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Biomorphous Metal‐Ceramic‐Composites with High Coefficient of Friction
Author(s) -
Haas D.,
Fey T.,
Greil P.
Publication year - 2007
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200700137
Subject(s) - materials science , composite material , ceramic , infiltration (hvac) , alloy , friction coefficient , porosity , toughness , metal , fracture toughness , metallurgy
Metal ceramic composites were fabricated by Si‐Cu‐alloy infiltration into porous biocarbon preforms derived from medium density fiber board. β‐SiC and Si‐Cu 3 Si were found as the major reaction product phases with minor amounts of residual C. Increasing Cu content in the Si‐Cu infiltration melt was found to result in decreasing thickness of β‐SiC reaction layers both on the outer as well as inner (e.g. lumae) surfaces of the hollow biocarbon fibres. A high coefficient of friction of μ = 0.6 and a good wear resistance were obtained with an optimised compromise of infiltration behaviour and mechanical properties e.g. strength and toughness at a Si/Cu ratio of 75/25.