The structure of nitrogenated carbon and its interaction with lubricant molecules

Dai, P.; Gao, Chao

doi:10.1109/20.706689

Cited by 6 publications

(2 citation statements)

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“…The signal monitored was at m/q ) 69. can be due in part to different hybridization of carbon atoms. The carbon films generally include a mixture of sp 3 , sp 2 and sp hybridized carbon atoms. 14 In addition there can be different functional groups present at the surface due to oxidation.…”

Section: Discussionmentioning

confidence: 99%

“…A number of different types of carbon films have been used or considered for use to protect the surfaces of data storage media. These include amorphous hydrogenated carbon (a-CH x ), amorphous nitrogenated carbon (a-CN x ), cathodic arc carbon (CAC), and ion-beam sputtered carbon (IBC). , These are sputtered or deposited by other methods onto the surface of the magnetic layer as thin films (<100 Å). The purpose of the carbon film is to provide wear protection for the magnetic layer if it comes into contact with the read−write head and to provide corrosion protection for the magnetic layer.…”

Section: Introductionmentioning

confidence: 99%

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The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films

2000

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Fluorinated alcohols and fluorinated ethers adsorbed on carbon films have been studied in order to model the surface chemistry of Fomblin Zdol lubricants on the carbon-coated surfaces of magnetic data storage media. The model compounds used were 2,2,2-trifluoroethanol (CF3CH2OH), which is representative of the end groups of Fomblin Zdol, and perfluorodiethylether (CF3CF2)2O, which represents the main chain of Fomblin Zdol. Temperature-programmed desorption (TPD) spectroscopy was used to measure the desorption energies of these compounds on a variety of different carbon films. Desorption energies were measured on amorphous hydrogenated carbon (a-CHx), amorphous nitrogenated carbon (a-CNx), cathodic arc carbon (CAC), and ion-beam sputtered carbon (IBC). On all carbon film surfaces the desorption energy of CF3CH2OH is higher than that of (CF3CF2)2O. The desorption energy of CF3CH2OH is higher on the a-CNx films than on the other carbon films; however, the desorption energy of (CF3CF2)2O does not depend on the type of carbon. Finally, the desorption energies are dependent upon CF3CH2OH and (CF3CF2)2O coverage, indicating that the carbon films are heterogeneous and expose binding sites with a range of affinities for adsorption. Systematic measurements of the desorption energies over a range of coverages have been used to map out the heterogeneity of all the carbon films.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films

2000

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Deposition of ultrathin organic films on various carbon surfaces using vacuum vapor deposition

Choi¹,

Kato²,

Nakao³

et al. 2006

Surface & Interface Analysis

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In this report, we describe the bonding characteristics of a model lubricant, perfluoro-1-decanol (P1D), having a hydroxyl end group, toward N and Si incorporated amorphous carbon surfaces. The P1D is deposited on the carbon surfaces using vacuum vapor deposition, and the P1D bonding toward the carbon surfaces is compared to that deposited by immersion, a traditional deposition method. The P1D molecules are strongly bonded to the carbon surfaces by the vacuum vapor deposition, whereas the bondings are minimal in the case of immersion. The N and Si incorporation enhances the bonding of P1D toward the carbon surfaces. This is due to the change in the surface structure of the hydrogen-terminated carbon surfaces by N and Si incorporation into the carbon network, which increases the adsorption sites on the carbon surfaces.

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Enhanced methanol electro-oxidation activity of PtRu catalysts supported on heteroatom-doped carbon

Swaidan

et al. 2008

Electrochimica Acta

129

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The structure of nitrogenated carbon and its interaction with lubricant molecules

Cited by 6 publications

References 4 publications

The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films

The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films

Deposition of ultrathin organic films on various carbon surfaces using vacuum vapor deposition

Enhanced methanol electro-oxidation activity of PtRu catalysts supported on heteroatom-doped carbon

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The structure of nitrogenated carbon and its interaction with lubricant molecules

Cited by 6 publications

References 4 publications

The Interaction of CF3CH2OH and (CF3CF2)2O with Amorphous Carbon Films

The Interaction of CF3CH2OH and (CF3CF2)2O with Amorphous Carbon Films

Deposition of ultrathin organic films on various carbon surfaces using vacuum vapor deposition

Enhanced methanol electro-oxidation activity of PtRu catalysts supported on heteroatom-doped carbon

Contact Info

Product

Resources

About

The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films

The Interaction of CF₃CH₂OH and (CF₃CF₂)₂O with Amorphous Carbon Films