Production and microstructural characterization of metallic coatings using Fe-based amorphous alloys

• Grant number: 12/10631-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2012
• End date: July 31, 2013
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Walter José Botta Filho
• Grantee: Guilherme Yuuki Koga
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

This project has as objectives to produce coatings in commercial steel using Fe-based amorphous alloys, and to characterize these coatings with respect of the microstructure, mechanical stability in the interface, and hardness/wear. Several amorphous alloys will be evaluated, initially with the production of metallic ribbons by fast solidification via melt-spinning processing. The most adequate alloys will then be produced in the powder form by gas atomization and high-energy milling; coatings of the commercial steel will be carried out using thermal aspersion by HVOF (high-velocity oxy-fuel). The characterization of the coated samples will be carried out by X-rays diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Mechanical properties evaluation will be carried out by hardness and wear tests.(AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

KOGA, GUILHERME YUUKI; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO SHYINTI; JORGE, ALBERTO MOREIRA, JR.; BOTTA, WALTER JOSE. An Overview of Thermally Sprayed Fe-Cr-Nb-B Metallic Glass Coatings: From the Alloy Development to the Coating's Performance Against Corrosion and Wear. JOURNAL OF THERMAL SPRAY TECHNOLOGY, v. 31, n. 4, p. 33-pg., 2022-03-30. (13/05987-8, 12/10631-5, 05/59594-0, 17/09237-4)