The Effect of Boronizing on Metallic Alloys for Automotive Applications |
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Authors: | Roumiana S Petrova Naruemon Suwattananont Veljko Samardzic |
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Affiliation: | (1) Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA;(2) Mechanical Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102, USA |
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Abstract: | In this study the wear resistance, corrosion resistance, and oxidation resistance of boronized metallic alloys were investigated.
Thermochemical treatment was performed by powder pack boronizing process at temperature 850-950 °C for 4 h. Saw-tooth morphology
and smooth interface microstructures were observed with an optical microscope; microhardness was measured across the coating
depth. The phases present in the boron coatings depend on the substrate material. High-temperature oxidation resistance was
investigated and it was found that boron coating on ferrous alloys can resist temperatures up to 800 °C. The corrosion resistance
of the boronized samples was improved and the corrosion rate was calculated for boronized and plain specimens. Wear testing
was conducted by following the procedures of ASTM G99, ASTM D2526, and ASTM D4060. The obtained experimental results revealed
that boronizing significantly improves the wear-resistance, corrosion-resistance, and oxidation resistance of metallic alloys.
This article was presented at Materials Science & Technology 2007, Automotive and Ground Vehicles symposium held September
16-20, 2007, in Detroit, MI. |
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Keywords: | boronizing corrosion resistance high-temperature oxidation wear resistance |
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