TY - JOUR
T1 - Improved wear resistance of functional diamond like carbon coated Ti–6Al–4V alloys in an edge loading conditions
AU - Choudhury, Dipankar
AU - Lackner, Jürgen M.
AU - Major, Lukasz
AU - Morita, Takehiro
AU - Sawae, Yoshinori
AU - Bin Mamat, Azuddin
AU - Stavness, Ian
AU - Roy, Chanchal K.
AU - Krupka, Ivan
N1 - Funding Information:
This work was supported by the Excellent Young Researcher project (CZ.1.07/2.3.00/30.0039) from Brno University of Technology, the project “CEITEC – Central European Institute of Technology” (CZ.1.05/1.1.00/02.0068) financed by European Regional Development Fund.
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/6/1
Y1 - 2016/6/1
N2 - This study investigates the durability of functional diamond-like carbon (DLC) coated titanium alloy (Ti–6Al–4V) under edge loading conditions for application in artificial hip joints. The multilayered (ML) functional DLC coatings consist of three key layers, each of these layers were designed for specific functions such as increasing fracture strength, adapting stress generation and enhancing wear resistance. A ‘ball-on-disk’ multi-directional wear tester was used in the durability test. Prior to the wear testing, surface hardness, modulus elasticity and Raman intensity were measured. The results revealed a significant wear reduction to the DLC coated Ti–6Al–4V disks compared to that of non-coated Ti–6Al–4V disks. Remarkably, the counterpart Silicon Nitride (Si3N4) balls also yielded lowered specific wear rate while rubbed against the coated disks. Hence, the pairing of a functional multilayered DLC and Si3N4 could be a potential candidate to orthopedics implants, which would perform a longer life-cycle against wear caused by edge loading.
AB - This study investigates the durability of functional diamond-like carbon (DLC) coated titanium alloy (Ti–6Al–4V) under edge loading conditions for application in artificial hip joints. The multilayered (ML) functional DLC coatings consist of three key layers, each of these layers were designed for specific functions such as increasing fracture strength, adapting stress generation and enhancing wear resistance. A ‘ball-on-disk’ multi-directional wear tester was used in the durability test. Prior to the wear testing, surface hardness, modulus elasticity and Raman intensity were measured. The results revealed a significant wear reduction to the DLC coated Ti–6Al–4V disks compared to that of non-coated Ti–6Al–4V disks. Remarkably, the counterpart Silicon Nitride (Si3N4) balls also yielded lowered specific wear rate while rubbed against the coated disks. Hence, the pairing of a functional multilayered DLC and Si3N4 could be a potential candidate to orthopedics implants, which would perform a longer life-cycle against wear caused by edge loading.
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U2 - 10.1016/j.jmbbm.2016.04.004
DO - 10.1016/j.jmbbm.2016.04.004
M3 - Article
C2 - 27085502
AN - SCOPUS:85008712402
SN - 1751-6161
VL - 59
SP - 586
EP - 595
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
ER -