Author: Ryan David EvansPublisher:
ISBN:
Category :
Languages : en
Pages : 162
Book Description
The Effects of Composition, Structure, and Chemical Bonding on the Mechanical Properties of Silicon-incorporated Amorphous Carbon Thin Films
Properties of Amorphous Carbon
Author: S. R. P. SilvaPublisher: IET
ISBN: 9780852969618
Category : Amorphous substances
Languages : en
Pages : 396
Book Description
World experts in amorphous carbon have been drawn together to produce this comprehensive commentary on the current state and future prospects of amorphous carbon, a highly functional material. Amorphous carbon has a wide range of properties that are primarily controlled by the different bond hybridisations possible in such materials. This allows for the growth of an extensive range of thin films that can be tailored for specific applications. Films can range from those with high transparency and which are hard and diamond-like, through to those which are opaque, soft and graphitic-like. Application areas including field emission cathodes, MEMs, electronic devices, medical and optical coatings are now close to market.
Amorphous Carbon: State Of The Art - Proceedings Of The 1st International Specialist Meeting On Amorphous Carbon (Smac '97)
Author: S R P SilvaPublisher: World Scientific
ISBN: 9814544973
Category :
Languages : en
Pages : 374
Book Description
Diamond-like carbon is amorphous carbon with a high degree of sp3 bonding, and is widely used for hard coatings and field emission cathodes. This book contains reviews by leading workers in the field, covering the topics of deposition methods, deposition mechanisms, atomic structure, surface atomic structure, electronic structure calculations, Raman, doping, luminescence, electron field emission, mechanical properties and tribology.
A Study of the Chemical, Mechanical, and Surface Properties of Thin Films of Hydrogenated Amorphous Carbon
Author: Gilroy John VandentopPublisher: Ann Arbor, Mich. : University Microfilms International
ISBN:
Category :
Languages : en
Pages : 328
Book Description
Ceramic Abstracts
Author: Optical and Mechanical Properties of Amorphous Hydrogenated Carbon Thin Films
Author: Calvin Bradford HopperPublisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Nanotribological Properties of Nanostructured Hard Carbon Thin Films
Author: David Scott GriersonPublisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
Tribological Response of Silicon Oxide-containing Hydrogenated Amorphous Carbon, Probed Across Lengthscales
Author: J. Brandon McClimonPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
This work examines the structure and properties of silicon-oxide containing hydrogenated amorphous carbon (a-C:H:Si:O) thin films, and how the structure and properties are responsible for the fundamental tribological response of the material. The films are studied through a range of spectroscopic techniques, focused on the surface-sensitive X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopies. The tribological response is studied at several lengthscales: using macroscale ball-on-flat tribometry, at the nanoscale with sharp diamond-like carbon-coated AFM probes, and at the microscale with steel colloids affixed to AFM cantilevers. The spectroscopic study reveals that the films contain a high fraction of SiOx which leads to a structure rich in sp3 carbon-carbon bonding that affords strong protection against oxidative attack at the elevated temperatures in aerobic environments, which is important for demanding applications. At the macroscale, low friction coefficients are achieved upon the formation of an inherently lubricious, soft and polymeric tribofilm whose composition and structure depends heavily on the sliding environment, while the lubriciousness of the resulting tribofilm does not depend on the environment in which it was formed. Nanoscale experiments demonstrate that the shear strength of a sharp, single asperity contact sliding on a-C:H:Si:O is at least an order of magnitude higher than those estimated from macroscale sliding, raising questions about whether the surface passivation theory of DLC lubricity is sufficient to explain macroscale lubricity. Colloidal AFM experiments show, in situ, that low friction is achieved with the growth of the tribofilm via a combination of reduced adhesion and a precipitous drop in the shear strength, which offset a simultaneous increase in the real area of contact. The compilation of results suggests a model of lubrication which relies on both surface passivation of the counterfaces and the soft and viscoelastic properties of the tribofilm, which reduce the effect on friction of nanoasperity pinning.
Properties of Amorphous Silicon and Its Alloys
Author: Tim SearlePublisher: Institution of Electrical Engineers
ISBN:
Category : Science
Languages : en
Pages : 440
Book Description
Coverage: preparation and material quality; structural and vibrational properties; electronic structure; electronic transport recombination of excess carriers; Schottky junctions; multilayers; optical constants; mechanical and thermal properties; TFTs; solar cells; photodetectors; large area displays; LEDs; xerographic applications.
Tetrahedrally Bonded Amorphous Carbon Films I
Author: Bernd SchultrichPublisher: Springer
ISBN: 3662559277
Category : Technology & Engineering
Languages : en
Pages : 769
Book Description
This book presents the status quo of the structure, preparation, properties and applications of tetrahedrally bonded amorphous carbon (ta-C) films and compares them with related film systems. Tetrahedrally bonded amorphous carbon films (ta-C) combine some of the outstanding properties of diamond with the versatility of amorphous materials. The book compares experimental results with the predictions of theoretical analyses, condensing them to practicable rules. It is strictly application oriented, emphasizing the exceptional potential of ta-C for tribological coatings of tools and components.