Performance of Cr oxide coatings on 304 steel against metal dusting

L. Melo-Máximo; O. Salas; D. Melo-Máximo; J. Oseguera; V. M. López-Hirata; R. D. Torres; C. M. Lepienski; R. M. de Souza

doi:10.1016/j.surfcoat.2013.08.038

Performance of Cr oxide coatings on 304 steel against metal dusting

L. Melo-Máximo, O. Salas, D. Melo-Máximo, J. Oseguera, V. M. López-Hirata, R. D. Torres, C. M. Lepienski, R. M. de Souza

Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE)

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The response to metal dusting of Cr/Cr₂O₃ thin films deposited on 304L stainless steel substrates by reactive magnetron sputtering (RMS) under various deposition conditions was investigated. Selected coated samples and bare substrates were exposed to an atmosphere of CH₄+H₂+residual oxygen at 800°C for up to 20h via thermogravimetric analysis (TGA). The results indicate that the presence of the Cr/Cr oxide film resulted in a clear improvement in resistance against metal dusting of the 304L steel. The protective behavior of the Cr/Cr oxide coatings arises from several effects: decrease of catalytic deposition of carbon on the Cr oxide surface (and expected prevention of inward diffusion of carbon through the Cr oxide), and hindrance of outward Cr and Fe diffusion which were identified as important events in the metal dusting of the bare 304L steel. The structural differences among the various Cr/Cr oxide films prepared in the present conditions played a lesser role in their protective behavior than the presence of the outer Cr oxide layer.

Original language	English
Pages (from-to)	39-50
Number of pages	12
Journal	Surface and Coatings Technology
Volume	237
DOIs	https://doi.org/10.1016/j.surfcoat.2013.08.038
State	Published - 25 Dec 2013

Keywords

304L steel
Metal dusting
Protective thin films
Reactive magnetron sputtering

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10.1016/j.surfcoat.2013.08.038

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title = "Performance of Cr oxide coatings on 304 steel against metal dusting",

abstract = "The response to metal dusting of Cr/Cr2O3 thin films deposited on 304L stainless steel substrates by reactive magnetron sputtering (RMS) under various deposition conditions was investigated. Selected coated samples and bare substrates were exposed to an atmosphere of CH4+H2+residual oxygen at 800°C for up to 20h via thermogravimetric analysis (TGA). The results indicate that the presence of the Cr/Cr oxide film resulted in a clear improvement in resistance against metal dusting of the 304L steel. The protective behavior of the Cr/Cr oxide coatings arises from several effects: decrease of catalytic deposition of carbon on the Cr oxide surface (and expected prevention of inward diffusion of carbon through the Cr oxide), and hindrance of outward Cr and Fe diffusion which were identified as important events in the metal dusting of the bare 304L steel. The structural differences among the various Cr/Cr oxide films prepared in the present conditions played a lesser role in their protective behavior than the presence of the outer Cr oxide layer.",

keywords = "304L steel, Metal dusting, Protective thin films, Reactive magnetron sputtering",

author = "L. Melo-M{\'a}ximo and O. Salas and D. Melo-M{\'a}ximo and J. Oseguera and L{\'o}pez-Hirata, {V. M.} and Torres, {R. D.} and Lepienski, {C. M.} and {de Souza}, {R. M.}",

year = "2013",

month = dec,

day = "25",

doi = "10.1016/j.surfcoat.2013.08.038",

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volume = "237",

pages = "39--50",

journal = "Surface and Coatings Technology",

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TY - JOUR

T1 - Performance of Cr oxide coatings on 304 steel against metal dusting

AU - Melo-Máximo, L.

AU - Salas, O.

AU - Melo-Máximo, D.

AU - Oseguera, J.

AU - López-Hirata, V. M.

AU - Torres, R. D.

AU - Lepienski, C. M.

AU - de Souza, R. M.

PY - 2013/12/25

Y1 - 2013/12/25

N2 - The response to metal dusting of Cr/Cr2O3 thin films deposited on 304L stainless steel substrates by reactive magnetron sputtering (RMS) under various deposition conditions was investigated. Selected coated samples and bare substrates were exposed to an atmosphere of CH4+H2+residual oxygen at 800°C for up to 20h via thermogravimetric analysis (TGA). The results indicate that the presence of the Cr/Cr oxide film resulted in a clear improvement in resistance against metal dusting of the 304L steel. The protective behavior of the Cr/Cr oxide coatings arises from several effects: decrease of catalytic deposition of carbon on the Cr oxide surface (and expected prevention of inward diffusion of carbon through the Cr oxide), and hindrance of outward Cr and Fe diffusion which were identified as important events in the metal dusting of the bare 304L steel. The structural differences among the various Cr/Cr oxide films prepared in the present conditions played a lesser role in their protective behavior than the presence of the outer Cr oxide layer.

AB - The response to metal dusting of Cr/Cr2O3 thin films deposited on 304L stainless steel substrates by reactive magnetron sputtering (RMS) under various deposition conditions was investigated. Selected coated samples and bare substrates were exposed to an atmosphere of CH4+H2+residual oxygen at 800°C for up to 20h via thermogravimetric analysis (TGA). The results indicate that the presence of the Cr/Cr oxide film resulted in a clear improvement in resistance against metal dusting of the 304L steel. The protective behavior of the Cr/Cr oxide coatings arises from several effects: decrease of catalytic deposition of carbon on the Cr oxide surface (and expected prevention of inward diffusion of carbon through the Cr oxide), and hindrance of outward Cr and Fe diffusion which were identified as important events in the metal dusting of the bare 304L steel. The structural differences among the various Cr/Cr oxide films prepared in the present conditions played a lesser role in their protective behavior than the presence of the outer Cr oxide layer.

KW - 304L steel

KW - Metal dusting

KW - Protective thin films

KW - Reactive magnetron sputtering

UR - http://www.scopus.com/inward/record.url?scp=84889091917&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2013.08.038

DO - 10.1016/j.surfcoat.2013.08.038

M3 - Artículo

SN - 0257-8972

VL - 237

SP - 39

EP - 50

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Performance of Cr oxide coatings on 304 steel against metal dusting

Abstract

Keywords

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