Within the past ten years, spark plasma sintering (SPS) has become an increasingly popular process for Mg manufacturing. In the SPS process, interparticle diffusion of compressed particles is rapidly achieved due to the concept of Joule heating. Compared to traditional and additive manufacturing (AM) techniques, SPS gives unique control of the structural and microstructural features of Mg components. By doing so, their mechanical, tribological, and corrosion properties can be tailored. Although great advancements in this field have been made, these pieces of knowledge are scattered and have not been contextualized into a single work. The motivation of this work is to address this scientific gap and to provide a groundwork for understanding the basics of SPS manufacturing for Mg. To do so, the existing body of SPS Mg literature was first surveyed, with a focus on their structural formation and degradation mechanisms. It was found that successful Mg SPS fabrication highly depended on the processing temperature, particle size, and particle crystallinity. The addition of metal and ceramic composites also affected their microstructural features due to the Zener pinning effect. In degradative environments, their performance depends on their structural features and whether they have secondary phased composites. In industrial applications, SPS'd Mg was found to have great potential in biomedical, hydrogen storage, battery, automotive, and recycling sectors. The prospects to advance the field include using Mg as a doping agent for crystallite size refinement and using bulk metallic Mg-based glass powders for amorphous SPS components. Despite these findings, the interactions of multi-composites on the processing-structure-property relationships of SPS Mg is not well understood. In total, this work will provide a useful direction in the SPS field and serve as a milestone for future Mg-based SPS manufacturing.

中文翻译：

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镁基合金的火花等离子烧结：微观结构、力学性能、腐蚀行为和摩擦学性能

在过去十年中，放电等离子烧结（SPS）已成为镁制造中越来越受欢迎的工艺。在 SPS 过程中，由于焦耳热的概念，压缩颗粒的颗粒间扩散迅速实现。与传统的增材制造 (AM) 技术相比，SPS 可以对镁组件的结构和微观结构特征进行独特的控制。通过这样做，可以定制它们的机械、摩擦和腐蚀特性。尽管这一领域已经取得了巨大的进步，但这些知识是分散的，并且没有被整合到一部著作中。这项工作的动机是解决这一科学差距，并为理解镁的 SPS 制造基础知识奠定基础。为此，首先对现有的 SPS Mg 文献进行了调查，重点关注其结构形成和降解机制。研究发现，成功的 Mg SPS 制造高度依赖于加工温度、颗粒尺寸和颗粒结晶度。由于齐纳钉扎效应，金属和陶瓷复合材料的添加也影响了它们的微观结构特征。在降解环境中，它们的性能取决于它们的结构特征以及它们是否具有二次相复合材料。在工业应用中，SPS 镁被发现在生物医学、储氢、电池、汽车和回收领域具有巨大潜力。该领域的发展前景包括使用镁作为掺杂剂来细化微晶尺寸，以及使用块体金属镁基玻璃粉末来制造非晶 SPS 组件。尽管有这些发现，但多种复合材料对 SPS Mg 加工-结构-性能关系的相互作用尚不清楚。总的来说，这项工作将为 SPS 领域提供一个有用的方向，并成为未来镁基 SPS 制造的里程碑。