Download or read book Atomic Scale Friction Measurements Using Friction Force Microscopy Part 2 Application to Magnetic Media written by and published by . This book was released on 1993 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic Force/Friction Force Microscopes (AFM/FFM) were used to study tribological properties of metal-particle tapes with two roughnesses, Co-gamma Fe2O3 tapes (unwiped and wiped), and unlubricated and lubricated thin-film magnetic rigid disks (as-polished and standard textured). Nanoindentation studies showed that the hardness of the tapes through the magnetic coating is not uniform. These results are consistent with the fact that the tape surface is a composite and is not homogeneous. Nanoscratch experiments performed on magnetic tapes using silicon nitride tips revealed that deformation and displacement of tape surface material occurred after one pass under light loads (approx. 100 nN). A comparison between friction force profiles and the corresponding surface roughness profiles of all samples tested shows a poor correlation between localized values of friction and surface roughness. Detailed studies of friction and surface profiles demonstrate an excellent correlation between localized variation of the slope of the surface roughness along the sliding direction and the localized variation of friction. Atomic-scale friction in magnetic media and natural diamond appears to be due to adhesive and ratchet (roughness) mechanisms. Directionality in the local variation of atomic-scale friction data was observed as the samples were scanned in either direction, resulting from the scanning direction and the anisotropy in the surface topography. Atomic-scale coefficient of friction is generally found to be smaller than the macro coefficient of friction as there may be less ploughing contribution in atomic-scale measurements.
Download or read book Atomic Scale Friction Measurements Using Friction Force Microscopy Part II Application to Magnetic Media written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic Force/Friction Force Microscopes (AFM/FFM) were used to study tribological properties of metal-particle tapes with two roughnesses, Co gamma Fe2O3 tapes (unwiped and wiped), and unlubricated and lubricated thin-film magnetic rigid disks (as-polished and standard textured). Nanoindentation studies showed that the hardness of the tapes through the magnetic coating is not uniform. These results are consistent with the fact that the tape surface is a composite and is not homogeneous. Nanoscratch experiments performed on magnetic tapes using silicon nitride tips revealed that deformation and displacement of tape surface material occurred after one pass under light loads approx. 100 nN). A comparison between friction force profiles and the corresponding surface roughness profiles of all samples tested shows a poor correlation between localized values of friction and surface roughness.
Download or read book Atomic Scale Friction Measurements Using Friction Force Microscopy Part 1 General Principles and New Measurement Techniques written by and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction force measurements using modified atomic force microscopy, called here Friction Force Microscopy (FFM), are becoming increasingly important in the understanding of fundamental mechanisms of friction, wear, and lubrication, and to study interfacial phenomena in micro- and nanostructures used in magnetic storage systems and Microelectromechanical Systems (MEMS). FFMs can be used to study engineering surfaces in dry or wet conditions. A review of existing designs of FFMs and methods of friction force measurements is presented. In terms of friction force measurements, there are important issues related to the basic operation and calibration of these instruments which have not been fully studied. A new method of measuring friction fore using a commercial FFM and a calibration Procedure for conversion of measured data to normal and friction forces are presented. Microscale friction data of selected materials are presented and discussed in light of macrofriction measurements.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1993 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanotribology and Nanomechanics written by Bharat Bhushan and published by Springer Science & Business Media. This book was released on 2008-05-10 with total page 1530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume serves as a timely, practical introduction to the principles of nanotribology and nanomechanics and applications to magnetic storage systems and MEMS/NEMS. Assuming some familiarity with macrotribology/mechanics, the book comprises chapters by internationally recognized experts, who integrate knowledge of the field from the mechanics and materials-science perspectives. Graduate students, research workers, and practicing engineers will find the book of value.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forces in Scanning Probe Methods written by H.-J. Güntherodt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute, Schluchsee, Germany, March 7--18, 1994
Download or read book Tribology Issues and Opportunities in MEMS written by Bharat Bhushan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micro Electro Mechanical Systems (MEMS) is already about a billion dollars a year industry and is growing rapidly. So far major emphasis has been placed on the fabrication processes for various devices. There are serious issues related to tribology, mechanics, surfacechemistry and materials science in the operationand manufacturingof many MEMS devices and these issues are preventing an even faster commercialization. Very little is understood about tribology and mechanical properties on micro- to nanoscales of the materials used in the construction of MEMS devices. The MEMS community needs to be exposed to the state-of-the-artoftribology and vice versa. Fundamental understanding of friction/stiction, wear and the role of surface contamination and environmental debris in micro devices is required. There are significantadhesion, friction and wear issues in manufacturing and actual use, facing the MEMS industry. Very little is understood about the tribology of bulk silicon and polysilicon films used in the construction ofthese microdevices. These issues are based on surface phenomenaand cannotbe scaled down linearly and these become increasingly important with the small size of the devices. Continuum theory breaks down in the analyses, e. g. in fluid flow of micro-scale devices. Mechanical properties ofpolysilicon and other films are not well characterized. Roughness optimization can help in tribological improvements. Monolayers of lubricants and other materials need to be developed for ultra-low friction and near zero wear. Hard coatings and ion implantation techniques hold promise.
