Production and characterization of coatings on steel by using FeCrNbB glass former alloy

• Grant number: 13/13860-8
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2013
• End date: February 28, 2014
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Claudio Shyinti Kiminami
• Grantee: Victor Felipe Moscoso Linares
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Corrosion and wear are important issues in many industrial applications, which can cause injuries and economic losses. The use of coatings is one of the most effective strategies to protect materials against corrosion and to increase the wear resistance of materials, and the coating made of iron and nickel-based metallic glass are promising for this application. These alloys exhibit excellent corrosion resistance due to the absence of grain boundaries and homogeneous chemistry, and also exhibit good mechanical properties and are economically viable, in the case of Fe. In this context, the aim of this work for the student (Scientific Iniciation - IC) is the production and the characterization of coatings, using an amorphizable alloy based on Fe-Cr-Nb-B focusing the wear properties. Initially, preliminary studies will be made for the evaluation of glass forming ability (GFA) for selected composition and the influence of impurities on this behavior. The second step of this work will be the production of coatings through spray forming process using pre-layer of nickel alloys, whose aim is to allow the adhesion of particles on the substrate. The coated sample will be characterized using X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM)and the wear resistance will also evaluated. (AU)