Carbon Coatings onto Shape Memory Alloys

Pelka, A.; Ostrowski, G.; Niedzielski, P.; Mitura, S.; Stroz, D.; Morawiec, H.; Sysa, A.

doi:10.1106/152451102024661

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Excellent biocompatibility and bio-tolerance of DLC films in orthopedic and cardiovascular applications have been demonstrated by in vivo testing, which were applied to the NiTi shape memory alloys used for implants and orthodontic wires in order to improve biocompatibility. 52 It has been shown to be effective in reducing thrombogenecity 14 and preventing nickel dissolution 17 when it was used as the coating of 316L stainless steel stent surface. By our group, a thickness of about 1 lm thin film of DLC was synthesized on Mg alloy substrate by radio frequency (rf) PACVD.…”

Section: Cvdmentioning

confidence: 99%

Surface Modifications of Magnesium Alloys for Biomedical Applications

2011

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In recent years, research on magnesium (Mg) alloys had increased significantly for hard tissue replacement and stent application due to their outstanding advantages. Firstly, Mg alloys have mechanical properties similar to bone which avoid stress shielding. Secondly, they are biocompatible essential to the human metabolism as a factor for many enzymes. In addition, main degradation product Mg is an essential trace element for human enzymes. The most important reason is they are perfectly biodegradable in the body fluid. However, extremely high degradation rate, resulting in too rapid loss of mechanical strength in chloride containing environments limits their applications. Engineered artificial biomaterials with appropriate mechanical properties, surface chemistry, and surface topography are in a great demand. As the interaction between the cells and tissues with biomaterials at the tissue--implant interface is a surface phenomenon; surface properties play a major role in determining both the biological response to implants and the material response to the physiological condition. Therefore, the ability to modify the surface properties while preserve the bulk properties is important, and surface modification to form a hard, biocompatible and corrosion resistant modified layer have always been an interesting topic in biomaterials field. In this article, attempts are made to give an overview of the current research and development status of surface modification technologies of Mg alloys for biomedical materials research. Further, the advantages/disadvantages of the different methods and with regard to the most promising method for Mg alloys are discussed. Finally, the scientific challenges are proposed based on own research and the work of other scientists.

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Section: Cvdmentioning

confidence: 99%

Surface Modifications of Magnesium Alloys for Biomedical Applications

2011

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The Design and Manufacture of Biomedical Surfaces

et al. 2007

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Surfaces are the primary place of contact between a biomaterial and its host organism. Typically, prostheses have to fulfil demanding structural and mechanical requirements, yet the material best for those functions may be bio-incompatible. Surface treatment or coating provides a means to overcome that problem, which means both integration within the host physiology and stabilization with respect to corrosion and wear. The adsorption of biomacromolecules is pivotal for biocompatibility. The impossibility of keeping proteins away from most implants means that very careful consideration has to be given to this aspect, and both prevention (for bloodstream implants) and promotion (for bone replacement and repair) occur with equal importance. This paper also considers the metrology of relevant physical and chemical aspects of surfaces.

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Carbon Coatings onto Shape Memory Alloys

Cited by 2 publications

References 11 publications

Surface Modifications of Magnesium Alloys for Biomedical Applications

Surface Modifications of Magnesium Alloys for Biomedical Applications

The Design and Manufacture of Biomedical Surfaces

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