Journal ArticleDOI
Heat capacity of hydrogenated diamond-like carbon films
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TLDR
In this paper, the authors used differential scanning calorimetry to measure the heat capacity of diamond-like carbon (DLC) film prepared by a plasma immersion ion processing method.Abstract:
We have used differential scanning calorimetry to measure the heat capacity of diamond-like carbon (DLC) film prepared by a plasma immersion ion processing method. The same calorimeter was used to measure the heat capacity of single crystal natural diamond and of high purity graphite. The amount of atomic hydrogen trapped in the DLC films was determined by elastic-recoil-detection spectrometry. The present data and literature values were used to deduce an expression for the specific heat that factors out the contribution from the sp3/sp2 bonding and from the atomic hydrogen trapped in the carbon. The data shows that the hydrogen contribution to the specific heat of carbon is independent of the sp3/sp2 bonding and amounts to about 0.63kB per hydrogen atom. We propose a simple method to determine the sp3/sp2 bonding ratio in hydrogenated DLC films based on measuring the specific heat and the hydrogen content of the sample.read more
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Interface-mediated extremely low thermal conductivity of graphene aerogel
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Graphene oxides dispersing and hosting graphene sheets for unique nanocomposite materials.
Leilei Tian,Parambath Anilkumar,Li Cao,Chang Yi Kong,Mohammed J. Meziani,Haijun Qian,L. Monica Veca,Tim J. Thorne,Kenneth N. Tackett,Travis Edwards,Ya-Ping Sun +10 more
TL;DR: Graphene oxides apparently represent a unique class of two-dimensional polymeric materials for potentially "all-carbon" nanocomposites, among others, which may find technological applications independent of those widely proclaimed for graphene sheets.
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Flexible graphene-graphene composites of superior thermal and electrical transport properties.
Zhi-Ling Hou,Wei-Li Song,Ping Wang,Mohammed J. Meziani,Chang Yi Kong,Ankoma Anderson,Halidan Maimaiti,Gregory E. LeCroy,Haijun Qian,Ya-Ping Sun +9 more
TL;DR: This work fabricated directly from few-layer graphene sheets, avoiding rGOs completely and resulting graphene-graphene composites were of a metal-like appearance and mechanically flexible, exhibiting superior thermal and electrical transport properties.
Journal ArticleDOI
The Influence of DLC Coating on EHL Friction Coefficient
TL;DR: In this paper, a numerical simulation model is developed to investigate if there is a possibility that the hard, thin diamond-like carbon (DLC) coating is affecting the friction coefficient in an EHL contact due to thermal effects caused by the different thermal properties of the coating compared to the substrate.
Journal ArticleDOI
Architecture of superthick diamond-like carbon films with excellent high temperature wear resistance
TL;DR: In this paper, a plasmaenhanced chemical vapor deposition system was used to deposit super thick diamond-like carbon (DLC)-based films ((Si x -DLC/Si y-DLC) n ).
References
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Book
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TL;DR: In this article, the first law of thermodynamics and the third law of Nernst heat theorem are used to construct tables of thermochemical data of pure substances, which are then used for thermodynamic calculations.
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Thermochemical properties of inorganic substances
Ihsan Barin,Ottmar Knacke +1 more
TL;DR: In this paper, a volume of tables conveying the thermochemical parameters of more than 2000 substances, cover enthalpy, entropy, chemical potential and Planck's function, and commentaries on the chemical reactions of the relevant component and indications of stability/metastability.
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Handbook of modern ion beam materials analysis
Joseph R. Tesmer,Michael Nastasi +1 more
TL;DR: The Handbook of Modern Ion Beam Materials Analysis, Second Edition is a compilation of updated techniques and data for use in the ion-beam analysis of materials, written and compiled by over 30 leading authorities in the field of ion beam analysis.
Journal ArticleDOI
Heat Capacity of Diamond at High Temperatures
TL;DR: In this article, the enthalpy of gem diamonds has been measured from 273° to 1073°K using a ''drop'' method and a Bunsen ice calorimeter, and the derived heat capacity values, which are believed to be accurate to ± 0.5%, are used to calculate the thermal functions of diamond above 298.15°K.
Journal ArticleDOI
Specific heat of single-, poly- and nanocrystalline diamond
C. Moelle,Matthew Werner,F. Szücs,D. Wittorf,M. Sellschopp,J. von Borany,Hans-Jörg Fecht,Colin Johnston +7 more
TL;DR: In this article, the specific heat of polycrystalline CVD-diamond samples is compared to their single-crystal counterparts in a differential scanning calorimeter between room temperature and 300°C.