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research-article

Duplex surface treatment of AISI 1045 steel via pack boriding and plasma nitriding: characterization and tribological studies

[+] Author and Article Information
Ali Habbolahzadeh

Department of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
ahabibolahzadeh@semnan.ac.ir

Farahnaz Haftlang

Department of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
f.haftlang@ut.ac.ir

1Corresponding author.

ASME doi:10.1115/1.4037465 History: Received April 16, 2017; Revised June 28, 2017

Abstract

For the first time, formation of cubic boron nitride (c-BN), besides Fe2B and iron nitrides, in bronitride coating was detected. Bronitride coating was applied on AISI 1045 steel substrates via duplex treatment of pack boriding and plasma nitriding (B-PN). Scanning electron microscope (SEM), X-ray diffractometer (XRD), and pin-on-disk wear test were utilized to evaluate microstructures, phases, and wear properties of the coatings. The surface of the as-coated sample exhibited a pebble-like and compact structure, and the cross-sectional morphology of the coatings showed a saw-tooth interface with substrate. Duplex treated sample revealed superior wear resistance in comparison with the borided one.

Copyright (c) 2017 by ASME
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