Preparation of thin AlOx (0 ≤ x ≤ 1.5) films on gold and polycarbonate characterized by XPS, EPMA, AFM and TEM

Csanády, Ágnes; Pitton, Y.; Mathieu, H. J.; Kessler, K.; Fuchs, Richard; Textor, Marcus

doi:10.1002/sia.740210806

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…It implies that the electrons of aluminum transfer to the bonding oxygen to form interfacial Al–O bonds, which is consistent with our following DFT calculations. The Al–O band is also recognized and located at 532.80 eV in the O 1s spectra acquired at CFRTP-3 and CFRTP-HI45-3 (Figure c) . It is necessary to point out that the carbon fiber within CFRTP and CFRTP-HI would not react with 6061 due to the absence of Al–C and O–C contributions in XPS results.…”

Section: Resultsmentioning

confidence: 96%

Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

et al. 2023

ACS Appl. Mater. Interfaces

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The application of carbon-fiber-reinforced thermoplastic (CFRTP)/ metal hybrid structures is a vital step for realizing the lightweight design concepts in aerospace. However, the CFRTP/metal hybrid structures are usually not reliable enough in practical applications due to the high differences in chemical and physical properties between these two materials. The current work provides a bottom-up strategy of introducing heteroatoms into CFRTP/metal interfaces to reconstruct the interfacial chemical structures and thus manufacture high-reliability hybrid structures. Based on the principle of utmost using reaction sites at metal surfaces, the heteroatoms of oxygen and hydrogen are specially designed and introduced to the CFRTP/A6061-T6 (6061) interfaces by simple and green plasma polymerization. The introduced oxygen and hydrogen heteroatoms react with the aluminum and oxygen of the oxidation film at 6061 surfaces to produce great interfacial Al−O covalencies and hydrogen bonds. The reconstructing interfacial chemical structures strengthen the joint strength of CFRTP/6061 hybrid structures from 8.82 to 23.97 MPa. Our heteroatom introduction strategy is expected to get a fresh insight into the interfacial design concept and has several important implications for the future application of high-reliability CFRTP/metal hybrid structures.

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Section: Resultsmentioning

confidence: 96%

Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

et al. 2023

ACS Appl. Mater. Interfaces

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“…As shown in Figures and S3, for GLM, the Ga element in the Ga-rich film is in the chemical state of Ga 2 O 3 (1118.2 eV) and elemental Ga (1116.5 eV), and the ratio of the peak area between Ga 2 O 3 and Ga (1.97) indicates a high content of Ga 2 O 3 . However, for GA0.5, the Al element in the Al-rich film exists entirely in the form of metal oxides (AlO x : 75.8 eV; , Al 2 O 3 : 74.3 eV), and the O element mainly exists in the form of Al oxides (AlO x : 532.3 eV; Al 2 O 3 : 531.1 eV). The Ga element in the Al-rich film also exists in the chemical state of Ga 2 O 3 and elemental Ga, but the content of Ga 2 O 3 is almost equivalent to that of elemental Ga by calculating the peak area ratio (0.95).…”

Section: Resultsmentioning

confidence: 99%

Al-Doped Ga-Based Liquid Metal: Modification Strategy and Controllable High-Temperature Lubricity through Frictional Interface Regulation

et al. 2019

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Ga-based liquid metal (GLM) may be a potential heat-transfer material in many industries such as electronic devices and nuclear reactors, and thus, improving its lubricity is conducive to solving the friction and corrosion problems of the motion pairs served in the GLM medium. This paper proposes a modification strategy based on the conventional and large-scale mechanical milling to prepare Al-doped GLM successfully and regulates the GLM lubricity through controlling the frictional interface properties. It is found that at room temperature (∼20 °C), the Al element in the Al-doped GLM medium has a stronger adsorption capacity on the T91 surface, so the Al-rich film is formed on the frictional interfaces and reduces the wear of the T91 disk effectively compared to that in the GLM medium. However, the doping of Al is detrimental to the wear resistance of the T91 steel significantly at 400 °C by inhibiting the formation of the protective FeGa 3 film on the frictional interfaces, which readily appears at T91 frictional interfaces in the GLM medium. At 600 °C, Al atoms participate in the formation of a multilayer intermetallic film, thus improving the wear resistance again. This paper provides a new idea for preparing the metaldoped GLM and improving the lubricity of GLM, and it drives forward our understanding of the lubrication mechanisms of liquid lubricants.

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“…The impurity precipitates with two-or three-dimensional particles act as pinning sites for grain boundary migration, preventing normal grain growth for grains with unimodal distributions of the grain size and consistent textures [20]. Abnormal grain growth has been reported for a number of Al alloy systems in which normal grain growth is inhibited by the impurities [21][22][23]. In our previous experiment [24], the Al:Si films deposited at elevated T s exhibited larger σ rms values compared to the pure Al films prepared under identical deposition conditions.…”

Section: Methodsmentioning

confidence: 98%

Enhanced light-scattering properties of sputtered Ag/Al:Si bilayers deposited at a low substrate temperature – A potential back reflector for highly efficient flexible thin-film photovoltaic devices

Cho

Kim

Choi

et al. 2014

Solar Energy Materials and Solar Cells

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Preparation of thin AlO_x (0 ≤ x ≤ 1.5) films on gold and polycarbonate characterized by XPS, EPMA, AFM and TEM

Cited by 11 publications

References 16 publications

Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

Al-Doped Ga-Based Liquid Metal: Modification Strategy and Controllable High-Temperature Lubricity through Frictional Interface Regulation

Enhanced light-scattering properties of sputtered Ag/Al:Si bilayers deposited at a low substrate temperature – A potential back reflector for highly efficient flexible thin-film photovoltaic devices

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