Bilayer growth kinetics and tribological characterization of boronized AISI M2 steel

Author:

Ortiz Domínguez Martín1,Keddam Mourad2,Gómez Vargas Oscar Armando3,Ares de Parga Gonzalo4,Zuno Silva Jorge5

Affiliation:

1. Department of Mechanical Engineering , Escuela Superior de Ciudad Sahagún-Mechanical Engineering , Carretera Cd. Sahagún-O tumba s/n, Zona Industrial, 42110 , Ciudad Sahagún , Hidalgo , Mexico

2. SDM, USTHB , B.P. 32 El Alia Bab Ezzouar, 16000 , Algiers , Algeria

3. Instituto Tecnológico de Tlalnepantla-ITTLA , Mexico , Mexico

4. Department of Physics , Instituto Politecnico Nacional Escuela Superior de Física y Matemáticas , U. P. Adolfo López Mateos, Zacatenco, 07738 , Mexico City , Mexico

5. Autonomous University of Hidalgo State , Mexico , Mexico

Abstract

Abstract The AISI M2 steel has been treated by solid boriding between 1123 and 1273 K for an exposure time of 2–8 h. In these circumstances, a bilayer constituted by FeB and Fe2B has been formed with interfaces nearly flat. The tribological behavior and decohesion resistance of boride coatings were studied by using the following characterizations: (Rockwell-C cohesion, pin-on-disc and wear scratch tests). The modeling of process kinetics was undertaken based on two different approaches (the mass balance equations and the integral method). The assessed values of boron activation energies in FeB and Fe2B arising from the two models were nearly similar. In addition, the predicted layers’ thicknesses at 1243 and 1273 K during 10 h were concordant with the experimental values.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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