Excimer Laser Surface Processing For Tribological Applications In Metals And Ceramics PDF Download
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| Author | : |
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| Total Pages | : 22 |
| Release | : 1991 |
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Download Excimer Laser Surface Processing for Tribological Applications in Metals and Ceramics Book in PDF, ePub and Kindle
The use of pulsed excimer lasers, operating at UV wavelengths, for surface modification has many potential applications in the tribology of metals and ceramics. Alterations of surface chemistry and microstructure are possible on standard engineering materials. We have demonstrated improved tribological performance in stainless steel by the formation of a unique oxide and by Ti mixing and in SiC by Ti mixing. Specifically, we have observed reduced friction in dry sliding conditions and a change in the wear process resulting in greatly reduced surface damage. We have also demonstrated the effectiveness of excimer laser mixing in other systems with potential tribological applications. 22 refs., 7 figs.
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| Total Pages | : 13 |
| Release | : 1992 |
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Download Excimer Laser Surface Modification Book in PDF, ePub and Kindle
Surface modification can improve materials for structural, tribological, and corrosion applications. Excimer laser light has been shown to provide a rapid means of modifying surfaces through heat treating, surface zone refining, and mixing. Laser pulses at modest power levels can easily melt the surfaces of many materials. Mixing within the molten layer or with the gas ambient may occur, if thermodynamically allowed, followed by rapid solidification. The high temperatures allow the system to overcome kinetic barriers found in some ion mixing experiments. Alternatively, surface zone refinement may result from repeated melting-solidification cycles. Ultraviolet laser light couples energy efficiently to the surface of metallic and ceramic materials. The nature of the modification that follows depends on the properties of the surface and substrate materials. Alloying from both gas and predeposited layer sources has been observed in metals, semiconductors, and ceramics as has surface enrichment of Cr by zone refinement of stainless steel. Rapid solidification after melting often results in the formation of nonequilibrium phases, including amorphous materials. Improved surface properties, including tribology and corrosion resistance, are observed in these materials.
| Author | : Jeyaprakash Natarajan |
| Publisher | : Bentham Science Publishers |
| Total Pages | : 245 |
| Release | : 2021-11-22 |
| Genre | : Technology & Engineering |
| ISBN | : 9815036319 |
Download Laser Surface Treatments for Tribological Applications Book in PDF, ePub and Kindle
This reference presents comprehensive information about laser surface treatments for tribological applications. Chapters of the book highlight the importance of laser technology in modifying materials to optimize the effects of friction and lubrication, by explaining a range of surface modification methods used in industries. These methods include hardening, melting, alloying, cladding and texturing. The knowledge in the book is intended to give an in-depth understanding about the role of laser technology in tribology and the manufacture of industrial materials and surfaces for special applications. Key Features: - 10 chapters on topics relevant to tribology and industrial applications of laser material processing - Comprehensively covers laser surface modification of metals and alloys - Explains a wide range of surface modification methods (hardening, melting, alloying, cladding and texturing) - Covers material and tribological characterization of surfaces - Presents information in a simple structured layout for easy reading, with introductory notes for learners - Provides references for further reading This book is an ideal reference for students and learners in courses related to engineering, manufacturing and materials science. Researchers, industrial professionals and general readers interested in laser assisted machining processes and surface modification techniques will also find the book to be an informative reference on the subject.
| Author | : Jörn Bonse |
| Publisher | : MDPI |
| Total Pages | : 190 |
| Release | : 2020-11-25 |
| Genre | : Technology & Engineering |
| ISBN | : 303943523X |
Download Laser-Induced Periodic Surface Nano- and Microstructures for Tribological Applications Book in PDF, ePub and Kindle
This book is the printed edition of the Special Issue published in Materials. The book provides an overview of current international research activities in the field of friction and wear management through the laser processing of periodic surface micro- and nanostructures for technical and medical applications. Contributions of renowned scientists from academia and industry provide a bridge between the fields of tribology and laser material processing in order to foster current knowledge and present new ideas for future applications and new technologies.
