Home Archive News Contact
PDF download
Cite article
Share options
Informations, rights and permissions
Issue image
Vol 11, Issue 1, 2016
Pages: 116 - 124
Research article
Metallic materials
See full issue

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Metrics and citations
Abstract views: 34
PDF Downloads: 26
Google scholar: See link
Article content
  1. Abstract
  2. Disclaimer
Published: 21.04.2016. Research article Metallic materials

DEPOSITION OF Al THIN FILM ON FeCrAl ALLOY AND CONTINUOUS ELECTRICAL RESISTANCE MEASUREMENT

By
Stojana Vesković ,
Stojana Vesković
Contact Stojana Vesković

Hidria AET d.o.o, Hidria AET d.o.o , Ljubljana , Slovenia

Janez Kovač ,
Janez Kovač

LABORATORIJ ZA ANALIZO POVRŠIN IN TANKIH PLASTI (LAPTP) , IJS , Ljubljana , Slovenia

Peter Panjan ,
Peter Panjan

Jožef Stefan Institute, IJS , Ljubljana , Slovenia

Damjan Klobčar ,
Damjan Klobčar

Faculty of Mechanical Engineering, University of Ljubljana , Ljubljana , Slovenia

Milan Bizjak ,
Milan Bizjak

Faculty of Natural Sciences and Engineering, University of Ljubljana , Ljubljana , Slovenia

Blaž Karpe
Blaž Karpe

Faculty of Natural Sciences and Engineering , University of Ljubljana , Ljubljana , Slovenia

Abstract

FeCrAl alloys are used in a wide range of resistance and high-temperature applications such as wire 
heaters, furnace structure parts, etc. Their oxidation resistance at elevated temperatures relies on the 
formation of a thin and a continuous Al2O3 layer on the alloy surface. Growth and thickness of the 
protective Al2O3 layer depends on Al content in the alloy, especially in the surface layer, where must 
exceed a critical concentration level. However, such protection is limited when the part is frequently 
exposed to thermal shocks, due to cracking of the protective layer and further oxidation of the Al 
depleted surface of the alloy. One of possible ways to improve high temperature oxidation resistance 
of FeCrAl alloy is to increase the Al concentration in the surface layer by physical vapour deposition 
(PVD) followed by proper heat treatment to produce the Al diffusion layer. Changes in thin films were
studied by electron microscopy (SEM) and in-situ electrical resistivity measurement during heating at 
5°C/min in argon gas at atmospheric pressure. After thermal treatment, oxidation tests at 1200 °C for 
24h in air were conducted. 

References

1.
I. G, S. W, D. N, W Q. J.: Factors governing breakaway oxidation of FeCrAl-based alloys. Materials and Corrosion. 2000;51:224-235 ,.
2.
Pilone D. Ferritic Stainless Steel for High Temperature Applications in Oxidizing environments. Recent Patents on Material Science. 2009;2:27-31 ,.
3.
S. O, Ch. S, G. S, Ch. W, Rafaja. D.: Formation of periodic pattern in the (Ni, W)/Al diffusion couples. Surface and Coating Technology. 2010;204:2307-2315 ,.
4.
J. BM, R. NJ, J. SN, D. N, J. QW, V. K, et al. Lifetime extension of FeCrAlRE alloys in air: Potential roles of an enhanced Al-reservoir and surface pretreatment. Materials and Corrosion. 2005;56(ue 12):854-866 ,.
5.
A. C, P. P, B. N, A. Z, M. B, L T. Thin Solid Films. 1995;270:367-370 2 ,.
6.
Čekada M PP. Zaščita orodij s trdimi PVD prevlekami. 2005.
7.
8.
M. B, A. C, G. D, L K. Panjan P.: Določitev kinetike sprememb v hitro strjenih zlitinah aluminij - železo na osnovi meritev električne upornosti. Kovine, zlitine, tehnologije. 1997;
9.
M. B, L. K, B. K, A. N, B. K, Pribošek M RJ. Naprava za detekcijo mikrostrukturnih sprememb v kovinskih materialih. Industrijski forum_IRT prispevek. 2011;
10.
A. C, P P. Navinšek B.: Study of Interaction in Ni/Si Thin Films During Heat Treatment on a Basis of the Continuous Electrical Resistivity Measurements. Kovine, zlitine, tehnologije. 1996;30:1-2,.
11.

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.