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Cold compression behavior of alumina particles with different grain sizes under high pressure DOI: 10.1016/j.ceramint.2023.07.141 |
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Cold compression behavior of alumina particles with different grain sizes under high pressure By Liu, FM (Liu, Fangming) [1] ; Zhang, JW (Zhang, Jiawei) [2] ; Liu, PP (Liu, Pingping) [1] ; He, DW (He, Duanwei) [3] Source Volume49Issue19Page32324-32330 DOI10.1016/j.ceramint.2023.07.141 Published OCT 1 2023 Indexed 2024-02-04 Document Type Article Jump to Abstract The cold compression behavior of alumina samples, with average grain sizes of 350 nm, 7.9 mu m, and 18.2 mu m, has been investigated under non-hydrostatic conditions by using a diamond anvil cell. After treatment with various pressures, the in situ axial X-ray diffraction patterns, transparency variations, and microstructures after decompression of the samples were also analyzed. The results showed that the submicron grains became easily translucent. The larger the grain size, the higher the pressure needed to compress the sample to transparency. On the other hand, for a similar grain size, the various geometrical shapes of the grains did not affect the pressure dependency on transparency. The elastoplastic characteristics of the alumina grains of different sizes under cold compression were found to be consistent with the transparency variation. As a conclusion, alumina particles under cold compression were found to be applicable in the pressure-assisted preparation of alumina transparent ceramics. Keywords Author KeywordsAluminaCold compressionX-ray diffractionPlastic deformationTransparent ceramics Keywords PlusTRANSPARENT ALUMINAPOLYCRYSTALLINE ALUMINAYIELD STRENGTHCERAMICSTRANSMITTANCEAL2O3SPSNANOPARTICLESEVOLUTIONSTANDARD Author Information Corresponding Address Liu, Fangming (corresponding author) Yangtze Normal Univ, Coll Mat Sci & Engn, Chongqing Key Lab Extraordinary Bond Engn & Adv Ma, Chongqing 408100, Peoples R China Corresponding Address He, Duanwei (corresponding author) Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China Addresses 1 Yangtze Normal Univ, Coll Mat Sci & Engn, Chongqing Key Lab Extraordinary Bond Engn & Adv Ma, Chongqing 408100, Peoples R China 2 Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing, Peoples R China 3 Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China E-mail Addresses fangmingliu@yznu.edu.cnduanweihe@scu.edu.cn Categories/ Classification Research AreasMaterials Science Web of Science Categories Materials Science, Ceramics Funding Funding agency Grant number Science Foundation of Chongqing, China cstc2020jcyj-msxmX0518 Language English Accession Number WOS:001148800500001 ISSN 0272-8842 eISSN 1873-3956 IDS Number FW1O4 |
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