Electron microscopy observation of electric field-assisted sintering of stainless steel nanoparticles
Electron microscopy observation of electric field-assisted sintering of stainless steel nanoparticles
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DOI：
10.1007/s10853-020-05348-1
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发表时间：
2020-09
影响因子：
4.5
通讯作者：
Fei Wang;Qin Zhou;X. Li;Yongchul Yoo;M. Nastasi;B. Cui
中科院分区：
文献类型：
--
作者：
Fei Wang;Qin Zhou;X. Li;Yongchul Yoo;M. Nastasi;B. Cui
非原位和原位实验揭示了电流对不锈钢 316L 纳米颗粒电场辅助烧结 (EFAS) 过程的内在作用。我们设计并制造了一种基于硅芯片的新型装置，可安装到用于这些实验的透射电子显微镜的样品架中。使用扫描电子显微镜和透射电子显微镜，并结合电压和电流变化的同步测量，研究了 EFAS 过程中纳米颗粒形态和微观结构的演变。基于这些实验研究，提出了不锈钢 316L 纳米粒子 EFAS 过程的初步四阶段机制。
The intrinsic role of electrical current on the electric field-assisted sintering (EFAS) process of stainless steel 316L nanoparticles has been revealed by both ex situ and in situ experiments. A novel device on the Si chip has been designed and fabricated to fit into the sample holder of a transmission electron microscope for these experiments. The evolution of nanoparticle morphology and microstructures during the EFAS process has been studied using scanning electron microscopy and transmission electron microscopy, which has been combined with the simultaneous measurement of the electric voltage and current changes. A preliminary four-stage mechanism for the EFAS process of stainless steel 316L nanoparticles has been proposed based on these experimental investigations.