Optical characterization of hydrogen-free CeO2 doped DLC films deposited by unbalanced magnetron sputtering

Zhang, Zhenyu; Zhou, Hongxiu; Guo, Dongming; Gao, Hang; Kang, Ren Ke

doi:10.1016/j.apsusc.2008.08.002

Cited by 8 publications

(6 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Ce3d XPS spectra, as shown in Figure A, showed the 3d 5/2 and 3d 3/2 transitions at the binding energy of 881.7 and 900 eV that the distance was about 18.3 eV and the spectrum exhibited 2 associated satellite peaks at the binding energy of 904.3 and 885.8 eV. Therefore, it could confirm that the Ce existed in the form of metal oxide . Furthermore, the XPS C1s spectrum of the Cr/a‐C:H and (Cr,Ce)/a‐C:H carbon‐based films, as shown in Figure B, was deconvoluted into 3 Gaussian lines centered at 284.5, 285.4, and 286.9 eV corresponding to the sp 2 , sp 3 , and C–O bonds, respectively, whereas there were no Cr–C bonds according to characteristic the XPS C1s spectrum.…”

Section: Resultsmentioning

confidence: 87%

“…Moreover, the effect on microstructure and performance of trace rare earth elements doping in DLC films has been reported, and DLC films could exhibit good tribological properties . It is reported that rare earth element is doped into DLC films where it would be dissolved within the DLC amorphous matrix but not formed nanocrystallines . Therefore, co‐doping rare earth element Ce into Me‐DLC films may also have a positive effect on the friction‐reduction and antiwear properties on the surface of cemented WC.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Zhou

Liu

Wang

2017

Surf Interface Anal

View full text Add to dashboard Cite

Cemented tungsten carbide (WC) has widely served in modern industry because of its outstanding characteristics, while it could suffer from severely wear both under ambient air and water environments. To exploit a novel carbon-based film should be a feasible way to modify the surface of cemented WC and overcome these shortcomings. In the present study, the Cr/Ce co-incorporated (Cr,Ce)/a-C:H carbon-based film was successfully deposited on cemented WC. The microstructure and mechanical properties of films were systematically characterized, and their tribological behaviors were tested in ambient air and deionized water environment. The results showed that (Cr,Ce)/a-C:H film dominated by the typical amorphous structure and the doping Cr existed with the metallic Cr nanocrystallites as well as Ce formed CeO 2 . The (Cr,Ce)/a-C:H film could possess good mechanical performances, which could own higher hardness, elastic module, low internal stress, and better adhesive strength. Especially, the as-prepared (Cr,Ce)/a-C:H film could present relatively lower friction coefficient and wear rate compared to uncoated cemented WC both under ambient air and deionized water environment, indicating that the Cr/Ce co-doped (Cr,Ce)/a-C:H film could be an effective method to modify the surface of cemented WC so as to improve the friction and wear performances of cemented WC materials.

show abstract

Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Zhou

Liu

Wang

2017

Surf Interface Anal

View full text Add to dashboard Cite

show abstract

“…These features are consistent with the characteristics of CeO 2 . [18][19][20] The C 1s XPS spectra, as shown in Fig. 3(b), can be deconvoluted into three Gaussian lines centered at 284.5 eV, 285.4 eV and 286.9 eV corresponding to the sp 2 -C, sp 3 -C, and C-O bonds, respectively.…”

Section: Composition and Microstructurementioning

confidence: 99%

“…[13][14][15] In particular, it was reported that co-doping in DLC films could improve their tribological performance, e.g., aluminum/titanium, aluminum/chromium, copper/titanium co-doped DLC films. [16][17][18] DLC doping with rare earth elements is an important direction of research in surface engineering. The resulting DLC films could exhibit good internal stress, friction coefficient, and wear rate properties.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rare earth Ce-modified (Ti,Ce)/a-C:H carbon-based film on WC cemented carbide substrate

2017

View full text Add to dashboard Cite

WC cemented carbide suffers severe wear in water environments. A novel carbon-based film could be a feasible way to overcome this drawback. In this study, a rare earth Ce-modified (Ti,Ce)/a-C:H carbon-based film is successfully prepared on WC cemented carbide using a DC reactive magnetron sputtering process. The microstructure, mechanical properties, and tribological behavior of the as-prepared carbon-based film are systematically investigated. The results show that the doping Ti forms TiC nanocrystallites that are uniformly dispersed in the amorphous carbon matrix, whereas the doping Ce forms CeO2 that exists with the amorphous phase in the co-doped (Ti,Ce)/a-C:H carbon-based film. The mechanical properties of this (Ti,Ce)/a-C:H film exhibit remarkable improvements, which could suggest higher hardness and elastic modulus as well as better adhesive strength compared to solitary Ti-doped Ti/a-C:H film. In particular, the as-prepared (Ti,Ce)/a-C:H film presents a relatively low friction coefficient and wear rate in both ambient air and deionized water, indicating that (Ti,Ce)/a-C:H film could feasibly improve the tribological performance of WC cemented carbide in a water environment.

show abstract

One‐step electrodeposition of amorphous carbon films containing WO₃ with high conductivity and good wettability

Wan

Wang

Xue

2010

Surface & Interface Analysis

View full text Add to dashboard Cite

Tungsten trioxide-incorporated hydrogenated amorphous carbon (WO 3 /a-C : H) films have been fabricated on a single-crystal silicon wafer by liquid phase electrodeposition using methanol as carbon source and tungsten carbonyl as incorporated reagent. The morphology, composition and structure of the films have been investigated by SEM, XPS, Raman scattering spectroscopy, Fourier transform infrared spectroscopy (FTIR) and Transmission electron microscope (TEM), respectively. The effects of WO 3 incorporation on the electrical and wetting properties were studied in detail. The characterization results showed that tungsten trioxide nanocrystalline particles with diameters in the range of 10-20 nm were homogenously embedded in the amorphous carbon films. Also, the electrical conductivity and wetting ability of the films were strongly improved due to the contribution of the tungsten trioxide.

show abstract

Optical characterization of hydrogen-free CeO2 doped DLC films deposited by unbalanced magnetron sputtering

Cited by 8 publications

References 38 publications

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Rare earth Ce-modified (Ti,Ce)/a-C:H carbon-based film on WC cemented carbide substrate

One‐step electrodeposition of amorphous carbon films containing WO₃ with high conductivity and good wettability

Contact Info

Product

Resources

About

Optical characterization of hydrogen-free CeO2 doped DLC films deposited by unbalanced magnetron sputtering

Cited by 8 publications

References 38 publications

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Exploiting carbon-based (Cr,Ce)/a-C:H nanocomposite film on cemented WC

Rare earth Ce-modified (Ti,Ce)/a-C:H carbon-based film on WC cemented carbide substrate

One‐step electrodeposition of amorphous carbon films containing WO3 with high conductivity and good wettability

Contact Info

Product

Resources

About

One‐step electrodeposition of amorphous carbon films containing WO₃ with high conductivity and good wettability