Examination of Pitting and Wear in Borided, Carburized, and Borocarburized AISI 8620 Gears

• Published in: Tribology transactions Vol. 53; no. 4; pp. 485 - 490
• Main Authors: DÜZCÜKOGLU, Hayrettin, CALIK, Adnan, IMREK, Hüseyin, KARAKAS, Mustafa S
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.07.2010; Taylor & Francis; Taylor & Francis Inc
• Subjects: Applied sciences; Boron; Boronizing; Carburizing; Coatings; Cracks; Exact sciences and technology; Fracture mechanics (crack, fatigue, damage...); Friction; Friction Reducing; Friction, wear, lubrication; Fundamental areas of phenomenology (including applications); Gears; Hardness; Machine components; Mechanical engineering. Machine design; Nickel chromium molybdenum steels; Physics; Pitting (wear); Rolling-Contact Fatigue; Solid mechanics; Spur Gears; Structural and continuum mechanics; Tribology; Wear; Wear resistance; Wear Resistant; Wear tests; Boronization; Boriding; Surface crack; Hardness; Coatings; Friction Reducing; Wear Resistant; Boron; Corrosion; Stainless steel; Heavy load; Wear; Friction coefficient; Wear resistance; Carburizing; Spur gear; Rolling-Contact Fatigue; Spur Gears; Erosion; Tribology
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402000903457458

The most important characteristic feature of boronizing is that the boron layer obtained at the surface has a very high hardness, improved wear resistance, and low coefficient of friction. Due to the sudden transition from a very hard surface to a relatively soft core, cracks are likely to occur at the interface. These cracks may lead to spalling, and therefore the advantageous effects of boronizing are limited under heavy loads. In this study, the pitting and wear behavior of spur gear surfaces of AISI 8620 steel treated by carburizing, boronizing, and borocarburizing have been examined.