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Preparation and thermal properties of zirconium tungstate/copper composites
Author(s) -
Yan X.,
Cheng X.,
Xu G.,
Wang C.,
Sun S.,
Riedel R.
Publication year - 2008
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200800322
Subject(s) - materials science , thermal expansion , copper , composite material , thermal conductivity , powder metallurgy , volume fraction , sintering , atmospheric temperature range , volume (thermodynamics) , metallurgy , thermodynamics , physics
ZrW 2 O 8 /Cu composites were prepared by the powder metallurgy method. Electroless plating was used to deposit copper on ZrW 2 O 8 powder before sintering. The thermal expansion and thermal conductivity of composites were measured in the temperature range from 25 o C to 200 o C and compared with those predicted from various theoretical models. The results show that the coefficient of thermal expansion of ZrW 2 O 8 / Cu composites with a different volume fraction of ZrW 2 O 8 is greater than the theoretically calculated value. The thermal conductivities of ZrW 2 O 8 / Cu composites increase with a higher copper content and decrease upon elevated temperature. The thermal conductivity of composites with a different volume fraction of ZrW 2 O 8 is lower than the theoretically calculated value.