Strengthening Protective Boride Coatings with SHS-Produced Fe2Al5

The wear resistance of diffusion coatings in conditions of specific pressures of 3, 7 and 10 MPa was studied. The boride coatings were prepared by means of diffusion methods using C45 steel as the substrate material. Research on the microstructure and redistribution of chemical elements on wear surface of a borided layer was carried out. It was found that the boride coatings should be used under a specific pressure of 7 MPa. It was found that the wear of friction couple coating of steel C45 under specific pressure of 3 MPa proceeds according to the oxidation wear mechanism, while under specific pressures of 7 and 10 MPa the abrasive wear prevails. The wear-induced segregation of atoms in coatings was studied using secondary mass-spectroscopy method (SIMS). Increased C, O, and B concentrations were noticed at the wear surface on depth from 50 to 2000 Å. The secondary wear-induced structure formation on the wear surface resulted in high wear resistance of diffusion borided coatings.

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Properties of diffusion carbide and boride coatings on structural steels

Soviet Materials Science ◽

10.1007/bf00716611 ◽

1979 ◽

Vol 14 (5) ◽

pp. 514-517

Author(s):

A. P. �pik ◽

E. N. Shavlovskii ◽

E. A. Mironov ◽

L. A. Kotlyarenko ◽

M. S. Yakovleva

Keyword(s):

Structural Steels ◽

Boride Coatings

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Boride coatings on steel using shielded metal arc welding electrode: Microstructure and hardness

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2009.02.010 ◽

2009 ◽

Vol 203 (16) ◽

pp. 2229-2235 ◽

Cited By ~ 26

Author(s):

Mehmet Eroglu

Keyword(s):

Arc Welding ◽

Shielded Metal Arc Welding ◽

Metal Arc Welding ◽

Boride Coatings ◽

Welding Electrode

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Mechanical Behavior on Cr Base Steels Surface Treatment

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.365.148 ◽

2015 ◽

Vol 365 ◽

pp. 148-153 ◽

Cited By ~ 1

Author(s):

M.A. Doñu Ruiz ◽

N. López-Perrusquia ◽

G. Urriolagoitia-Sosa ◽

Luis Héctor Hernández-Gómez ◽

D. Sánchez Huerta

Keyword(s):

Corrosion Resistance ◽

Boron Carbide ◽

Surface Treatment ◽

Outer Layer ◽

Industrial Processes ◽

Sample Treatment ◽

Extrusion Dies ◽

Wear And Corrosion ◽

Boride Coatings ◽

Wear And Corrosion Resistance

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.

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