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Interfacial frictional stresses and fracture toughness of biomorphic graphite/copper interfaces

Childers, A. S. and Brodnik, N. R. and Faber, K. T. (2016) Interfacial frictional stresses and fracture toughness of biomorphic graphite/copper interfaces. Materials Letters, 174 . pp. 106-109. ISSN 0167-577X. http://resolver.caltech.edu/CaltechAUTHORS:20160602-160330647

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Abstract

A fiber push-in test was adapted to measure the interfacial frictional stresses present in wood-derived biomorphic graphite/copper interpenetrating phase composites. Additionally, a sandwich composite was used to measure the interfacial fracture toughness of the copper/graphite system. Results indicate that due to poor wetting of copper on graphite, the surface roughness and extent of mechanical interlocking between the two phases determine the mechanical characteristics of the interface, and that the values are comparable to other metal-ceramic composite systems with limited bonding. A characterization of the mechanically bonded interfaces is vital to understanding load transfer, thermal cycling effects, contact resistance, and thermal conductivity.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.matlet.2016.03.065DOIArticle
http://www.sciencedirect.com/science/article/pii/S0167577X16303858PublisherArticle
Additional Information:© 2016 Elsevier B.V. Received 3 November 2015, Revised 2 March 2016, Accepted 12 March 2016, Available online 14 March 2016.
Subject Keywords:Copper; Carbon materials; Toughness; Interfaces; Composite materials
Record Number:CaltechAUTHORS:20160602-160330647
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160602-160330647
Official Citation:A.S. Childers, N.R. Brodnik, K.T. Faber, Interfacial frictional stresses and fracture toughness of biomorphic graphite/copper interfaces, Materials Letters, Volume 174, 1 July 2016, Pages 106-109, ISSN 0167-577X, http://dx.doi.org/10.1016/j.matlet.2016.03.065. (http://www.sciencedirect.com/science/article/pii/S0167577X16303858)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67593
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 Jun 2016 23:09
Last Modified:02 Jun 2016 23:09

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