This paper presents the results of study on titanium dioxide thin films prepared by atomic layer deposition method on a silicon substrate. The changes of surface morphology have been observed in topographic images performed with the atomic force microscope (AFM) and scanning electron microscope (SEM). Obtained roughness parameters have been calculated with XEI Park Systems software. Qualitative studies of chemical composition were also performed using the energy dispersive spectrometer (EDS). The structure of titanium dioxide was investigated by X-ray crystallography. A variety of crystalline TiO 2 was also confirmed by using the Raman spectrometer. The optical reflection spectra have been measured with UV-Vis spectrophotometry.
Purpose: The aim of this work was to define the influence of manufacturing technology
on the chemical composition, surface topography, physicochemical and electrochemical
properties of CoCr alloys obtained by casting technology and Direct Metal Laser Sintering.
Design/methodology/approach: This work presents microstructural and chemical
compositions obtained by scanning electron microscopy (SEM) and energy dispersive X-ray
analysis (EDS). Additionally, corrosion pitting analysis and roughness measurement were
conducted on the samples.
Findings: On the basis of the investigations, it can be stated that the prosthetic restorations
are different depending on the type manufacturing technology. Based on the obtained
results it was found that the structures of both materials are chemically inhomogeneous. The
investigated alloy exhibited similar polarization curve character.
Practical implications: The rapid prototyping methods are a new technology used for
getting details e.g. by CAD/CAM procedure. Using Direct Metal Laser Sintering (DMLS)
method can simplify the technology of producing prosthetics restrictions and is an alternate
way for standard casting technology.
Originality/value: The paper presents comparative research of two Co-Cr alloys, from
which the samples were obtained in conventional casting and DMLS technology.
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