| Author | : Jianhua Yao |
| Publisher | : Springer Nature |
| Total Pages | : 150 |
| Release | : 2022-02-27 |
| Genre | : Technology & Engineering |
| ISBN | : 9811689229 |
Download Laser Applications in Surface Modification Book in PDF, ePub and Kindle
This book introduces the applications of laser in surface modification, such as laser cladding of Stellite alloys and metal-ceramic composites. Besides, nanomaterials including carbon nanotubes and Al2O3 nanoparticles are brought into the laser processing, to form high-temperature resistance, chemical stability, and wear- and oxidation-resistant composite coatings. The readers will get more knowledge about the basic principle and application of laser cladding and laser surface hardening technologies, and gain a deep insight into the process and characteristics of the nanomaterial-assisted laser surface enhancement. It provides references for the researchers, engineers, and students in the fields of mechanical engineering, laser processing, and material engineering.
| Author | : Jonathan R. Lawrence |
| Publisher | : Elsevier |
| Total Pages | : 719 |
| Release | : 2014-10-02 |
| Genre | : Technology & Engineering |
| ISBN | : 1782420797 |
Download Laser Surface Engineering Book in PDF, ePub and Kindle
Lasers can alter the surface composition and properties of materials in a highly controllable way, which makes them efficient and cost-effective tools for surface engineering. This book provides an overview of the different techniques, the laser-material interactions and the advantages and disadvantages for different applications. Part one looks at laser heat treatment, part two covers laser additive manufacturing such as laser-enhanced electroplating, and part three discusses laser micromachining, structuring and surface modification. Chemical and biological applications of laser surface engineering are explored in part four, including ways to improve the surface corrosion properties of metals. Provides an overview of thermal surface treatments using lasers, including the treatment of steels, light metal alloys, polycrystalline silicon and technical ceramics Addresses the development of new metallic materials, innovations in laser cladding and direct metal deposition, and the fabrication of tuneable micro- and nano-scale surface structures Chapters also cover laser structuring, surface modification, and the chemical and biological applications of laser surface engineering
| Author | : Jeyaprakash Natarajan |
| Publisher | : Bentham Science Publishers |
| Total Pages | : 250 |
| Release | : 2021-11-22 |
| Genre | : |
| ISBN | : 9789815036329 |
Download Laser Surface Treatments for Tribological Applications Book in PDF, ePub and Kindle
This reference presents comprehensive information about laser surface treatments for tribological applications. Chapters of the book highlight the importance of laser technology in modifying materials to optimize the effects of friction and lubrication, by explaining a range of surface modification methods used in industries. These methods include hardening, melting, alloying, cladding and texturing. The knowledge in the book is intended to give an in-depth understanding about the role of laser technology in tribology and the manufacture of industrial materials and surfaces for special applications. Key Features: - 10 chapters on topics relevant to tribology and industrial applications of laser material processing - Comprehensively covers laser surface modification of metals and alloys - Explains a wide range of surface modification methods (hardening, melting, alloying, cladding and texturing) - Covers material and tribological characterization of surfaces - Presents information in a simple structured layout for easy reading, with introductory notes for learners - Provides references for further reading This book is an ideal reference for students and learners in courses related to engineering, manufacturing and materials science. Researchers, industrial professionals and general readers interested in laser assisted machining processes and surface modification techniques will also find the book to be an informative reference on the subject. Audience: Students, researchers, professionals and general readers interested in industrial processes for laser modification of surface and tribology
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| Publisher | : |
| Total Pages | : 6 |
| Release | : 1995 |
| Genre | : |
| ISBN | : |
Download Excimer Laser Processing of Tool Steel Book in PDF, ePub and Kindle
Excimer lasers were used to modify the surface of AISI type A-7 tool steel, a high C, high V, high Cr material used in many cutting applications. Multiple pulses of laser radiation at 248 nm were used to alter the composition of the surface alloy. Hardness and modulus were not significantly affected by the treatment, but friction in dry sliding against an alumina pin was reduced. The reduction was small but persistent for multiply melted and resolidified surfaces. These surfaces showed a marked increase in the surface Cr concentration. Greater reductions in friction were obtained from a Ti rich surface layer formed by laser mixing an evaporated Ti layer into the material. The friction coefficient of the Ti alloyed surface deteriorated after approximately 1000 cycles, indicating wear=through of the modified surface. The observed properties will be discussed in terms of the excimer laser modification process and the microstructure and composition of the resulting surfaces.
| Author | : |
| Publisher | : |
| Total Pages | : 920 |
| Release | : 1991 |
| Genre | : Aeronautics |
| ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 1156 |
| Release | : 1985 |
| Genre | : Aeronautics |
| ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
