Influence of amorphous carbon layers on tribological properties of polyetheretherketone composite in contactwith nitrided layer produced on Ti6Al4V titanium alloy
PBN-AR
Instytucja
Wydział Inżynierii Materiałowej (Politechnika Warszawska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Diamond and Related Materials (30pkt w roku publikacji)
ISSN
0925-9635
EISSN
Wydawca
DOI
URL
Rok publikacji
2017
Numer zeszytu
1
Strony od-do
123-130
Numer tomu
75
Identyfikator DOI
Liczba arkuszy
0.5
Autorzy
Pozostali autorzy
+ 1
Słowa kluczowe
en
Polyetheretherketone
amorphous carbon layers a-C:N:H
Nitrided Ti6Al4V
Microstructure
Tirbological properties
Konferencja
Indeksowana w Scopus
nie
Indeksowana w Web of Science Core Collection
nie
Liczba cytowań z Web of Science Core Collection
Nazwa konferencji (skrócona)
Nazwa konferencji
27th International Conference on Diamond and Carbon Materials – DCM 2016
Początek konferencji
2016-09-04
Koniec konferencji
2016-09-08
Lokalizacja konferencji
Montpellier
Kraj konferencji
FR
Lista innych baz czasopism i abstraktów w których była indeksowana
Streszczenia
Język
en
Treść
The key issue in bone implants biomechanics is – besides using biocompatible materials - the optimization of tribological properties of friction pairs occurring in joint implants e.g. knee and hip endoprothesis. Increasingly important role in these systems, alongside ceramics-on-ceramics and metal-on-metal, have metal-on-polymer friction pairs. Commonly used in orthopedics ultra high molecular weight polyethylene (UHMWPE) does not meet the requirements of modern bone implants, mainly because of its harmful wear products which can cause inflammation and osteolysis of surrounding tissues after several years of using the endoprosthesis. Therefore, other polymer materials have been developed to replace UHMWPE, as well as several surface engineering methods are used for enhancing biocompatibility and tribological properties of applied materials. One of the materials to replace UHMWPE is increasingly used in medicine polyetheretherketone (PEEK) – a polymer material with a high biological indifference and mechanical properties. The article presents characteristics of TiN+Ti2N+αTi(N) nitrided layer produced on Ti6Al4V titanium alloy using glow discharge assisted nitriding process at the plasma potential, also known as the active screen plasma nitriding process and hydrogenated amorphous carbon doped with nitrogen layer a-C:N:H produced via RFCVD process on PEEK-based composite consisting of 10% graphite, 10% carbon fibers and 10% PTFE. Tribological properties of a-C:N:H – TiN+Ti2N+αTi(N) friction pair using “ball-on-disc” and “block-on-roll” tests were examined in correlation with microstructure (TEM, SEM, Raman spectroscopy) and surface morphology and topography (SEM, AFM, optical profilometer). The goal of this work is to present a new possibility of material solution for a ‘head-acetabulum’ friction pair in hip joint endoprosthesis using PEEK (PEEK T) as a replacement for commonly used UHMWPE and nitrided layer produced on Ti6Al4V titanium alloy using active screen plasma nitriding process. Amorphous carbon layer, 200 nm thick, produced on PEEK composite significantly improved tribological properties of PEEK composite – TiN (nanocrystalline)+Ti2N+αTi(N) layer friction pair, decreasing the friction coefficient by 2 times and minimizing wear of both used materials in the point contact (“ball-on-disc” method) and in surface contact (“block-on-roll” method).
Inne
System-identifier
WUTfd8ccaf51b6b4fb38801ffca9be5e54c
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