Evaluation of the Effect of Surface Preparation on Corrosion Properties of Cerametallic Composites in Titanium Matrix

Abstract Metal matrix composites reinforced ceramic particles, are widely used in industry, wherever high resistance to abrasive wear, erosion and corrosion is necessary. Cermets, in which titanium carbide (TiC) is used as reinforcing phase, are particularly interesting for improving the strength, stiffness and wear resistance, especially at elevated temperatures. The paper presents the results of corrosion tests of 316L stainless steel composite reinforced nc-TiC particles, at different stages of surface preparation: grinding, polishing, electropolishing and oxidation in the furnance. Measurements of potentiodynamic polarization curves in 3% NaCl solution were performed. The results have showed the negative impact of the nanocrystalline TiC strengthening phase on corrosion resistance of composites. It was also found that electropolishing treatment is the most preferred way to prepare the surface for 316L stainless steel as well as TiC reinforced composites.

Keywords Metal matrix composite, titanium, titanium carbide, corrosion resistance, SLM.

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Dynamic analyses of a flat plate and a beam subjected to a moving load

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