FRETTING CORROSION STUDIES OF MATERIALS USED FOR ELEMENTS OF HIP JOINT ENDOPROSTHESES
Journal Title: Tribologia - Year 2018, Vol 281, Issue 5
Abstract
The operational durability of a hip endoprosthesis depends, among others, on the intensity of the damage processes of kinematic junction elements caused by fretting corrosion processes. In the article, the results of comparative studies on the fretting corrosion resistance of alloys commonly used for hip joints, i.e. Ti6Al4V, CoCrMo, stainless steel M30NW, and 316LVM, are presented. The research was carried out by means of a tribological pin-on-disc tester working in reciprocating motion, integrated with a potentiostat equipped with a triac electrode. The tribosystem was a pin pressed by a constant force to a reciprocating disc with a certain amplitude and frequency. The tests were carried out in a medium of aqueous bovine serum heated to 37°C. The conducted comparative tests of the above mentioned materials will allow selection of the best material combination in terms of tribological and fretting corrosion resistance. Under optimized conditions, the modified oils obtained a needed appropriate viscosity class.<br/><br/>
Authors and Affiliations
Agnieszka WIELOWIEJSKA-GIERTUGA, Tomasz WIŚNIEWSKI, Rafał RUBACH
AN ATTEMPT AT IDENTIFYING THE INFLUENCE OF TEST HEAD ASSEMBLY STIFFNESS ON THE RESULTS OF A TRIBOLOGICAL EXPERIMENT CONDUCTED UNDER MICRO-OSCILLATION CONDITIONS
The outcome of experimental research on a group of dry bearing materials carried out under small oscillation conditions and using a test rig designed and made at Gdansk University of Technology inspired the decision to f...
Zmienność wyników w zagadnieniach powtarzalności i odtwarzalności wyznaczenia charakterystyk tribologicznych
Przedstawione w artykule rozważania dotyczą zagadnienia zmienności wyników badań tribologicznych prowadzonych w warunkach laboratoryjnych przy określonych parametrach procesu tarcia. Zmienność wyników badań analizowano w...
Charakterystyki tribologiczne warstwy Al2O3 modyfikowanej grafitem w skojarzeniu ślizgowym z kompozytami polimerowymi
W pracy przedstawiono właściwości tribologiczne warstw Al2O3 modyfikowanych grafitem. Ceramiczno-grafitowe warstwy powierzchniowe zostały wytworzone na stopie aluminium EN-AW 5251 technologią „duplex” oraz technologią be...
SHAPES OF NANO-GROOVES AND RIDGE SHAPES ON MICRO-BEARING SURFACES
In micro-bearings, where journal diameter has values up to 1 millimetre and the height of the micro-bearing gap has the largest value 1 micrometer, the intelligent features are attained by the groove and ridges on the sl...
CUTTING FLUIDS ON THE BASE OF PURIFIED GLYCEROL FRACTION
CUTTING FLUIDS ON THE BASE OF PURIFIED GLYCEROL FRACTION