Download or read book The Adsorption of Moisture on Carbon Films Used as Overcoats for Rigid Disk Thin Film Magnetic Recording Media written by Keith Goodson and published by . This book was released on 1992 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book Proceedings of Malaysian International Tribology Conference 2015 written by Mariyam Jameelah Binti Ghazali and published by Malaysian Tribology Society. This book was released on 2015-11-16 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ebook is a compilation of papers presented at the Malaysian International Tribology Conference 2015 (MITC2015) - Penang, Malaysia on 16 ~ 17 November 2015.
Download or read book Characterization of Diamond like Carbon Films and Their Application as Overcoats on Thin Film Media for Magnetic Recording written by Hsiao-chu Tsai and published by . This book was released on 1986 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deposition Characterization and Tribological Studies on Carbon Overcoats for Magnetic Storage Disks written by Tse-an Yeh and published by . This book was released on 1993 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wear Protection Properties of Carbon Overcoats on Thin Film Magnetic Media written by Becky Merrell May and published by . This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Abstracts International written by and published by . This book was released on 1993 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Amorphous Carbon Films for Magnetic Storage Technology written by Jun Xie and published by . This book was released on 2015 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing demands for high magnetic storage capacity have led to the increase of the recording area density, mainly by reducing the distance between the magnetic media on the hard disk and the magnetic transducer of the head. A factor that has greatly contributed to the profound decrease of the magnetic spacing is excessive thinning of the protective amorphous carbon (a-C) overcoat. However, the remarkable decrease in overcoat thickness raises a concern about its quality and protective capability. In general, a-C films with higher sp3 carbon atom hybridization demonstrate higher density and better tribomechanical and corrosion properties. The sp2 and sp3 contents strongly depend on the film-growth conditions and deposition method. One of the most common film deposition methods is radio-frequency (RF) sputtering. This method uses low-energy neutral carbon atoms or clusters of atoms as film precursors and has been the workhorse of storage technology for more than four decades. Typically, Ar+ ion bombardment of the growing film during film growth is used to tailor the overcoat structure and properties without affecting its chemical environment. The substrate bias voltage is a key deposition parameter because it directly affects the ion bombardment energy. In this dissertation, the effect of the substrate bias voltage on the growth and properties of ultrathin a-C films was examined and the identified film structure-property interdependencies were explained in the context of an analytical model, which takes into account the effects of irradiation damage and thermal spikes. Substrate biasing during film deposition may lead to some undesirable effects, such as the development of a high compressive residual stress, which can cause premature overcoat failure by delamination. Experimental studies of this dissertation show that alternating between biasing and non-biasing deposition conditions, multi-layer a-C films consisting of ultrathin hard (bias on) and soft (bias off) layers characterized by high sp3 fraction and greatly reduced compressive residual stress can be synthesized by RF sputtering. An additional advantage is that these multi-layer a-C films exhibit lower surface roughness and improved tribological properties. Different from deposition methods using neutral carbon atoms as film-forming precursors, such as RF sputtering and other physical vapor deposition methods, filtered cathodic vacuum arc (FCVA) uses energetic C+ ions as film precursors, which is advantageous for depositing ultrathin and very smooth a-C films with superior nanomechanical/tribological properties. The role of important FCVA process parameters, such as substrate bias voltage, which controls the C+ ion energy, in the film growth process were investigated, while considering various means of reducing the a-C film thickness without jeopardizing its structure and properties. The effect of the duty cycle of substrate pulse biasing (i.e., the ratio of the time of substrate biasing over a pulse to the pulse bias period) was examined in terms of film deposition rate, surface topography, and nanostructure. Cross-sectional high-resolution transmission electron microscopy (HRTEM) combined with the scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) studies revealed variations in through-thickness hybridization and density with duty cycle. a-C films with the highest sp3 content and smallest thickness were synthesized under FCVA deposition conditions of 75% and 65% duty cycle, respectively. EELS studies show that a-C films generally possess a multi-layered structure consisting of surface and interface layers of relatively low sp3 contents and intermediate bulk layer of much higher sp3 content, a result of the deposition mechanisms encountered during ion bombardment. When the a-C film thickness is reduced to only 2-3 nm, the effects of the ultrathin (1-2 nm) surface and interface layers become increasingly more pronounced, resulting in the decrease of the overall sp3 content and, in turn, depletion of the film's protective capability. To reduce the thickness of the interface layer, a thin (
Download or read book Journal of Tribology written by and published by . This book was released on 2000 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tribology of Carbon Films as Protective Overcoats for High Areal Density Disk Drive Applications written by Walton Fong and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Wide Band Recording Materials written by T. J. Moravec and published by . This book was released on 1985 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is the final report of a program to develop hard carbon (diamond-like) coatings as environmentally protective coatings for laser disc optical recording media. Two methods for producing the hard carbon films on the metallic thin film media were studied: plasma CVD by a hydrocarbon gas (PCVD), and direct Carbon Ion Beam Deposition (CIBD). Both methods tended to remove the sensitive media layer before the hard carbon layer could be formed. An additional oxide layer deposited on the metallic media solved this problem. This hard carbon/oxide/metallic media system was successful in resisting degradation due to moisture. Keywords include: Thin films; Coatings; Diamond-like-films; Tellurium; Optical recording media; Magneto-optic media; Terbium iron films; and Magnetic thin films.
Download or read book Thin Film Diamond written by A.H. Lettington and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work, written by leading international authorities, deals with nucleation growth and processing, characterization and electrical, thermal, optical and mechanical properties of thin film diamond. The final chapters are devoted to the broad range of applications of this material.
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by and published by . This book was released on 1998 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
