A tribological study of the petaloid surface texturing for Co–Cr–Mo alloy artificial joints

Zhang, Hui; Qin, Liguo; Hua, Meng; Dong, Guangneng; Chin, Kwai‐Sang

doi:10.1016/j.apsusc.2015.01.215

Cited by 50 publications

(22 citation statements)

References 27 publications

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“…As shown in Figure 15e,f, the intensity of the D and G peaks follows the order: 3 < DS < 1 < 2, and the I D /I G follows the order: DS < 1 < 3 < 2. As displayed in Figure 15f, the ratio of D and G peaks on the worn surface is considerably higher than those of the worn dimple, thereby indicated that the micro-dimple could protect the DS particles and the DS additives on the textured surfaces undergo more significant graphitization than that of original DS during friction, probably attributed to that the large amount of graphitized wear debris entrapped in the micro-dimples according to Ferrari and Robertson's three-stage model for the Raman spectra of disordered and amorphous carbon [28]. When the ball is sliding through the dimples, the additives in the dimples would be rolling or sliding in the dimples to decrease friction [29,30].…”

Section: Analysis Of the Worn Surfacesmentioning

confidence: 99%

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

2018

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Tribological properties of nano diesel soot (DS) as an additive were investigated. Textures in linear radiating arrays were prepared on the surface of a spring-steel plate by laser radiation. The texture densities were 19.6%, 22.1%, and 44.2%, and the depth was 30 µm. The results indicated that the textured surface was interacted with additive favorably to improve its tribological performance. Friction coefficients and wear rates of textured surfaces with additive in oil were generally much lower compared to the original surface without additive. The higher area density of the textured surface with the additive in oil had the lowest friction coefficient, as low as 0.12, and also the minimum wear rate, as low as 1 × 10 3 µm/N·m in 100 • C, to be achievable. Such results can be attributed to the formation of the tribo-film and the storage function of the micro-dimple.

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Section: Analysis Of the Worn Surfacesmentioning

confidence: 99%

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

2018

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“…Although the artificial bone has a relatively low friction coefficient, severe wear usually occurs on the bearing surface. Experiments have been carried out in order to reduce the artificial hip joint friction by the micro dimpled structures into ultra-smooth femoral heads [118,119]. Chyr et al fabricated the dimple structures on the cobalt-chromium (Co-Cr) femoral head with the area density from 5% to 20% to investigate the friction reduction of metal-on-polyethylene (MOP) artificial hip joint.…”

Section: Literature Review Of Wear Resistant Property In Implantsmentioning

confidence: 99%

Laser Interference Lithography for Applications in Biomedicine

2017

IFMBE Proceedings

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Surface modification of implant biomaterials has become the commonly used methods for the long life artificial implants and successful orthopaedic implantation. Numbers of technologies have been developed to improve the performances of artificial implants in biological systems. However, most of the technologies are associated with complex, time-consuming and not fully controllable processes, resulting in undesirable micro and nano structures. DLIL provides an effective method for nanomanufacturing of well-designed structures with controllability. The research reported in this thesis tackles the issues with particular focus on DLIL for the fabrication of well-designed micro and nano structures with functionalities including superhydrophobic, wear resistant property and biocompatibility on various biomaterials. Four-beam DLIL was developed to design and fabricate the micro and nano convex structures on silicon surfaces. Parameters such as incident angle, azimuthal angle and polarisation direction were adjusted to simulate micro patterns in period of 5.5 μm for structure design, and laser fluence and exposure duration were set to fabricate micro III PUBLISHED WORK AS PARTS OF THIS THESIS  Research described in Section 4.2 (Simulations and experiments of fabrication of superhydrophobic surfaces on silicon) and Section 4.3 (Results and discussions)

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“…In recent years, Co-Cr-Mo alloys have been widely used for medical implant applications including the replacements of human joints (hip joint and knee) and dental treatments. (1)(2)(3) In particular, as dental applications, Co-Cr-Mo alloys are practically applied in the base plates in complete dentures, bridgeworks, and dental implants. This is because of the many advantages of Co-Cr-Mo alloys, including good mechanical properties, excellent wear resistance, superior corrosion resistance, and extremely high biocompatibility with the human body.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sintering Temperature on Structural, Morphological, and Mechanical Properties of Co-Cr-Mo Alloys Coated with ZrO2 Ceramic Films

Huang¹,

Chang²,

Ou³

et al. 2021

Sensors and Materials

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In this study, ZrO 2 thin films were coated on Co-Cr-Mo alloys by screen printing and spraying, which was followed by sintering at a high temperature of 750, 900, or 1100 °C to enhance the characteristics of the coated alloys. Through X-ray diffraction (XRD) measurements, scanning electron microscopy (SEM), surface roughness measurements, and microscale hardness testing, the structural, morphological, and mechanical characteristics of the Co-Cr-Mo alloys coated with ZrO 2 films were investigated in detail. The experimental results revealed that both the microhardness and smoothness of the ZrO 2 ceramic films prepared by screen printing and spraying methods clearly improved with increasing sintering temperature. It was also found that the increase in the sintering temperature contributes to the increased thickness and density of the films, leading to enhanced mechanical properties of the Co-Cr-Mo alloys. After sintering at 1100 °C, the ZrO 2 film prepared by spraying had the smoothest surface (surface roughness: 0.70 μm) and the highest hardness (767 HV 0.5 ). The results confirm that ZrO 2 coatings on Co-Cr-Mo alloys have high potential for medical implant applications. In addition, the sintering process is helpful for improving the mechanical properties. The ZrO 2 materials are used in many sensor applications, and sensing applications can be realized using ZrO 2 /Co-Cr-Mo materials. In the future, we will study the sensing performance of ZrO 2 sensors fabricated on Co-Cr-Mo alloys as well as implants made of the coated alloys.

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A tribological study of the petaloid surface texturing for Co–Cr–Mo alloy artificial joints

Cited by 50 publications

References 27 publications

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

Nano Diesel Soot Particles Reduce Wear and Friction Performance Using an Oil Additive on a Laser Textured Surface

Laser Interference Lithography for Applications in Biomedicine

Effects of Sintering Temperature on Structural, Morphological, and Mechanical Properties of Co-Cr-Mo Alloys Coated with ZrO2 Ceramic Films

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