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Thermal expansion co‐efficient of nanotube–metal composites
Author(s) -
Uddin Sheikh M.,
Mahmud Tanvir,
Wolf Christoph,
Glanz Carsten,
Kolaric Ivica,
Hulman Martin,
Neubauer Erich,
Roth Siegmar
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982295
Subject(s) - materials science , thermal expansion , composite material , tec , carbon nanotube , sintering , composite number , thermal , atmospheric temperature range , metal , carbon nanotube metal matrix composites , nanotube , metallurgy , ionosphere , physics , astronomy , meteorology
Thermal expansion exhibits considerable challenges developing residual stresses at the interfaces of different materials treated at high temperature. Electrical devices containing materials with different thermal expansion behaviour very often suffer this problem. Thermal expansion co‐efficient (TEC) of different metals can be tuned by using carbon nanotube (CNT). Metal matrix composites (MMCs) using CNT are fabricated by hot‐press sintering method and TEC of the composites are investigated throughout a wide range of temperature (−155 to 275 °C). Reduction of TEC of the composite materials was observed up to 20% compared to that of pure metals. The effect of CNTs in the matrix materials and the mechanism behind the improvement are explained from the microscopic investigation of the composites.