Production and Characterization of Boride and Carbide Layers on AISI 15B30 Steel

• Published in: Journal of materials engineering and performance Vol. 29; no. 6; pp. 3534 - 3541
• Main Authors: Triani, Rafael Magalhães, Gomes, Lucas Fuscaldi De Assis, Neto, Amadeu Lombardi, Totten, George Edward, Casteletti, Luiz Carlos
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2020
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Materials Science; Quality Control; Reliability; Safety and Risk; Tribology; AISI 15B30; boriding; microadhesive wear test; thermo-reactive deposition (TRD)
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-020-04698-w

Carbon-boron steels are widely used as components in ground engaging tools and agriculture components, being subject to different forms of tribological wear. The use of treatments to produce hard layers and wear resistance can significantly increase the time to failure and reduce operating costs. In this work, boriding and thermo-reactive deposition (TRD) treatments for the production of boride and carbide layers were performed on the substrates of AISI 15B30 steel to improve tribological characteristics of the surface. The compound phases present in the layers and properties such as hardness, adhesive wear resistance, and layer adhesion were characterized by optical microscope, x-ray diffraction, Knoop microhardness, microadhesive wear test and Rockwell C indentation adhesion according to VDI 3198. The results showed layers with high hardness (1400-2500 HK), greater microadhesive wear resistance (between approximately 10 and 14 times higher than the substrate) and excellent delamination resistance.