Anomalous sublimation passivation of nanotwinned silver particles. Issue 5 (3rd May 2020)

• Record Type: Journal Article
• Authors: Sun, Yong; Wang, Jinming; Guo, Jianxin; Wang, Jin; Peng, Qiuming
• Is Part Of: Materials research letters. Volume 8:Issue 5(2020)
• Page Start: 195
• Page End: 200
• Publication Date: 2020-05-03
• Subjects: Sliver -- TEM -- DFT -- sublimation; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2020.1739155
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : Metal sublimation plays a crucial role in understanding natural phenomena, purification and advanced manufacturing. Herein, we report anomalous sublimation passivation of nanotwinned silver particles under e-beam irradiation through in situ transmission electron microscopy, wherein the sublimation velocity is reduced by three-quarters due to the formation of five-fold twins. Theoretical calculations reveal that this sublimation passivation mechanism is mainly related to the increment in sublimation energy by the presence of twin boundaries. GRAPHICAL ABSTRACT: IMPACT STATEMENT: Differing from traditional cognition of defect-assisted sublimation, anomalous sublimation passivation of nanotwinned silver particles under e-beam irradiation has firstly been identified in terms of TEM observations and DFT calculations.