RETRACTED: Study on the antioxidation properties and mechanisms of SiC/Si–ZrB2–CrSi2/SiC multilayer coating related to strain compatibility and stress distribution via XRD and Raman spectra

Quan, Huafeng; Luo, Ruiying; Wang, Lianyi; Yang, Huiyong; Sui, Shanying; Dong, Xiaohui; Huang, Peng

doi:10.1016/j.compositesb.2021.109452

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…Compared with TiCu-P, different hierarchical topographies broadened α-Ti peaks, which was caused by the lattice strain as a result of the residual compressive stress introduced during the sandblasting. 27 The lattice strains were calculated based on the Williamson−Hall (W−H) theory 28 according to eq 1. The peak broadening was linear to the lattice strain, and the lattice strains were obtained from the slope in Figure S1d; the fitting curve and the detailed parameters are listed in Table S1.…”

Section: Resultsmentioning

confidence: 99%

Mechanisms of Hierarchical Topographies Tuning Bacteria and Cell Biological Responses to the Surfaces of Pure Titanium and Cu-Bearing Titanium Alloy

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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The competition between cells integration and bacterial colonization determines the fate of implantations. To reveal the effects of clinical implant topographies on osteoblast differentiation and bacterial biofilm formation, a series of micron/submicron/nano-hierarchical structures were created at pure titanium surfaces (Ti-I, Ti-II, Ti-III). It was found that the hierarchical structures promoted MC3T3-E1 cell differentiation through contact guidance and Ti-II processed the best osteogenic ability. Undesirably, hierarchical surfaces further accelerated the biofilm formation due to submicron structures with low interaction. To reduce the risk of bacterial infections, hierarchical structures were prepared on the antibacterial Cu-bearing titanium alloy surfaces (TiCu-I, TiCu-II, TiCu-III). Hierarchical topographies not only endowed TiCu surfaces with antibacterial trapping characteristics due to CuO doped in the outermost oxides layer but also shifted the corrosion behavior of TiCu alloy into activation–passivation, increasing the Cu-ion release rate and further promoting the osteogenic differentiation. TiCu-III possessed excellent antibacterial trapping ability and optimal osteogenic action. Finally, in the osteomyelitis-modeled mice, hierarchical topographies aggravated the bacterial infection around Ti implants, which entirely lost the osseointegration, while all of the TiCu surfaces significantly inhibited the infection and accelerated the formation of new bone tunnels around the implants. In vivo studies successfully confirmed the tuning mechanism of hierarchical topographies on the biological responses of bacteria and cells to the Ti and TiCu alloys, which would pave the way to develop novel biofunctionalized metal implants.

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Section: Resultsmentioning

confidence: 99%