Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising

Surface modification techniques have been developed significantly in the last couple of decades for enhanced tribological performance of artificial hip implants. Surface modification techniques improve biological, chemical and mechanical properties of implant surfaces. Some of the most effective techniques, namely surface texturing, surface coating, and surface grafting, are applied to reduce the friction and wear of artificial implants. This article reviews the status of the developments of surface modification techniques and their effects on commonly used artificial joint implants. This study focused only on artificial hip joint prostheses research of the last 10 years. A total of 27 articles were critically reviewed and categorized according to surface modification technique. The literature reveals that modified surfaces exhibit reduced friction and enhanced wear resistance of the contact surfaces. However, the wear rates are still noticeable in case of surface texturing and surface coating. The associated vortex flow aids to release entrapped wear debris and thus increase the wear particles generation in case of textured surfaces. The earlier delamination of coating materials due to poor adhesion and graphitization transformation has limited the use of coating techniques. Moreover, the produced wear debris has adverse effects on biological fluid. Conversely, the surface grafting technique provides phospholipid like layer that exhibited lower friction and almost zero wear rates even after a longer period of friction and wear test. The findings suggest that further investigations are required to identify the role of surface grafting on film formation and heat resistance ability under physiological hip joint conditions for improved performance and longevity of hip implants.

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“… (a) Surface texturing on femoral head [ 33 ] and (b) SEM images of different types of fabricated surface texturing. [ 9 ] …”

Section: Surface Modification Techniques and Their Recent Developmentmentioning

confidence: 99%

Status of surface modification techniques for artificial hip implants

Ghosh

Abanteriba

2016

Science and Technology of Advanced Materials

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“…While under the negative effects of friction in normal applications, the service performance of Ti6Al4V engineering components would be decreased and then the lifecycle of the whole equipment might also be reduced [ 100 , 101 ]. Surface texture-based surface treatments developed by different scientists and engineers have provided promising approaches to overcome the relevant issues [ 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 ,…”

Section: Surface Texture-based Surface Treatments With Improved Pementioning

confidence: 99%

“…In general, the active roles of ST in tribological performance lie in the main aspects as follows (see Figure 1 ) [ 57 , 58 ]: service as storage of the solid/grease lubricant to provide continuous lubrication and improve the elastohydrodynamic effect under liquid lubrication; trapping wear debris generated during service and minimizing abrasive wear, reduction in nominal contact area. ST has been extensively applied on various materials for different purposes [ 52 , 53 , 59 , 60 , 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Texture-Based Surface Treatments on Ti6Al4V Titanium Alloys for Tribological and Biological Applications: A Mini Review

Lin

Zou

et al. 2018

Materials

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Surface texture (ST) has been confirmed as an effective and economical surface treatment technique that can be applied to a great range of materials and presents growing interests in various engineering fields. Ti6Al4V which is the most frequently and successfully used titanium alloy has long been restricted in tribological-related operations due to the shortcomings of low surface hardness, high friction coefficient, and poor abrasive wear resistance. Ti6Al4V has benefited from surface texture-based surface treatments over the last decade. This review begins with a brief introduction, analysis approaches, and processing methods of surface texture. The specific applications of the surface texture-based surface treatments for improving surface performance of Ti6Al4V are thoroughly reviewed from the point of view of tribology and biology.

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“…Similarly, studies for improving the tribological performance using plasma carburizing and DLC coatings have been found elsewhere. 20,21 However, still, the hip implant life is limited to 10–15 years. Studies show that wear of UHMWPE has been one of the major reasons for the MoP implant failure.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive analysis of geometrical parameters of crosshatched texture for enhanced tribological performance under biological environment

Kashyap

Ramkumar

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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This study optimizes the texture geometry by investigating the individual effect of texture depth and area density of cross hatched texture to improve the tribological performance of hip implant at normal walking speed. Texture width was selected conforming to Hertzian contact of Ti6Al4V/ultrahigh molecular weight polyethylene tribo-pair. Crosshatched textures with different depths and area densities were fabricated on polished Ti6Al4V blocks using laser surface texturing technique. Tribology tests were carried out for different loads under bio-lubricated condition. Result shows significant influence of texture depth and area density for better tribological performance of the tribo-pair. Nearly 50% friction reduction and 15 times reduction in wear obtained for 5 µm depth at 25% area density. Surface morphology of worn-out pins showed abrasion wear mechanism.

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Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburising

Cited by 24 publications

References 37 publications

Status of surface modification techniques for artificial hip implants

Status of surface modification techniques for artificial hip implants

Surface Texture-Based Surface Treatments on Ti6Al4V Titanium Alloys for Tribological and Biological Applications: A Mini Review

Comprehensive analysis of geometrical parameters of crosshatched texture for enhanced tribological performance under biological environment

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