Project PROMETEO/2009/002). J.M. Molina wishes also to thank the Ministerio de Ciencia e Innovación for a “Ramón y Cajal” contract. I.E. Monje acknowledges the Universidad de Alicante for a PhD fellowship.
URI: http://hdl.handle.net/10045/40801
ISSN: 1359-835X (Print) | 1878-5840 (Online)
DOI: 10.1016/j.compositesa.2014.08.015
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.compositesa.2014.08.015
Appears in Collections:INV - Física de la Materia Condensada - Artículos de Revistas
INV - LMA - Artículos de Revistas

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