Download or read book Modern Tribology Handbook Two Volume Set written by Bharat Bhushan and published by CRC Press. This book was released on 2000-12-28 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent research has led to a deeper understanding of the nature and consequences of interactions between materials on an atomic scale. The results have resonated throughout the field of tribology. For example, new applications require detailed understanding of the tribological process on macro- and microscales and new knowledge guides the rational
Download or read book Springer Handbook of Nanotechnology written by Bharat Bhushan and published by Springer Science & Business Media. This book was released on 2004-01-19 with total page 1232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This major work has established itself as the definitive reference in the nanoscience and nanotechnology area in one volume. In presents nanostructures, micro/nanofabrication, and micro/nanodevices. Special emphasis is on scanning probe microscopy, nanotribology and nanomechanics, molecularly thick films, industrial applications and microdevice reliability, and on social aspects. Reflecting further developments, the new edition has grown from six to eight parts. The latest information is added to fields such as bionanotechnology, nanorobotics, and NEMS/MEMS reliability. This classic reference book is orchestrated by a highly experienced editor and written by a team of distinguished experts for those learning about the field of nanotechnology.
Download or read book Principles and Applications of Tribology written by Bharat Bhushan and published by John Wiley & Sons. This book was released on 2013-02-15 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully updated Second Edition provides the reader with the solid understanding of tribology which is essential to engineers involved in the design of, and ensuring the reliability of, machine parts and systems. It moves from basic theory to practice, examining tribology from the integrated viewpoint of mechanical engineering, mechanics, and materials science. It offers detailed coverage of the mechanisms of material wear, friction, and all of the major lubrication techniques - liquids, solids, and gases - and examines a wide range of both traditional and state-of-the-art applications. For this edition, the author has included updates on friction, wear and lubrication, as well as completely revised material including the latest breakthroughs in tribology at the nano- and micro- level and a revised introduction to nanotechnology. Also included is a new chapter on the emerging field of green tribology and biomimetics.
Download or read book Introduction to Tribology written by Bharat Bhushan and published by John Wiley & Sons. This book was released on 2013-02-14 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fully updated version of the popular Introduction to Tribology, the second edition of this leading tribology text introduces the major developments in the understanding and interpretation of friction, wear and lubrication. Considerations of friction and wear have been fully revised to include recent analysis and data work, and friction mechanisms have been reappraised in light of current developments. In this edition, the breakthroughs in tribology at the nano- and micro- level as well as recent developments in nanotechnology and magnetic storage technologies are introduced. A new chapter on the emerging field of green tribology and biomimetics is included. Introduces the topic of tribology from a mechanical engineering, mechanics and materials science points of view Newly updated chapter covers both the underlying theory and the current applications of tribology to industry Updated write-up on nanotribology and nanotechnology and introduction of a new chapter on green tribology and biomimetics
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Functional Nanostructures written by Sudipta Seal and published by Springer Science & Business Media. This book was released on 2010-06-02 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book about functional nanostructures. Nanocrystalline materials exhibit outstanding properties and represent a new class of structural materials having a wide range of applications. In particular, there is considerable interest in developing nanocrystalline materials to be used as functional materials in aerospace applications, automotive industry, wear applications, etc. Future progress in these high technological applications of nanocrystalline materials depends on development of new methods of their fabrication and understanding of the underlying nano-scale and interface effects causing their unique mechanical properties.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Experimental and Numerical Contributions to the Mechanics of Fluids and Solids written by Paul Mansour Naghdi and published by Springer Science & Business Media. This book was released on 1995-07-27 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: ZAMP special issue, Vol. 46 This is a comprehensive and up-to-date collection of papers on the mechanics of fluids and solids by leading researchers. It encompasses theoretical, experimental and numerical work on a variety of topics, including nonlinear elasticity, plastici- ty, dynamics, water waves, and turbulence. The collection is published in celebration of Professor Paul M. Naghdi's lifelong contributions to the field of mechanics. It will be of interest to graduate students and researchers in all branches of continuum mechanics.
Download or read book Advances in Information Storage Systems written by Bharat Bhushan and published by World Scientific. This book was released on 1995 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Advances in Information Storage Systems covers a wide range of interdisciplinary technical areas, related to magnetic or optical storage systems. The following nonexhaustive list is indicative of the scope of the topics: Friction, Adhesion, Wear and Lubrications, Coatings, Solid Mechanics, Air Flow, Contamination, Instrumentation, Dynamics, Shock and Vibration, Controls, Head and Suspension Design, Actuators, Spindle and Actuator Motors and Bearings, Structure of Thin Films, Corrosion, Long-Term Reliability, Materials and Processing, Manufacturing and Automation, Economics.This volume contains 30 articles covering various aspects of the information storage and processing industry. It is organized into three parts: Mechanics and Tribology of Magnetic Rigid Disk Drives; Dynamics and Controls of Magnetic Rigid Disk Drives; and Mechanics of Flexible Media Systems.
