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首页> 外文期刊>Philosophical Magazine Letters >Effects of loading modes on densification efficiency of spark plasma sintering: sample study of zirconium carbide consolidation
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Effects of loading modes on densification efficiency of spark plasma sintering: sample study of zirconium carbide consolidation

机译：加载模式对火花血浆烧结致密效率的影响：碳化锆固结的样品研究

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摘要

Theoretical studies on the densification kinetics of the new spark plasma sinter-forging (SPS-forging) consolidation technique and of the regular SPS have been carried out based on the continuum theory of sintering. Both modelling and verifying experimental results indicate that the loading modes play important roles in the densification efficiency of SPS of porous ZrC specimens. Compared to regular SPS, SPS-forging is shown to be able to enhance the densification more significantly during later sintering stages. The derived analytical constitutive equations are utilised to evaluate the high-temperature creep parameters of ZrC under SPS conditions. SPS-forging and regular SPS setups are combined to form a new SPS hybrid loading mode with the purpose of reducing shape irregularity in the SPS-forged specimens. Loading control is imposed to secure the geometry as well as the densification of ZrC specimens during hybrid SPS process.
机译：基于烧结的连续性理论，进行了关于新的火花等离子体烧结锻造（SPS锻造）固结技术和常规SPS的致密化动力学的理论研究。 建模和验证实验结果表明，加载模式在多孔ZRC样本SP的致密化效率中起重要作用。 与常规SPS相比，SPS锻造被证明能够在以后的烧结阶段更显着提高致密化。 衍生的分析本构方程用于评估SPS条件下ZRC的高温蠕变参数。 SPS-utging和常规SPS设置组合以形成新的SPS混合加载模式，目的是降低SPS锻造标本中的形状不规则性。 施加加载控制以确保几何形状以及杂交SPS过程中ZRC样本的致密化。

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