Boride coatings on non-ferrous materials in a fluidized bed reactor and their properties |
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| Authors: | K.G. Anthymidis G. Stergioudis |
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| Affiliation: | 1. Laboratory of Physical Metallurgy, Department of Mechanical Engineering, Aristotle University of Thessaloniki, 54006, Thessalonik, Greece;2. Applied Physics Laboratory, Department of Physics, Aristotle University of Thessaloniki, 54006, Thessaloniki, Greece |
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| Abstract: | Fluidized bed technology has been successfully used in the formation of different types of coatings, e.g. aluminizing [Surf. Coat. Technol. 120 (1999) 151; Steel Res. 66 (1995) 318; J. Mater. Sci. 35 (2000) 5493], chromizing [Surf. Coat. Technol. 120 (1999) 151; Steel Res. 66 (1995) 318; J. Mater. Sci. 35 (2000) 5493], nitriding [Heat treatment in fluidized bed furnaces, 1993], carburizing [Heat treatment in fluidized bed furnaces, 1993], carbonitriding [Heat treatment in fluidized bed furnaces, 1993]. Recently, this technology has been used for the deposition of hard boride layers onto ferrous substrates [Mater. Lett. 51 (2001) 156; Fifth International Conference on Heat Treatment Materials, Budapest, Hungary, vol. 3, 1986]. In the present paper, we used fluidized bed technology to deposit boride coatings onto non-ferrous metals and alloys. The coatings were examined by means of optical microscopy, Vickers microhardness and X-ray diffraction, to determine thickness and morphology, phase formation and properties. The properties of dry wear and thermal cycling oxidation of the coatings were evaluated. The as-produced coatings were characterized by adequate thickness and improved wear and oxidation resistance. |
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| Keywords: | Boriding Fluidized bed Non–ferrous substrates |
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