Tribocorrosion behavior and ions release of CoCrMo alloy coated with a TiAlVCN/CN multilayer in simulated body fluid plus bovine serum albumin

The Brinell, Vickers, Meyer, Rockwell, Shore, IHRD, Knoop, Buchholz, and nanoindentation methods used to measure the indentation hardness of materials at different scales are compared, and main issues and misconceptions in the understanding of these methods are comprehensively reviewed and discussed. Basic equations and parameters employed to calculate hardness are clearly explained, and the different international standards for each method are summarized. The limits for each scale are explored, and the different forms to calculate hardness in each method are compared and established. The influence of elasticity and plasticity of the material in each measurement method is reviewed, and the impact of the surface deformation around the indenter on hardness values is examined. The difficulties for practical conversions of hardness values measured by different methods are explained. Finally, main issues in the hardness interpretation at different scales are carefully discussed, like the influence of grain size in polycrystalline materials, indentation size effects at micro-and nanoscale, and the effect of the substrate when calculating thin films hardness. The paper improves the understanding of what hardness means and what hardness measurements imply at different scales.

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“…16). As the depth of penetration h increases, more of the mechanical contribution will come from the substrate [75].…”

Section: Scale Effects On Coating/substrate Systemsmentioning

confidence: 99%

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview

2016

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“…Hence, C‐dots have been recently introduced to biochemical engineering for application in probing Cu 2+ , Fe 2+ and Hg 2+ ion with selective and sensitive responses . Molybdenum is one of the heavy metals that is widely used in industry and biometal alloy implants . Molybdenum is also the essential trace element for human metabolism and it is a cofactor for several enzymes involved in oxidation/reduction reactions .…”

Section: Introductionmentioning

confidence: 99%

Luminescence of lemon‐derived carbon quantum dot and its potential application in luminescent probe for detection of Mo⁶⁺ ions

et al. 2018

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This article reports on the first attempt of a systematic study on the synthesis of carbon dots (C-dots) for the potential applications in labeling and detection of molybdenum ion (Mo ). Carbon dots (C-dots) were synthesized directly via a simple hydrothermal method using lemon juices as carbon precursor with different temperatures to control the luminescence of C-dots. The obtained C-dots had strong green light emission and the ability to use its luminescence properties as probes for Mo detection application, which is based on Mo induced luminescence quenching of C-dots. This analysis system exhibits strong sensitivity and good selectivity for Mo ion, and a detection limit as low as 20 ppm is achieved. These results suggest that the present C-dots have potential application in optoelectronic, labeling and luminescent probing of Mo ions.

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“…This is an efective prevention of wear and corrosion for the substrate. Hence, the amount of releasing metal ions into surrounding (body luid) can be minimised as the coated metal exhibit beter corrosion resistance [46][47][48].…”

Section: Sol-gel Dip-coating Methodsmentioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

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The use of metallic biomaterials for replacement of biomedical implants has been traced back from the nineteenth century. These metallic biomaterials have been declared as clinical success as their mechanical properties that satisfy the prerequisite of the human bone. Nevertheless, critical issues of the materials when they are utilised as implants; including the releasing toxic and harmful metal ions through wear and corrosion processes after longer implantation. Besides that, the bonding strength between bone and implants itself is considered weak due to the diferent components of human bone and metal implants. Hence, developing hydroxyapatite (HAp) coating on metallic biomaterials is expected to overcome the problems faced by biocompatible metallic biomaterials. As far as this, various commercial techniques have been introduced to develop the HAp coating on metallic biomaterials. The techniques are including plasma-spraying method, sol-gel dip-coating, electrochemical deposition and high-velocity suspension plasma-spraying. The formation of HAp coating on metallic biomaterials improved the corrosion resistance together promoting its load-bearing ability and enhanced substrate-coating adhesion.

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Tribocorrosion behavior and ions release of CoCrMo alloy coated with a TiAlVCN/CN multilayer in simulated body fluid plus bovine serum albumin

Cited by 45 publications

References 57 publications

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview

Luminescence of lemon‐derived carbon quantum dot and its potential application in luminescent probe for detection of Mo⁶⁺ ions

Hydroxyapatite-Based Coating on Biomedical Implant

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Tribocorrosion behavior and ions release of CoCrMo alloy coated with a TiAlVCN/CN multilayer in simulated body fluid plus bovine serum albumin

Cited by 45 publications

References 57 publications

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview

Luminescence of lemon‐derived carbon quantum dot and its potential application in luminescent probe for detection of Mo6+ ions

Hydroxyapatite-Based Coating on Biomedical Implant

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Product

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Luminescence of lemon‐derived carbon quantum dot and its potential application in luminescent probe for detection of Mo⁶⁺ ions