The Effects of Reactive Element Oxide Coatings on the Oxidation Behaviour of Metals and Alloys at High Temperatures

Moon, D. P.; Bennett, M. J.

doi:10.4028/www.scientific.net/msf.43.269

Cited by 101 publications

(35 citation statements)

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“…One of the many applications of the sol-gel technique is coating composed of elements having a high affinity to oxygen for the protection of metallic substrates against high temperature corrosion [3,4]. The major advantage of the sol-gel route is the extremely small crystallite size in coating which, as will be shown later, is a crucial factor for this application.…”

Section: Introductionmentioning

confidence: 98%

The nanocrystalline ceria sol-Gel coatings for high temperature applications

Czerwiński

Szpunar

1997

J Sol-Gel Sci Technol

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Abstract. Sol-gel technology was utilized to produce nanocrystalline thin films of CeO2 on substrates with different oxidation resistance at high temperatures. After deposition, the coatings were composed of CeOz crystallites with a size of 5 nm, randomly oriented on all the substrates. The annealing of gel deposited on Pt and Si substrates was accompanied by evaporation of water and other species and followed by growth of crystallites, without formation of any evident texture. Conversely, the annealing of coatings deposited on easy oxidizing substrates of Ni, Cr, or Ni-Cr alloys resulted in incorporation of CeO2 crystallites into growing native oxide, and in slowing the oxidation rate. Examples of the application of CeOz ceramics as coatings deposited on selected metals and alloys for improving their oxidation performance are presented.

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Section: Introductionmentioning

confidence: 98%

The nanocrystalline ceria sol-Gel coatings for high temperature applications

Czerwiński

Szpunar

1997

J Sol-Gel Sci Technol

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“…However, this phenomenon is more pronounced in the presence of coating for which scale pegging to the alloy substrate became favourable for the coated steel. (3) The scale growth machanismhas changed from outward cation migration to predominantly inward oxygen transport in the presence of coating.…”

Section: X-ray Diffraction Analysesmentioning

confidence: 99%

“…Thegeneral aspects of the reactive element effect have been addressed in a recent review by Jedlinski.4) Jedlinski4) has classified them into the four following groups: (1) favouring early formation of protective chromia or alumina scales; (2) overall reduction of the oxidation rate; (3) improving the scale resistante to failure; (4) better cohesion between the growing scale and and 5(b), respectively. Similar investigation on the coated oxidized sample revealed a morphology as presented in Fig.…”

Section: Introductionmentioning

confidence: 99%

Improved High Temperature Oxidation Behaviour of AISI 347 Grade Stainless Steel by Superficial Coating of CeO2.

Roy¹,

Bottino²,

Rakesh³

et al. 1995

ISIJ International

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“…Reactive elements may be introduced into the alloy as alloying elements [16,17,19] or in the form of oxides [18,20,21]. Also ion implantation is employed for this purpose [28].…”

Section: Introductionmentioning

confidence: 99%

“…The required RE concentration in the scale depends on several factors such as the chemical composition of the alloy, the amount and kind of impurities (e.g., sulfur) the latter contains, the kind of reactive element and the oxidation conditions (temperature, time, environment). The optimum RE content has been the subject of intensive research conducted in many laboratories [14][15][16][17][18][19][20][21][22]. According to some authors, the scale acquires the best protective properties in the presence of 10 -4 -10 -1 wt% of RE [23].…”

Section: Introductionmentioning

confidence: 99%

High-temperature oxidation of FeCrAl alloy with alumina–silica–ceria coatings deposited by sol–gel method

Chęcmanowski

Matraszek

Szczygieł

et al. 2013

J Therm Anal Calorim

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One-layer protective coatings made up of SiO 2 -Al 2 O 3 or SiO 2 -Al 2 O 3 -CeO 2 oxides were synthesized on a FeCrAl alloy substrate by the sol-gel method from sols containing tetraethyl orthosilicate, aluminum tri-secbutoxide and cerium(III) 2,4-pentanedionate as the precursors. Coating solutions with the Si:Al:Ce molar ratio of 3:1:0, 3:1:0.1; 3:1:0.01, and 3:1:0.001 were used. The composition and morphology of the obtained gels were examined by TG/DSC, XRD, and SEM techniques. It was found that a small addition of cerium affected the morphology of the forming coatings and improved the FeCrAl alloy resistance to high-temperature oxidation (in air at T = 900°C for t = 100 h). The oxidation of all the investigated samples conformed to the parabolic rate. The protection effectiveness of the one-layer coatings after 100 h of high-temperature oxidation was as high as 70 %.

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The Effects of Reactive Element Oxide Coatings on the Oxidation Behaviour of Metals and Alloys at High Temperatures

Cited by 101 publications

References 0 publications

The nanocrystalline ceria sol-Gel coatings for high temperature applications

The nanocrystalline ceria sol-Gel coatings for high temperature applications

Improved High Temperature Oxidation Behaviour of AISI 347 Grade Stainless Steel by Superficial Coating of CeO2.

High-temperature oxidation of FeCrAl alloy with alumina–silica–ceria coatings deposited by sol–gel method

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