THE INFLUENCE OF REDUCING TEMPERATURE ON CHANGING YOUNG’S MODULUS AND THE COEFFICIENT OF FRICTION OF SELECTED SLIDING POLYMERS
Journal Title: Tribologia - Year 2018, Vol 279, Issue 3
Abstract
For the polymeric materials, changing of the temperature causes changes in mechanical and tribological properties of sliding pairs. The goal of the present study was to determine the change in Young's modulus and kinetic friction coefficient depending of the temperature. Three thermoplastic polymers, PA6, PET and PEEK, were tested. These materials cooperated in sliding motion with a C45 construction steel disc. As part of the experiment, the Young's modulus tests (by 3-point bending method) and kinetic friction coefficient studies (using pin-on-disc stand) were carried out. The temperature range of mechanical and tribological tests was determined at T = –50°C±20°C. Comparing the results of mechanical and tribological properties, there is a tendency to decrease the coefficient of friction as the Young's modulus increases while reducing the working temperature.<br/><br/>
Authors and Affiliations
Anita PTAK, Piotr KOWALEWSKI
THE EVALUATION METHODS OF SURFACE LAYER ENERGY CONDITIONS
The issue of the evaluation of surface layer energy conditions was presented in this article. A large majority of presented methods do not find application in modern tribology but mechanisms of their activity predispose...
CUTTING FLUIDS ON THE BASE OF PURIFIED GLYCEROL FRACTION
CUTTING FLUIDS ON THE BASE OF PURIFIED GLYCEROL FRACTION
BADANIA TRIBOLOGICZNE I PRÓBY UDAROWE POLIMERÓW AKRYLOWYCH DLA PROTETYKI STOMATOLOGICZNEJ
Funkcjonalność kliniczna konstrukcji protezy polega na stworzeniu najdogodniejszych warunków bezurazowego oddziaływania sił żucia na podłoże oraz dostosowania jej do indywidualnych wymuszeń biomechanicznych US. Przy prze...
THE WEAR PERFORMANCE OF DIAMOND-LIKE CARBON COATINGS IN RELATION TO COATING COMPOSITION AND FRICTION PAIR
This study has been carried out to examine diamond like carbon coatings; a-C:H:W single-layer and TiN/a-C:H:W multilayer prepared on CoCrMo alloy by the PVD and PACVD technique. Information on the composition of amorphou...
ABRASIVE WEAR MECHANISMS OF THIN PVD COATINGS AFTER BALL-CRATERING TESTS
The article presents the wear mechanisms of thin PVD coatings during abrasive wear the ball-cratering method. Abrasive wear tests were performed on chosen antiwear PVD coatings with the optimum work parameters of frictio...