多弧离子镀制备的耐事故燃料包壳铬涂层晶粒结构研究
作者:
作者单位:

1.中国核动力研究设计院反应堆燃料及材料重点实验室;2.四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室

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中图分类号:

TG178;O484.1

基金项目:

国家自然科学基金 (U2067218)


Granular structure of chromium coatings prepared by arc ion plating for accident-tolerant fuel cladding
Author:
Affiliation:

1.Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China;2.Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University

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    摘要:

    本文通过从几十微米到几埃的多尺度表征展示了多弧离子镀制备铬涂层的详细结构. 经XRD,SEM,FIB,TEM和 HRTEM表征,结果显示该涂层是一种多重结构,包括表面上的微米级颗粒、缺陷带钉扎的微米或次微米级液滴、以堆垛层错为晶界的柱状晶、以刃位错和螺型位错为区分的微晶、位错末端的原子畸变以及原子排列无序化的区域. 这些结构通过改变涂层的结晶度,影响了晶格常数、表面粗化和FIB溅射裂纹. 此外,通过分析HTEM照片,确定了这些堆垛层错和位错的类型. 最后,讨论了沉积参数对这些晶粒结构的影响.

    Abstract:

    In this paper, the detailed structure of chromium coating prepared by multi-arc ion plating is shown by multi-scale characterization from about tens of microns to several angstroms. Characterized by XRD, SEM, FIB, TEM and HRTEM, the coatings show a multiple configuration including the micron-sized particles on the surface, the micron or submicron-sized droplets pinned by defect bands around, the columnar grains with stacked faults as boundaries, the ambiguous crystallites differentiated with edge and screw dislocations, the atomic distortions on the ends of these dislocations, and some disordered regions. These structures are found to affect the crystal constant, surface coarsening, and FIB-sputtered cracks by changing the coating crystallinity. In addition, the types of stacking faults and dislocations are confirmed by analyzing the HRTEM images. And finally, the effects of depositing parameters on the granular structure are also discussed.

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引用本文格式: 刘绍强,宫文娟,马赵丹丹,陈寰,王静,张瑞谦,邹宇,杨吉军,展长勇. 多弧离子镀制备的耐事故燃料包壳铬涂层晶粒结构研究[J]. 四川大学学报: 自然科学版, 2022, 59: 035002.

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  • 收稿日期:2022-01-19
  • 最后修改日期:2022-02-27
  • 录用日期:2022-03-03
  • 在线发布日期: 2022-05-25
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