2010
DOI: 10.1016/j.jallcom.2010.06.110
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Microstructural stability of zirconia–alumina composite coatings during hot corrosion test at 1050°C

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Cited by 66 publications
(18 citation statements)
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“…The main disadvantage of TBCs is the decohesion from the bond coat which is caused by oxidation and formation of thermally grown oxide (TGO) or infiltration of detrimental factors such as vanadium salts, which results in phase transformation and spalling upon thermal cycling, and high temperature oxidation [6][7][8][9]. In recent years composite layer of (Al 2 O 3 /YSZ) coatings have been proposed to improve TBC performance [10,11]. In such coatings, due to the existence of the Al 2 O 3 layer, the infiltration of oxygen or other detrimental species is prevented and the formations of TGO and zirconia phase transformation are retarded.…”
Section: Introductionmentioning
confidence: 99%
“…The main disadvantage of TBCs is the decohesion from the bond coat which is caused by oxidation and formation of thermally grown oxide (TGO) or infiltration of detrimental factors such as vanadium salts, which results in phase transformation and spalling upon thermal cycling, and high temperature oxidation [6][7][8][9]. In recent years composite layer of (Al 2 O 3 /YSZ) coatings have been proposed to improve TBC performance [10,11]. In such coatings, due to the existence of the Al 2 O 3 layer, the infiltration of oxygen or other detrimental species is prevented and the formations of TGO and zirconia phase transformation are retarded.…”
Section: Introductionmentioning
confidence: 99%
“…But the poor wear and corrosion resistances of magnesium and its alloy restricted their large-scale applications in industries [3,4]. This makes protective surface treatments an essential part of the manufacturing process for further application of magnesium alloys, which can provide a way of allowing the excellent properties of the substrate material to be maintained while protecting them against wear or corrosion [5][6][7][8][9][10].…”
Section: Introductionmentioning
confidence: 99%
“…Pure Na2SO4 does not directly react with YSZ layer in a TBC although its infiltration into pores and cracks may eventually cause thermo-mechanical damage [46]. There has been considerable research on the corrosion behavior in thermal barrier coatings either in the presence of Na2SO4 and V2O5 or only V2O5 [19,[47][48][49][50][51][52][53][54]. The tests reported in the literature have been conducted from 700 o C to about 1050 o C using different salt concentrations, with a majority of the tests focused on YSZ thermal barrier coatings.…”
Section: Hot Corrosion Tests -Failure Mechanismsmentioning
confidence: 99%
“…The tests reported in the literature have been conducted from 700 o C to about 1050 o C using different salt concentrations, with a majority of the tests focused on YSZ thermal barrier coatings. Limited research on the corrosion mechanism of other top coat materials such as gadolinium zirconate [48,49,55], ceria-stabilized zirconia [56][57][58], titaniastabilized zirconia [58], scandia and yttria co-stabilized zirconia [59] and zirconia-alumina [54] have been reported as well.…”
Section: Hot Corrosion Tests -Failure Mechanismsmentioning
confidence: 99%