2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 6: Coatings, Cement, Rare Earth & Ferro-alloys
| Editors: | Kongoli F, Yildirim H, Hainer S, Hofmann K, Proske T, Graubner C.A., Albert B |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 200 pages |
| ISBN: | 978-1-987820-29-4 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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The Role of Nitrided Layer in the Properties of the Coating/Substrate Systems
Jerzy Ratajski1; Adam Gilewicz2; Stanislaw Mitura2;1KOSZALIN UNIVERSITY OF KOSZALIN, Koszalin, Poland; 2KOSZALIN UNIVERSITY OF TECHNOLOGY, Koszalin, Poland;
Type of Paper: Regular
Id Paper: 339
Topic: 19
Abstract:
The article describes the role of the nitrided layer in the properties of the coating /substrate systems. In the present study, samples made of AISI 4140 steel pre-treated with gas nitriding and coated with different PVD coatings (multi-module CrN/CrCN coatings and gradient CrN/CrCN coatings) were investigated in terms of adhesion and wear resistance. To examine the influence of the nitrided layer on the performance of the coating's substrate composite, coatings were deposited on not nitrided and on nitrided samples, prepared under different nitriding conditions.
Particular on the basis of studies, It was showed that the effect of nitriding process cannot be reduced only to increase the hardness of the substrate, ie., to reduce the differences in hardness between the coating and the substrate. As indicated, the nitrided layer, which is characterized by a gradient of hardness and Young's modulus PVD coating reduces brittleness observed in the study of Daimler-Benz.