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Evolutionary features of subsurface defects of single crystal diamond after dynamic friction polishing.pdf (2.76 MB)

Evolutionary features of subsurface defects of single crystal diamond after dynamic friction polishing

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journal contribution
posted on 2024-03-18, 11:37 authored by Sheng Ye, Yuting Zheng, Shangman Zhao, Jinlong Liu, Liangxian Chen, Haitao YeHaitao Ye, Xiaotong Zhang, Xiaoping Ouyang, Chengming Li, Junjun Wei

Due to the fatigue and continuous energy input during high-speed dynamic friction polishing (DFP), the diamond crystal beneath the polished surface (roughness <1 nm) can be distorted/cracked in varying degrees by adjusting the polishing process. In this study, the local amorphization, dislocation extension, and subsurface cleavage with the prolonging of sliding duration were examined in the nanoscale. Different to the localized distortion with sp2-π* states in the near-surface area (<10 nm) after 15 min DFP, continuous mechanical friction would give rise to the dislocation penetration (to >50 nm) and even preferential crystal cleavage with the non-diamond phase (distributing at the position in micrometers range).

Funding

National Natural Science Foundation of China (52302036)

Basic and Applied Basic Research Foundation of Guangdong Province (2021A1515110631)

National Natural Science Foundation of China (52172037)

Science and Technology Innovation Special Project of Foshan Government (BK20BE021, BK21BE004)

History

Author affiliation

College of Science & Engineering/Engineering

Version

  • VoR (Version of Record)

Published in

Functional Diamond

Volume

4

Issue

1

Publisher

Informa UK Limited

issn

2694-1112

eissn

2694-1120

Copyright date

2024

Available date

2024-03-18

Language

en

Deposited by

Professor Haitao Ye

Deposit date

2024-03-17

Rights Retention Statement

  • No

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