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3 Inżynieria Biomateriałów

3 2006

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Growth of cells on carbon coatings manufactured in new MW/RF reactor

100%

Subrtova I. , Grausova L. , Bacakova L. , Kaczorowski W.

2006

tom R. 9, nr 56-57

19-21

Due to unique physico-chemical properties and good biocompatibility are carbon layers considered to be promising material for wide field of biomedical applications. In this study, carbon films were manufactured in microwave and radio frequency plasma reactor using dual frequency method (MW/RF PCVD - microwave and ratio frequency plasma chemical deposition). Four various processes of deposition were used for preparation layers on substrates of medical stainless steel AISI 316 L. On samples of all four processes, growth and adhesion of cells were observed.

The influence of nanocrystalline diamond layers obtained by MW/RF PECVD method on surface properties of AISI316L steel

72%

Błaszczyk T. , Burnat B. , Scholl H. , Niedzielski P. , Kaczorowski W.

2006

tom R. 9, nr 56-57

31-34

Determination of corrosion parameters AISI316L with nanocrystalline diamond (NCD) layers deposited by means of new Microwave / Radio Frequency Plasma Enhanced Chemical Vapour Deposition (MW/RF PECVD) method in testing solution 0.5 M NaCl with a basic aim of presented work. We measured corrosion potentials, potentiodynamic characteristics, breakdown and repassivation potentials, corrosion resistance and impedance characteristics of AISI316L samples with- and without NCD layers. Summarizing obtained results it can be stated that NCD layers improve corrosion features of AISI316L and that surface preparation techniques have insignificant influence on these features.

Electric potential of biomaterials coated with dielectric carbon layer and non-coated in water and serum

58%

Urbański S. , Niedzielski P. , Mitura S. , Wierzchoń T. , Sokołowska A.

2006

tom R. 9, nr 56-57

21-24

Electric potentials, established in water and human blood serum, of the electrodes made of platinum, graphite, Ti6Al4V alloy, TiN, AlSi316L steel, oxidized steel and the materials coated with diamond like carbon layer (DLC) and a nanocrystalline-diamond layer (NCD) were determined. The values of the potentials of non-coated materials increased with increasing electron work function (Phi) of investigated materials in reasonable accordance. The difference between the potentials measured in serum and in water was ascribed to be differing molecular electron structure of the proteins in contact with the electrodes. Electrode potentials of different materials coated with the same thin dielectric carbon layer varied significantly depending on the (Phi) value of the substrate. In this way the selection of a substrate material permits influencing on the interaction between NCD (DLC) coating and serum compounds. The potential of an electrode has appeared to be a simple but sensitive indicator of the phenomena that take place on the biomaterial surface.