Download or read book Comparison of the Tribological Properties at 25 C of Seven Different Polyimide Films Bonded to 301 Stainless Steel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-26 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pin-on-disk type of friction and wear apparatus was used to study the tribological properties of seven different polyimide films bonded to AISI 301 stainless steel disks at 25 C. It was found that the substrate material was extremely influential in determining the lubricating ability of the polyimide films. All seven films spalled in less than 1000 cycles of sliding. This was believed to be caused by poor adherence to the 301 stainless steel or the inability of the films to withstand the high localized tensile stresses imparted by the deformation of the soft substrate under sliding conditions. The friction coefficients obtained for six of the polyimides varied between 0.21 to 0.32 while one varied between 0.32 to 0.39. Fusaro, R. L. Glenn Research Center NASA-TM-81413, E-328

Download or read book Comparison of the Tribological Properties at 25 C of Seven Different Polyimide Films Bonded to 301 Stainless Steel written by and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties at 25 C of Seven Polyimide Films Bonded to 440 C High Temperature Stainless Steel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-21 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tribological properties of seven polyimide films applied to 440 C high temperature stainless steel substrates were studied at 25 C with a pin-on-disk type of friction and were apparatus. The polyimides fell into two groups according to friction and wear properties. Group I polyimides had slightly lower friction but much higher wear than group II polyimides. The wear mechanism was predominately adhesion, but the wear particles were larger for group I polyimides. For most of the polyimides the transfer films consisted of clumps of compacted wear particles. One polyimide composition produced a very thin transfer film that sheared plastically in the contact area. Fusaro, R. L. Glenn Research Center NASA-TP-1944, E-758

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1980 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties at 25 C of Seven Polyimide Films Bonded to 440 C High temperature Stainless Steel written by and published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties at 25 Deg C of Seven Polyimide Films Bonded to 440C High Temperature Stainless Steel written by and published by . This book was released on 1982 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tribological properties of seven polyimide films applied to 440C high-temperature stainless steel substrates were studied at 25 deg C (room temperature) on a pin-on-disk friction and wear apparatus. The polyimides fell into two groups according to friction and wear properties. The polyimides in group I had slightly lower friction but much higher wear than those in group II. The wear rate for group II polyimides was about an order of magnitude lower than that for group I polyimides. jg p4.

Download or read book Tribological Properties at 250 C of Seven Polyimide Films Bonded to 440C High temperature Stainless Steel written by Robert L. Fusaro and published by . This book was released on 1982 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties at 25 C of Seven Polyimide Films Bonded to 440C High temperature Stainless Steel written by Robert L. Fusaro and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties at 250C of Seven Polyimide Films Bonded of 440C High temperature Stainless Steel written by Robert L. Fusaro and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Wear and Its Control written by Lieng-Huang Lee and published by . This book was released on 1985 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Looks at the development of high-strength polymers for use in human implants, all-composite airplanes, items now made of metal, and more. Covers the chemical characteristics and behavior mechanisms of these polymers. Contains reviews and research results on polymer wear and the various approaches to its control. Also describes biological behavior, wear of biomaterials and composites, characterization and measurements of wear, and degradation and wear of polymeric films and filaments.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1980 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1980 with total page 1530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tribological Properties and Thermal Stability of Various Types of Polyimide Films written by Robert L. Fusaro and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lubrication and Wear Mechanisms of Polyimide bonded Graphite Fluoride Films Subjected to Low Contact Stress written by Robert L. Fusaro and published by . This book was released on 1980 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of the Weight Loss and Adherence of Nine Different Polyimide Films Thermally Aged at 315 C and 350 C in Air high Temperature Lubricants written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-13 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal exposure experiments at 315 and 350 C were performed in air on nine different types of polyimides applied to thin 304 stainless steel foils. The tests were conducted to determine which polyimide was the most thermally stable and adherent when subjected to long exposure times at elevated temperatures. One polyimide designated PIC-7 was found to be more thermally stable than the others; however, it did not possess the adherent properties of PIC-2 and PIC-5. It was concluded that as far as thermal stability and adherence are concerned, five of the polyimides are more suitable for high temperature applications than the other four. Fusaro, R. L. Glenn Research Center NASA-TM-81381, E-286 ...

Download or read book Comparison of the Weight Loss and Adherence of Nine Different Polyimide Films Thermally Aged at 315 C and 350 C in Air written by and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thin Films in Tribology written by G. Dalmaz and published by Elsevier. This book was released on 1993-09-06 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tribological properties of relatively moving surfaces are greatly influenced by thin surface films which are of considerable importance in the design of machine components. From Victorian days when working lubricant films were calculated in tens of micrometres, to today when molecular dynamics simulations and even experiments are beginning to look at nanometre, single molecule thick films, the study of surfaces which is the tribologists' challenge has moved to finer and finer scales.The 66 papers in this volume provide reviews across the tribological field with thin films as their theme, giving a comprehensive and concise description on topics ranging from coatings and surface modification to bio-tribology. The articles provide the reader with an outline of their most effective application and potential uses in new technologies. The volume will be of interest not only to research workers and design engineers in the fields of new machine developments and lubrication, but also to engineers and students specialising in tribology.