TY - GEN
T1 - Effect of microwave and conventional heating on sintering behavior of tungsten coated-copper powder
AU - Mondal, Avijit
AU - Agrawal, Dinesh
AU - Upadhyaya, Anish
PY - 2008
Y1 - 2008
N2 - W-Cu composites are most commonly used as electrical contacts and thermal management devices. In the W-Cu systems a large wetting angle of liquid copper, a high dihedral angle and almost negligible solubility between tungsten and copper make it difficult in achieving high density because densification during liquid phase sintering of W-Cu is limited to rearrangement of the W particles and solid-state sintering of the W skeleton. However, one of the methods of increasing densification is by employing Cu-coating on W powder which increases rearrangement leading to higher densification. This study examines the effect of heating mode (conventional and microwave) and temperature on the sinterability of specially prepared commercial W-15Cu (by weight) powder of approximately 2 μm particle size , supplied by Osram Sylvania, Towanda, USA. The densification behavior and properties of the samples sintered by two methods have been studied and compared.
AB - W-Cu composites are most commonly used as electrical contacts and thermal management devices. In the W-Cu systems a large wetting angle of liquid copper, a high dihedral angle and almost negligible solubility between tungsten and copper make it difficult in achieving high density because densification during liquid phase sintering of W-Cu is limited to rearrangement of the W particles and solid-state sintering of the W skeleton. However, one of the methods of increasing densification is by employing Cu-coating on W powder which increases rearrangement leading to higher densification. This study examines the effect of heating mode (conventional and microwave) and temperature on the sinterability of specially prepared commercial W-15Cu (by weight) powder of approximately 2 μm particle size , supplied by Osram Sylvania, Towanda, USA. The densification behavior and properties of the samples sintered by two methods have been studied and compared.
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M3 - Conference contribution
AN - SCOPUS:84863645171
SN - 9780979348884
T3 - Proceedings of the 7th International Conference on Tungsten, Refractory and Hardmaterials
SP - 3134
EP - 3143
BT - Proceedings of the 7th International Conference on Tungsten, Refractory and Hardmaterials
T2 - 7th International Conference on Tungsten, Refractory and Hardmaterials 2008
Y2 - 8 June 2008 through 12 June 2008
ER -