Mechanical Behavior on Cr Base Steels Surface Treatment

Abstract

It is known that the diffusion of boron atoms on the surface of metals and alloys can increase the hardness, wear and corrosion resistance of engineering components. Boriding is an alternative method of sample treatment when the manual work required in powder boriding needs to be decreased. In addition, its advantage lies in high volumes of work and in selective treatments. Boron carbide consists of B4C (approximately 76 wt% boron). Using gases or powders as boronizing process gives rise to boride coatings constituted by an inner layer of Fe2B (hardness 15GPa) and an outer layer of FeB (hardness 25 GPa) [1,2]. Many industrial processes require the use of highly wear-resistant materials, tools steel, hot work being these basic Cr steels in applications such as extrusion dies for light alloys, matrices for pressing, forging dies and for molding plastic.

Growth Kinetics and Mechanical Characterization of a Hard Boron Coating on a Tool Steel

“…The boron process is suitable for devices that do not work with loads higher than 2000 N under fatigue conditions [1]. In mechanical devices (by sliding) the proper use of energy can be modified from a redesign in the mechanisms or chemical and superficial change in the materials in order that it is "efficient"; The study of the hard coatings has interest and is due to the fact that it gives the steels a high surface resistance to the adhesive, abrasive and erosive wear, also it obtains a resistance to the oxidation wear, As well as increases the life time of the machinery and obtain improvements in energy and materials saving [2,3,4]. For this study, steel AISI L6 (DIN 1.2714) has been chosen for its wide industrial application such as cutting blades, tool, mechanical devices, die forging, agriculture tools and other devices.…”