4.0 Article

Electrolytic Corrosion of Materials of TiCrB2-AlN System in 3% NaCl Solution

Journal

JOURNAL OF SUPERHARD MATERIALS
Volume 39, Issue 1, Pages 34-40

Publisher

ALLERTON PRESS INC
DOI: 10.3103/S106345761701004X

Keywords

electrolytic corrosion; titanium-chromium diboride; aluminum nitride; composite material

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The corrosion resistance of titanium-chromium-diboride-based ceramic materials and cermets in 3% NaCl solution (to simulate sea water) is studied by the method of potentiodynamic polarization curves. The composition and microstructure of oxidized specimen surfaces are examined. Adding small amounts of AlN (5 to 10 vol %) to TiCrB2 provides an essential improvement of the corrosion resistance. Introduction of an NiAlCr metallic binder into the material composition results in a lower resistance to anodic oxidation.

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