Hard and Wear Resistant Surfaces for Load Bearing Metal Implants

Balla, Vamsi Krishna; Bose, Susmita; Bandyopadhyay, Amit

doi:10.1002/9781118144565.ch12

Cited by 1 publication

(1 citation statement)

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“…The combination of these metals has the potential to allow metal‐on‐metal joint contact and/or strengthening of biomedical components. The mechanical advantages include supporting increased loads with smaller geometries, reduced stress shielding in surrounding bone, and improved in vitro wear resistance with a decrease in Co ion release . Microstructure at the interface between the coating and the substrate is of greatest interest.…”

Section: Introductionmentioning

confidence: 99%

Laser deposited coatings of Co-Cr-Mo onto Ti-6Al-4V and SS316L substrates for biomedical applications

Wilson

Jones

Jin

et al. 2013

J. Biomed. Mater. Res

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Functionally gradient bio-coating material was built by laser deposition. Co-Cr-Mo material was deposited on a Ti-6Al-4V substrate transitioning from 0% to 100%. Control over the cooling rate is shown to be a key to reduce the effects of thermal expansion differences of the materials. The microstructures and composition of the functionally gradient material (FGM) were characterized using an optical microscope, SEM, EDS, and XRD. EDS results showed a gradual transition to 50% Co-Cr-Mo and ∼100% Co-Cr-Mo on the top layer. XRD analysis showed the absence of a brittle intermetallic phase that forms between Titanium and Cobalt. As the amount of Co-Cr-Mo increased, the microhardness of the FGM samples significantly increased. A comparison was made between Co-Cr-Mo deposited on SS316L substrates as well as Ti-6Al-4V. The bonding strength of the coatings on both substrates was tested and found to meet the ASTM standard requirement.

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Section: Introductionmentioning

confidence: 99%