Effect of Preliminary Irradiation of 321 Steel Substrates with High-Intense Pulsed Ion Beams on Scratch Test Results of Subsequently Deposited AlN Coatings

Vladislav Tarbokov,Gennady Remnev,Mikhail Slobodyan,Vladimir Uglov,Egor Smolyanskiy,Sergey Pavlov

doi:10.3390/coatings11101169

Abstract

The paper presents the effect of irradiation of 321 steel substrates with a high-intense pulsed ion beam (HIPIB) on changes in functional properties of the surface layers and tribological characteristics of AlN coatings subsequently deposited above by the reactive magnetron sputtering method. The morphology of the modified surface layers, their microhardness and free surface energy levels are presented for different HIPIB energy densities. HIPIB irradiation of the substrates caused variations in the results of scratch tests combined with the acoustic emission signal processing. Their analysis has enabled concluding that the crack initiation threshold could be at least doubled for the studied coating/substrate system due to preliminary HIPIB irradiation. Finally, the obtained data were discussed, and future research directions were proposed.

Highlights

Ceramic coatings are widely deposited on substrates from metals, alloys and steels for various applications [1,2,3,4,5,6,7,8,9,10]
It should be noted that morphology and other characteristics of the substrate surface layers have a significant effect on the obtained results [21,56,57]
Matching in magnitude and sign of stresses in types of coatings and deposition methods. The aim of these studies has been their partial filling in relation to tribological characteristics of the AlN coatings deposited on the 321 steel substrates, including preliminary high-intense pulsed ion beam (HIPIB) irradiated ones, by the reactive magnetron sputtering procedure

Summary

Introduction

Ceramic coatings are widely deposited on substrates from metals, alloys and steels for various applications [1,2,3,4,5,6,7,8,9,10]. One of the effective ways to modify the surface layers of metals, alloys and steels is irradiation with a high-intense pulsed ion beam (HIPIB). In this case, a surface is cleaned, a specific microrelief is formed, and the microstructure and phase composition of a material is changed [68,69,70,71,72,73,74,75,76,77,78,79,80]. Dependences of residual stresses in trial coatings on silicon substrates were initially assessed

Methods

Results

Discussion

Conclusion