Effects of heavy-ion irradiation on the structure and anti-wear properties of polycrystalline diamond compacts for nuclear applications
The structural transitions and resultant changes in the tribological properties of HT/HP-sintered polycrystalline diamond compacts (PDCs) irradiated by 3.25 MeV Xe ions with ion fluence of 4.3 × 10−4.3 × 10 ions/cm have been examined using various characterization techniques. A significant destruction of sp bonds was observed when the damage increased to 0.5 dpa. Thereafter, with a further increase in the irradiation damage, the samples stepped into a quasi-saturation amorphous state at a threshold value of damage, critically depending on the size of diamond grains. Thereafter, no other difference could be found between the samples composed of diamond grains in different sizes, especially in terms of the chemical structure and lubrication performance in an ambient air atmosphere. Thanks to the irradiation-induced transitions of the morphology and chemical structures, the anti-wear property of the PDCs degraded significantly in a damage range of 0–3.5 dpa, and then kept stable in a quasi-saturation state. But overall, owing to the formation of lubricious tribofilms with a rich presence of multilayer graphene on sliding interfaces, the wear rates of all the quasi-saturation samples were below the value of 3.0 × 10 mm/N‧m, which suggests that the PDCs can be applied as one of the potential materials for solid lubrication in nuclear applications.
Shenzhen Fundamental Research Free -Exploring Project[JCYJ20 190809153205492] ; Guangdong Basic and Applied Basic Reuter Foundation[2022A1515011725] ; Shenzhen Municipal Stability Support Plan ; National Natural Science Foundation of China ; Fundamental Key Research Project of Shenzhen[JCYJ20210324115806017]
|WOS Research Area|
Engineering ; Materials Science
Engineering, Mechanical ; Materials Science, Multidisciplinary
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Materials Science and Engineering|
1.Institute of Semiconductor Manufacturing Research,Shenzhen University,Shenzhen,Guangdong,518060,China
2.College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen,Guangdong,518060,China
3.Institute of Microelectronics,Shenzhen University,Shenzhen,Guangdong,518060,China
4.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
5.Academy for Adcanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
6.School of Engineering and Technology,China University of Geosciences (Beijing),Beijing,100083,China
7.State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou,730000,China
Yu，Junhua,Liu，Yuhang,Xu，Jiao,et al. Effects of heavy-ion irradiation on the structure and anti-wear properties of polycrystalline diamond compacts for nuclear applications[J]. WEAR,2023,518-519.
Yu，Junhua.,Liu，Yuhang.,Xu，Jiao.,Liang，Wenjun.,Yue，Wen.,...&Wang，Xujin.(2023).Effects of heavy-ion irradiation on the structure and anti-wear properties of polycrystalline diamond compacts for nuclear applications.WEAR,518-519.
Yu，Junhua,et al."Effects of heavy-ion irradiation on the structure and anti-wear properties of polycrystalline diamond compacts for nuclear applications".WEAR 518-519(2023).
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