Corrosion Resistance of Niobium and Vanadium Carbide Layers Produced by Thermoreactive Diffusion Treatments on Spheroidal Cast Iron
Published In
Heat Treat 2017: Proceedings of the 29th ASM Heat Treating Society Conference
Document Type
Citation
Publication Date
10-2017
Abstract
In the present study unalloyed spheroidal graphite iron was compared with a sample alloyed with copper and nickel (Cu- Ni). Samples of those materials were treated in salt bath (a composite of sodium borate, aluminum, iron-niobium and/or iron-vanadium) at 1000 °C for 2 hours. This resulted in layers of niobium carbide (NbC), vanadium carbide (VC) and ternary carbide of niobium and vanadium (NbVC2). Characterization of these layers was obtained by optical microscopy, X-ray diffraction and microhardness Vickers. The microhardness and the thickness results were statistically analyzed by the two factors variance analysis method. The efficiency of the layered surface in increasing corrosion resistance was demonstrated by submitting it to potentiodynamic polarization corrosion tests.
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Conference proceeding can be found online at: https://www.asminternational.org/web/heat-treat-2017/home
Persistent Identifier
https://archives.pdx.edu/ds/psu/25911
Citation Details
C. Soares, F.E. Mariani, G.C. Rego, G.S. Takeya, G.E. Totten, and L.C. Casteletti, “Corrosion Resistance of Niobium and Vanadium Carbide Layers Produced by Thermoreactive Diffusion Treatments on Spheroidal Cast Iron ”, Heat Treat 2017: Proceedings of the 29th ASM Heat Treating Society Conference, October 24–26, 2017, Columbus, Ohio, USA, 6 pp
Description
Copyright © 2017 ASM International®
Presented at Heat Treat 2017: Proceedings of the 29th ASM Heat Treating Society Conference October 24–26, 2017, Columbus, Ohio, USA