A novel functional layered diamond like carbon coating for orthopedics applications

Dipankar Choudhury, Takehiro Morita, Yoshinori Sawae, Jürgen M. Lackner, Mark Towler, Ivan Krupka

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

Functional Layered "Diamond like Carbon (DLC)" coated interfaces for orthopedic load bearing applications were fabricated and assessed. They consisted of three layers, each designed for specific functions. The fabrication process was performed using magnetron sputtering at low temperatures on steel substrates. Structural investigations showed the layers possessed very fine grained, columnar microstructures with a very low density of inter columnar micro-cracks. The mechanical and surface properties such as micro hardness, wettability, roughness, modulus of elasticity, water contact angle and absorbed protein layer (γ-globulin) varied among the DLCs. The biotribological tests, conducted under simulated hip joint conditions (friction, wear, Raman intensity ratio and polyethylene wear debris) were correlated with their surface and material properties. The DLC (sample no #ML1), which were built with 0.6 μm thick tribological layer (a-C:H:Cr-a-C:16 bilayers, ratio: 1:1) and 0.15 μm thin (a-C:H) top layer was found to yield superior tribological performances at "DLC on Polyethylene" sliding pairs. On the other hand, DLC (sample no#GL3), which consist of 0.6 μm thick tribological layer (gradient layer a-C:H > a-C:N) and 0.15 μm thin (a-C:H) top layer was found to yield finest tribological performances at "DLC on DLC" sliding pairs.

元の言語英語
ページ(範囲)56-69
ページ数14
ジャーナルDiamond and Related Materials
61
DOI
出版物ステータス出版済み - 1 1 2016

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Diamond
Orthopedics
Diamonds
Carbon
Coatings
Polyethylene
Surface properties
Polyethylenes
Bearings (structural)
Wear of materials
Steel
Globulins
Debris
Magnetron sputtering
Microhardness
Contact angle
Wetting
Materials properties
Elastic moduli
Surface roughness

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering

これを引用

A novel functional layered diamond like carbon coating for orthopedics applications. / Choudhury, Dipankar; Morita, Takehiro; Sawae, Yoshinori; Lackner, Jürgen M.; Towler, Mark; Krupka, Ivan.

:: Diamond and Related Materials, 巻 61, 01.01.2016, p. 56-69.

研究成果: ジャーナルへの寄稿記事

Choudhury, Dipankar ; Morita, Takehiro ; Sawae, Yoshinori ; Lackner, Jürgen M. ; Towler, Mark ; Krupka, Ivan. / A novel functional layered diamond like carbon coating for orthopedics applications. :: Diamond and Related Materials. 2016 ; 巻 61. pp. 56-69.
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