Tribology of Ceramics and Composites provides a rigorous study of how materials science can be used to understand, explore, and harness tribological interactions. Including introductory chapters on the fundamentals, processing, and applications of tribology, the book in designed primarly to provide students and practicing scientists with a comprehensive understanding of the fundamentals of the nature and properties of ceramic and composite materials as well as the friction and wear of sturctural ceramics in unlubricated, water-lubricated, and cryogenic enviroments. This book also includes thematic sections on tribological properties of bioceramics, biocomposites, and nanoceramics, as well as lightweight composites.
COBISS.SI-ID: 11385371
Surfaces and surface roughness are discussed from the mechanical or engineering perspective. The notion of surface roughness and how it is measured is explained as well as how the acquired data is processed in order to characterize the surfaces with appropriate surface parameters. Furthermore, the correlations of surface roughness to contact area and plasticity index are discussed, in respect that they are both important for the behaviour of material pair in contact. Some basic concepts behind friction and causes for this phenomenon are also presented and an explanation is given on how it depends on the interaction between the surfaces and their properties and therefore on how it correlates to surface roughness.
COBISS.SI-ID: 12182299
Polymer gears have been successfully used for different gear drives for more than 50 years. In the last decade their popularity is increasing as they can transfer ever bigger power, even under severe running conditions. In order to achieve this goal, the high-quality polymer materials are needed. The development of polymer materials is continuous as companies tend to develop new and more advanced types of polymers. The properties of basic polymers can be enhanced with different fillers such as carbon and glass fibres, solid lubricants, nanoparticles, etc. In our research the effect of material combination (plastic/plastic and plastic/steel) on wear and friction was studied using a pin-on-disc apparatus. Polyamide, polyacetal and stainless steel have been tested under different sliding conditions. The results indicate that sliding distances to steady-state coefficient of friction are significantly longer for plastic/plastic combinations compared to plastic/steel combinations. In addition the surface temperatures for plastic/plastic combinations were found to be higher than for polymers in contact with steel.
COBISS.SI-ID: 12105243