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Design and production of spray-formed boron-modified stainless steels with high corrosion and wear resistance

Grant number: 17/09237-4
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): August 01, 2017
Effective date (End): May 19, 2019
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal researcher:Claudio Shyinti Kiminami
Grantee:Guilherme Yuuki Koga
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys, AP.TEM


Wear and corrosion resistance are basic requirements of materials which withstand aggressive environments such as those found in the petrochemical industry. Stainless steels are interesting due to their combination of good mechanical properties and high corrosion resistance. When modified with boron, the corrosion resistant stainless steel matrix is reinforced with hard borides resistant to wear. Although the recent progress on the minor boron additions on the microstructure and properties of boron-modified stainless steels, studies on their impact on the wear and corrosion properties are limited. This research project aims to design different microstructures consisted of stainless steel matrix reinforced by hard borides, using spray forming to produce the final alloy. Different stainless steel grades are to be modified with minor boron additions in view to assure both high wear and corrosion resistance. Three master alloys will be considered: ferritic, austenitic, and duplex stainless steels. Their composition will be modified with boron based on thermodynamic calculations. Microstructure characterizations of the spray-formed boron-modified stainless steels will be performed to validate the thermodynamic calculations. Wear properties will be investigated by pin-on-disc tests. Different applied loads, sliding speeds, and wear distances will be considered. The galvanic and long-term corrosion resistance in acid chloride-rich media will be evaluated. At the end, it is expected to identify the better application for each microstructure based on its wear and corrosion properties. (AU)

Scientific publications (6)
(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)
SANTANA, D. A.; KOGA, G. Y.; WOLF, W.; BATAEV, I. A.; RUKTUEV, A. A.; BOLFARINI, C.; KIMINAMI, C. S.; BOTTA, W. J.; JORGE JR, A. M. Wear-resistant boride reinforced steel coatings produced by non-vacuum electron beam cladding. SURFACE & COATINGS TECHNOLOGY, v. 386, MAR 25 2020. Web of Science Citations: 0.
KOGA, G. Y.; ZEPON, G.; SANTOS, L. S.; BOLFARINI, C.; KIMINAMI, C. S.; BOTTA, W. J. Wear Resistance of Boron-Modified Supermartensitic Stainless Steel Coatings Produced by High-Velocity Oxygen Fuel Process. JOURNAL OF THERMAL SPRAY TECHNOLOGY, v. 28, n. 8, p. 2003-2014, DEC 2019. Web of Science Citations: 0.
KOGA, GUILHERME YUUKI; BRANQUINHO E SILVA, ANA MARTHA; WOLF, WITOR; KIMINAMI, CLAUDIO SHYINTI; BOLFARINI, CLAUDEMIRO; BOTTA, WALTER JOSE. Microstructure and mechanical behavior of Al92Fe3Cr2X3 (X = Ce, Mn, Ti, and V) alloys processed by centrifugal force casting. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 8, n. 2, p. 2092-2097, APR 2019. Web of Science Citations: 1.
KOGA, G. Y.; WOLF, W.; SCHULZ, R.; SAVOIE, S.; BOLFARINI, C.; KIMINAMI, C. S.; BOTTA, W. J. Corrosion and wear properties of FeCrMnCoSi HVOF coatings. SURFACE & COATINGS TECHNOLOGY, v. 357, p. 993-1003, JAN 15 2019. Web of Science Citations: 7.
KOGA, GUILHERME Y.; OTANI, LUCAS B.; SILVA, ANA M. B.; ROCHE, VIRGINIE; NOGUEIRA, RICARDO P.; JORGE, JR., ALBERTO M.; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO S.; BOTTA, WALTER J. Characterization and Corrosion Resistance of Boron-Containing-Austenitic Stainless Steels Produced by Rapid Solidification Techniques. MATERIALS, v. 11, n. 11 NOV 2018. Web of Science Citations: 6.
KOGA, GUILHERME Y.; JORGE, JR., ALBERTO M.; ROCHE, VIRGINIE; NOGUEIRA, RICARDO P.; SCHULZ, ROBERT; SAVOIE, SYLVIO; MELLE, ANA K.; LOABLE, CAROLE; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO S.; BOTTA, WALTER J. Production and Corrosion Resistance of Thermally Sprayed Fe-Based Amorphous Coatings from Mechanically Milled Feedstock Powders. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v. 49A, n. 10, p. 4860-4870, OCT 2018. Web of Science Citations: 6.

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