Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Comparison of the Tribological Properties at 25 C of Seven Different Polyimide Films Bonded to 301 Stainless Steel
Author: Comparison of the Tribological Properties at 25 C of Seven Different Polyimide Films Bonded to 301 Stainless Steel
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781724263025
Category :
Languages : en
Pages : 30
Book Description
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
Scientific and Technical Aerospace Reports
Author: Polymer Wear and Its Control
Author: Lieng-Huang LeePublisher:
ISBN:
Category : Science
Languages : en
Pages : 440
Book Description
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.
Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 980
Book Description
Government Reports Announcements & Index
Author: Tribological Properties at 25 C of Seven Polyimide Films Bonded to 440 C High-Temperature Stainless Steel
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781723406164
Category :
Languages : en
Pages : 26
Book Description
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
Metals Abstracts
Author: Tribology
Author: Gear Materials, Properties, and Manufacture
Author: Joseph R. DavisPublisher: ASM International
ISBN: 1615030492
Category : Technology & Engineering
Languages : en
Pages : 349
Book Description
All of the critical technical aspects of gear materials technology are addressed in this new reference work. Gear Materials, Properties, and Manufacture is intended for gear metallurgists and materials specialists, manufacturing engineers, lubrication technologists, and analysts concerned with gear failures who seek a better understanding of gear performance and gear life. This volume complements other gear texts that emphasize the design, geometry, and theory of gears. The coverage begins with an overview of the various types of gears used, important gear terminology, applied stresses and strength requirements associated with gears, and lubrication and wear. This is followed by in-depth treatment of metallic (ferrous and nonferrous alloys) and plastic gear materials. Emphasis is on the properties of carburized steels, the material of choice for high-performance power transmission gearing.