Quantitative, nanoscale mapping of sp2 percentage and crystal orientation in carbon multilayers

Bosman, Michel; Keast, V. J.; Watanabe, Masashi; McCulloch, D. G.; Shakerzadeh, Maziar; Teo, Edwin Hang Tong; Tay, Beng Kang

doi:10.1016/j.carbon.2008.09.033

Cited by 27 publications

(17 citation statements)

References 16 publications

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“…Recent studies show that DLC coatings have the desired properties to be used as the surface of the endoprosthesis head and stem [3,5,7,10,12,17]. DLC coatings were discovered in 1971 by Aisenberg and Chabot, who obtained hydrogen-free amorphous carbon while cooling a low-energy carbon ion beam in argon [5,13,16,22,23]. The discovery proved to be ground-breaking, and the technologies of their preparation are still being developed.…”

Section: Introductionmentioning

confidence: 99%

“…There are many surface engineering methods that can be used to modify the physical and chemical properties of artificial joints and extend their service life. They include fluorescent processing, laser processing, sol-gel methods, physical vapour deposition, chemical vapour deposition, thermal spraying, electrophoresis, electroplating or a combination of these [1,13,[19][20][21]. Each technique will have a different effect on the chemical composition, structure and properties of the surface and, therefore, a different application will be achieved.…”

Section: Introductionmentioning

confidence: 99%

“…Amorphous carbon materials exhibit large differences in structure. The ratio of sp 2 to sp 3 bonds is the major factor defining the properties of amorphous materials [1,6,13,15]. Amorphous carbon with significant amounts of sp 3 hybridized carbon atoms is known as DLC.…”

Section: Introductionmentioning

confidence: 99%

“…The superb mechanical and tribological characteristics, high surface smoothness and high biocompatibility make DLC a material highly recommended for biotribological applications [3,[7][8][9][10][11][12]. DLC coatings deposited on metal elements prove extremely useful in implants, because of their high resistance to wear and other surface properties, such as low surface energy and chemical passivity, which prevent blood coagulation and promote adhesion of osteoblasts, especially in corrosive environments [13][14][15][16][17]. The purpose of this study was to analyze superhard, antiwear DLC coatings deposited by PACVD on a CoCrMo alloy, a material commonly used for a hip endoprosthesis.…”

Section: Introductionmentioning

confidence: 99%

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Diamond-like carbon coatings in biotribological applications

Madej¹,

Ozimina²,

Kurzydłowski³

et al. 2016

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This paper presents results of the structure analysis and tribological testing of a-C:H type diamond-like carbon (DLC) coatings deposited by Plasma Assisted Chemical Vapour Deposition (PACVD) on CoCrMo specimens. The DLC coatings were selected because of their good biocompatibility and high resistance to corrosion and wear. The surface structure and elemental composition were determined using scanning and transmission electron microscopy. The tribological tests of a cobalt-based alloy disk, or alternatively, a cobalt-based alloy disk with a diamond-like carbon coating, and an alumina ball were determined using a ball-on-disk tribometer under dry friction and lubricated friction conditions. Wear resistance was studied for a pin-on-plate tribological system: a polymeric pin made of ultra-high-molecular-weight polyethylene (UHMWPE) and a CoCrMo plate coated with DLC. The testing was conducted in lubricated friction conditions using Ringer's solution as a lubricant. The test results show that the application of DLC coatings definitely improves the service life of the surface. The DLC coatings were characterized by lower wear resistance and higher corrosion resistance than the CoCrMo alloy.K e y w o r d s : diamond-like carbon,

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diamond-like carbon coatings in biotribological applications

Madej¹,

Ozimina²,

Kurzydłowski³

et al. 2016

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show abstract

“…In the recent thirty years, considerable progress has been made in the research and the application of diamond and diamond-like carbon coatings produced with the PVD and CVD methods, the discovery of fullerenes, carbon nanotubes, and single--layer graphenes [1]. Amorphous carbon is also increasingly used and has been reported suitable for coatings of orthopedic prosthesis.…”

Section: Introductionmentioning

confidence: 99%

The properties of diamond-like carbon coatings used for artificial joints

Madej¹,

Ozimina²,

Piwoński³

et al. 2021

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The paper presents the results of the tribological tests for materials used in elements of hip and knee endoprostheses. The tests were conducted for a Co-Cr-Mo alloy and the same material with a diamond-like coatings (DLC) coating produced by applying the plasma assisted chemical vapor deposition (PACVD) method. The materials to be tested were selected because of their good biocompatibility and high resistance to corrosion and sliding wear. The coating structure was determined by applying scanning electron and atomic force microscopes. The tribological characteristics were obtained with a T-17 tester operating in the pin-on-plate configuration under lubricated friction conditions. The friction pair consisted of a cobalt-based alloy plate, or alternatively, a cobalt-based alloy plate with a diamond-like carbon coating, and an ultra-high molecular weight polyethylene (UHMWPE) pin. The model lubricant used in the tests was Ringer's solution. The results indicated that the mechanisms of wear of the endoprosthesis elements were dependent mainly on the material used for the working surfaces in the friction joint. The wear resistance and friction coefficient of a cobalt-based alloy disc, or alternatively, a cobalt-based alloy disc with a diamond-like carbon coating, and an alumina ball were also determined by means of a T-01M tester during technically dry friction and lubrication in Ringer's solution. The comparative analysis confirmed different tribological effectiveness of the cobalt-based alloy and DLC coatings during friction. K e y w o r d s :

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High‐Resolution Scanning Transmission Electron Microscopy (HRSTEM) Techniques: High‐Resolution Imaging and Spectroscopy Side by Side

et al. 2012

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This work presents an overview of high-resolution scanning transmission electron microscopy (HRSTEM) techniques and exemplifies the novel quantitative characterization possibilities that have emerged from recent advances in these methods. The synergistic combination of atomic resolution imaging and spectroscopy provided by HRSTEM is highlighted as a unique feature that can provide a comprehensive analytical description of material properties at the nanoscale. State-of-the-art high-angle annular dark field and annular bright field examples are depicted as well as the use of X-ray energy-dispersive spectroscopy and electron energy-loss spectroscopy for probing samples properties at the atomic scale. In addition, promising techniques such as cathodoluminescence, confocal HRSTEM, and diffraction mapping are introduced. The presented examples and results indicate that HRSTEM-related techniques are fundamental tools for comprehensive assessment of properties at the atomic scale.

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Quantitative, nanoscale mapping of sp2 percentage and crystal orientation in carbon multilayers

Cited by 27 publications

References 16 publications

Diamond-like carbon coatings in biotribological applications

Diamond-like carbon coatings in biotribological applications

The properties of diamond-like carbon coatings used for artificial joints

High‐Resolution Scanning Transmission Electron Microscopy (HRSTEM) Techniques: High‐Resolution Imaging and Spectroscopy Side by Side

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