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- W4238875648 abstract "Ti 3 SiC 2 is a member of the family of layered ternary compounds well known as the M n +1 AX n phases ( n = 1 – 3, or ‘MAX phases’) where M is a transition‐metal, A is an A‐group element and X is either carbon or nitrogen. These compounds have attracted increasing attention since they possess a unique combination of metallic and ceramic properties. They are elastically stiff, electrically and thermally conductive, relatively soft, damage tolerant and resistant to thermal shock. Therefore, Ti 3 SiC 2 have been proposed to be used in the generation IV nuclear reactors and several works were devoted to studying radiation damage by high energy heavy ions. Ti 3 SiC 2 is mainly synthesised by powder metallurgy. Nevertheless, it was recently shown that monocrystalline Ti 3 SiC 2 thin films onto 4H‐SiC can be formed by magnetron sputtering using Al and Ti co‐deposition on SiC at room temperature following by an annealing [1]. Ti 3 SiC 2 formation is based on interdiffusion processes between the substrate and the deposited layer. A layered hexagonal structure is obtained which consists of alternate near‐close‐packed layers of Ti 6 C octahedral interleafed with layers of Si atoms. Thin‐film of Ti 3 SiC 2 could become suitable for many applications such as electrical contacts, wear protective coatings and to produce the new 2D materials labelled MXène. It is then crucial to progress in the knowledge of the physical properties of Ti 3 SiC 2 thin‐film especially their behaviour under ion implantation. Light ion implantation (He, H) is commonly used to produce two dimensional defects in Si which are considered to be the precursors of cracks that are particularly interesting for the thin layer transfer technique well‐known as the smart‐cut process. The purpose of this work is to study the defects induced by light ion implantation (He, H) in Ti 3 SiC 2 thin‐film in order to create He/H‐platelets. The microstructural analysis of the implant Ti 3 SiC 2 thin films and their evolution under subsequent annealing will be performed by XRD and XTEM. First XTEM results (Fig. 1) show a high density of He‐platelets after low energy He implantation at medium fluence and subsequent annealing. Works are in progress for studying in more detailed the MAX phase and the He‐platelets. Results will be compared to a theoretical work who predicts that He atoms prefers staying near Si atoms [2]. The authors wish to acknowledge P. Guerin for his help during the film deposition and M. Marteau for He implantation experiments." @default.
- W4238875648 created "2022-05-12" @default.
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- W4238875648 date "2016-12-20" @default.
- W4238875648 modified "2023-09-30" @default.
- W4238875648 title "He-filled bi-dimensional defects in Ti3SiC2 MAX Phases" @default.
- W4238875648 cites W2006430688 @default.
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- W4238875648 doi "https://doi.org/10.1002/9783527808465.emc2016.6152" @default.
- W4238875648 hasPublicationYear "2016" @default.
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