Machines. Technologies. Materials.
Vol. 20 (2026), Issue 1, pg(s) 34-37

MATERIALS

Structure and properties of AlB12-Al detonation coatings on Steel 45

  • 1 Frantsevich Institute for Problems of Materials Science, NAS of Ukraine,
  • 2 Technical Center, NAS of Ukraine
  • 3 3National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Ukraine

Abstract

The work is dedicated to the study of the properties of detonation coatings AlB12-30 wt.% Al (AB70) applied to Steel 45 using the DNEPR-5M installation. The coatings have the following characteristics: thickness h ~ 170-200 μm, Hμ = 27-29 GPa, HV = 4.35 GPa. Changes in the tribological characteristics of the composite depending on the friction mode are analyzed. The AB70 coating is found to have stable tribological characteristics: f = 0.21-0.38, wear rate I = 3.3-8.6 μm/km. Samples with coatings exceed uncoated Steel 45 in wear resistance. Changes in the surface structure after friction depending on the sliding speed and load are shown. Two wear mechanisms – oxidative and adhesive-abrasive – are established. A conclusion was drawn regarding the possibility of using the AlB12-Al system to apply detonation coatings.

Keywords

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