منابع مشابه
Carbon-carbon composite bearing materials in hip arthroplasty: analysis of wear and biological response to wear debris.
Ultra-high molecular weight polyethylene wear particles have been implicated as the major cause of osteolysis, implant loosening and late aseptic failure in total hip arthroplasties in vivo. This study initially screened 22 carbon-carbon composite materials as alternatives for UHMWPE in joint bearings. New bearing materials should satisfy certain criteria--they should have good wear properties ...
متن کاملWear and Wear Debris Generated from Ceramic-on-Carbon Fibre Reinforced PEEK Hip Replacements
INTRODUCTION Concerns regarding UHMWPE wear particle induced osteolysis [1] have led to investigations of alternative bearing materials. Carbon-fibre reinforced poly-ether-ether-ketone (CFR-PEEK) has been shown in animal studies to have a similar biological activity to UHMWPE [2], whilst hip and knee configurations incorporating this polymer display reduced wear rates when compared with convent...
متن کاملWear, Plasticity, and Rehybridization in Tetrahedral Amorphous Carbon
Wear in self-mated tetrahedral amorphous carbon (ta-C) films is studied by molecular dynamics and nearedge X-ray absorption fine structure spectroscopy. Both theory and experiment demonstrate the formation of a soft amorphous carbon (a-C) layer with increased sp content, which grows faster than an a-C tribolayer found on selfmated diamond sliding under similar conditions. The faster sp ! sp tra...
متن کاملComparing hardness and wear data for tetrahedral amorphous carbon and hydrogenated amorphous carbon thin films
We compared nanoindentation and nanoscratch testing of 10 and 50 nm thick tetrahedral amorphous carbon (ta-C) and hydrogenated amorphous carbon (a-C:H). Raman spectroscopy shows the expected spectral features for the two carbon forms, however, luminescence from the ceramic substrate can alter the spectra. We find that hard ta-C films can blunt the diamond tip and hence use a tip area function r...
متن کاملReciprocating Wear Behaviour of Two Dimensionally Reinforced Carbon-Phenolic and Carbon-Epoxy Composites
A comparative study has been carried out on performance of two-dimensionally reinforced carbon/ phenolic (C/P) and carbon/epoxy (C/E) composites, subjected to low amplitude reciprocating wear at different temperatures. The C/P composite has shown greater wear rate than the C/E composite, with the difference being modest at room temperature, and larger at 250 °C. The values of coefficient of fri...
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ژورنال
عنوان ژورنال: Journal of the American Institute of Electrical Engineers
سال: 1920
ISSN: 0360-6449
DOI: 10.1109/joaiee.1920.6592739