论文标题
粉末压实构成参数的孔隙率依赖性：基于火花等离子体烧结测试的测定
Porosity dependence of powder compaction constitutive parameters: Determination based on spark plasma sintering tests
论文作者
论文摘要
粉末压实过程的建模，例如火花等离子体烧结（SPS），需要确定包括粘度模量在内的粒子材料的粘膜塑性变形行为。这些参数的建立通常需要进行漫长而困难的实验活动，特别是涉及几个热等静力的紧迫测试。提出了一种基于耦合的烧结和模具压实测试的更直接的方法，可以在常规的SPS设备中轻松进行。与经典的蠕变机制研究相比，这种全面的实验方法可以揭示原位多孔结构形态对烧结过程的影响。
The modeling of powder compaction process, such as spark plasma sintering (SPS), requires the determination of the visco-plastic deformation behavior of the particle material including the viscosity moduli. The establishment of these parameters usually entails a long and difficult experimental campaign which in particular involves several hot isostatic pressing tests. A more straightforward method based on the coupled sinter-forging and die compaction tests, which can be easily carried out in a regular SPS device, is presented. Compared to classical creep mechanism studies, this comprehensive experimental approach can reveal the in situ porous structure morphology influence on the sintering process.
