TY - GEN
T1 - Microwave and conventional sintering of premixed and prealloyed tungsten heavy alloys
AU - Mondal, A.
AU - Upadhyaya, A.
AU - Agrawal, D.
PY - 2008
Y1 - 2008
N2 - Microwave sintering is fundamentally different from conventional sintering. In the microwave sintering process, the material is heated internally and volumetrically unlike in a conventional process where heat originates from an external heating source. Sintering cycle time for microwave sintering is much shorter as compared with the conventional sintering cycle. The rapid heating rate of microwave sintering greatly restricts tungsten grain coarsening, which resulted in fine tungsten grains distributed in Ni-Cu matrix. The aim of the present investigation is to study the sintering behavior of premixed and prealloyed 90W-7Ni-3Cu powders in both microwave and conventional furnaces. A comparative analysis has been made based on the sintered density, densification parameter, hardness and microstructures of the samples. The present investigation also includes the variation of matrix composition as a function of temperature by EPMA analysis.
AB - Microwave sintering is fundamentally different from conventional sintering. In the microwave sintering process, the material is heated internally and volumetrically unlike in a conventional process where heat originates from an external heating source. Sintering cycle time for microwave sintering is much shorter as compared with the conventional sintering cycle. The rapid heating rate of microwave sintering greatly restricts tungsten grain coarsening, which resulted in fine tungsten grains distributed in Ni-Cu matrix. The aim of the present investigation is to study the sintering behavior of premixed and prealloyed 90W-7Ni-3Cu powders in both microwave and conventional furnaces. A comparative analysis has been made based on the sintered density, densification parameter, hardness and microstructures of the samples. The present investigation also includes the variation of matrix composition as a function of temperature by EPMA analysis.
UR - http://www.scopus.com/inward/record.url?scp=63749124620&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63749124620&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:63749124620
SN - 9781605606217
T3 - Materials Science and Technology Conference and Exhibition, MS and T'08
SP - 2502
EP - 2515
BT - Materials Science and Technology Conference and Exhibition MS and T'08
T2 - Materials Science and Technology Conference and Exhibition, MS and T'08
Y2 - 5 October 2008 through 9 October 2008
ER -