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Investigation on Sintering Mechanism of Nanoscale Tungsten Powder Based on Atomistic Simulation
Amitava Moitra,Sungho Kim,Seong-Gon Kim,Seong Jin Park,Randall M. German,Mark F. Horstemeyer 한국소성가공학회 2010 기타자료 Vol.2010 No.6
Atomistic simulations focusing on sintering of crystalline tungsten powders at the submicroscopic level are performed to shed light on the processing on the nanoscale powders. The neck growth and shrinkage were calculated during these sintering simulations, so it is possible to extend these results to the global physical property evolution via sintering. The densification and grain growth during sintering were calculated with variations in temperature, pressure, particle configuration, additives, and crystalline misalignment between particles. These findings lay a foundation for a virtual approach to setting the processing cycles and materials design applicable to nanoscale powders.