论文标题
纳米晶体W-5WT的火花等离子体烧结期间的局部孔隙演化辅助致密化。％MO合金
Localized pore evolution assisted densification during spark plasma sintering of nanocrystalline W-5wt.%Mo alloy
论文作者
论文摘要
目前的工作报告了不同原子迁移率在纳米晶体W-MO合金粉末的火花等离子体烧结过程中诱导局部孔的演化在致密化中的作用。在最高1600°C的非等温烧结过程中，使用扩张法研究了冷压缩铣削粉末的收缩（或膨胀）行为。随后，使用高达1600°C的火花等离子体烧结，将铣削的粉末致密至95％。在火花等离子体烧结过程中，由于动态进化的多孔结构而引起的增强的局部焦耳加热可能归因于致密性。
The present work reports the role of different atomic mobility induced localized pore evolution on densification during spark plasma sintering of nanocrystalline W-Mo alloy powder. The shrinkage (or expansion) behavior of cold compacted milled powders was studied using dilatometry during non-isothermal sintering up to 1600 °C. Subsequently, the milled powders were densified to ~95% relative density using spark plasma sintering up to 1600 °C. The enhanced localized Joule heating due to dynamically evolved porous structure could be attributed for the densification during spark plasma sintering.
