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Preparation and Performance Research on the Al2O3–TiB2 Composite Ceramic Coatings Prepared by Solid State Reaction on AZ31B Alloy

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Al–TiO2–B2O3 reaction system was induced and the ultra-fine powder was prepared by mechanical alloying (MA), and the Al2O3–TiB2 composite ceramic coatings were prepared by solid state reaction method on AZ31B alloy surface. The phase composition of powder and coatings, particle size, coatings cross section were studied by X-ray, Laser particle size analyzer, SEM, DTA. The wear and corrosion resistance of the coatings were tested. The results show that the powders granularity is closed to nano-scale; such as Al2O3, TiB2, ZnAl2O4 and MgAl2O4 are found in the coatings with 400 °C calefaction solidify; and the relative wear resistance of sealant coatings increase by up to 16.4 times. The relative corrosion resistance of coatings increased by up to 13.37 times, but it increases by up to 37.68 times after treatment by sealant.
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Keywords: COMPOSITE CERAMIC COATINGS; CORROSION RESISTANCE; SOLID STATE REACTION; ULTRA-FINE CERAMIC POWDER; WEAR RESISTANCE

Document Type: Research Article

Publication date: September 1, 2012

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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