Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature

The aim of the paper was to investigate the air oxidation behaviour of pack aluminised steels exposed at 650 °C for 1000 h in static natural air atmosphere. The pack coatings were doped by rare elements such as gadolinium (Gd), cerium oxide (CeO<sub>2</sub>), and lanthanum (La) in order...

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Autores principales:	Tomasz Dudziak, Ewa Rząd, Tomasz Polczyk, Katrin Jahns, Wojciech Polkowski, Adelajda Polkowska, Michal Wójcicki
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pack cementation oxidation rare elements XRD SEM EDS Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/b9ae7e4ff7d14c749c764babce45ad66
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spelling	oai:doaj.org-article:b9ae7e4ff7d14c749c764babce45ad662021-11-25T18:13:41ZPreliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature10.3390/ma142268011996-1944https://doaj.org/article/b9ae7e4ff7d14c749c764babce45ad662021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6801https://doaj.org/toc/1996-1944The aim of the paper was to investigate the air oxidation behaviour of pack aluminised steels exposed at 650 °C for 1000 h in static natural air atmosphere. The pack coatings were doped by rare elements such as gadolinium (Gd), cerium oxide (CeO<sub>2</sub>), and lanthanum (La) in order to enhance the corrosion resistance and plasticity of the deposited layers. In this work, the following steels were used: 16M, T91, VM12, Super 304H, and finally SANICRO25. The results indicated a much higher corrosion resistance in the coated 16M, T91, and VM12 steels; the steels with a higher Cr content than 16 wt % Cr indicated a better behaviour in the uncoated state than in the coated state. However, the observed difference in mass gain between the uncoated and the coated austenitic steels was not enormous. Furthermore, the addition of RE elements to the coating showed some effect in terms of coating thicknesses and differences in the layer structures. The materials prior to testing and after the exposure were investigated using XRD, the SEM X-ray maps with an EDS instrument were used for particular samples to evaluate the phase identifications, element concentrations, microstructure, and chemical composition.Tomasz DudziakEwa RządTomasz PolczykKatrin JahnsWojciech PolkowskiAdelajda PolkowskaMichal WójcickiMDPI AGarticlepack cementationoxidationrare elementsXRDSEMEDSTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6801, p 6801 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pack cementation oxidation rare elements XRD SEM EDS Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	pack cementation oxidation rare elements XRD SEM EDS Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Tomasz Dudziak Ewa Rząd Tomasz Polczyk Katrin Jahns Wojciech Polkowski Adelajda Polkowska Michal Wójcicki Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
description	The aim of the paper was to investigate the air oxidation behaviour of pack aluminised steels exposed at 650 °C for 1000 h in static natural air atmosphere. The pack coatings were doped by rare elements such as gadolinium (Gd), cerium oxide (CeO<sub>2</sub>), and lanthanum (La) in order to enhance the corrosion resistance and plasticity of the deposited layers. In this work, the following steels were used: 16M, T91, VM12, Super 304H, and finally SANICRO25. The results indicated a much higher corrosion resistance in the coated 16M, T91, and VM12 steels; the steels with a higher Cr content than 16 wt % Cr indicated a better behaviour in the uncoated state than in the coated state. However, the observed difference in mass gain between the uncoated and the coated austenitic steels was not enormous. Furthermore, the addition of RE elements to the coating showed some effect in terms of coating thicknesses and differences in the layer structures. The materials prior to testing and after the exposure were investigated using XRD, the SEM X-ray maps with an EDS instrument were used for particular samples to evaluate the phase identifications, element concentrations, microstructure, and chemical composition.
format	article
author	Tomasz Dudziak Ewa Rząd Tomasz Polczyk Katrin Jahns Wojciech Polkowski Adelajda Polkowska Michal Wójcicki
author_facet	Tomasz Dudziak Ewa Rząd Tomasz Polczyk Katrin Jahns Wojciech Polkowski Adelajda Polkowska Michal Wójcicki
author_sort	Tomasz Dudziak
title	Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
title_short	Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
title_full	Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
title_fullStr	Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
title_full_unstemmed	Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature
title_sort	preliminary studies on rare elements addition and effect on oxidation behaviour of pack cementation coatings deposited on variety of steels at high temperature
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b9ae7e4ff7d14c749c764babce45ad66
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Preliminary Studies on Rare Elements Addition and Effect on Oxidation Behaviour of Pack Cementation Coatings Deposited on Variety of Steels at High Temperature

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