Phase stability and initial phase high-temperature corrosion behavior of non-stoichiometric lanthanum cerium oxide thermal barrier coatings

Kandasamy, Praveen; Kandala, Bhavani; Lee, Min Wook; Sivakumar, Govindarajan

doi:10.1016/j.ceramint.2024.01.358

Ceramics International

2024

DOI: 10.1016/j.ceramint.2024.01.358

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Phase stability and initial phase high-temperature corrosion behavior of non-stoichiometric lanthanum cerium oxide thermal barrier coatings

Praveen Kandasamy,

Bhavani Kandala,

Min Wook Lee

et al.

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Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt

Ankah,

Gasem

2024

Materials & Corrosion

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The hot corrosion resistance of 8 wt.% yttria‐stabilized zirconia (8YSZ) powder, modified with CaO, MgO, Ta2O5, and TiO2 at concentrations of 5, 10, and 15 wt.%, was systematically investigated in a molten vanadium pentoxide (V2O5) environment at 900°C and 1100°C for 48 h. The modified 8YSZ samples, coated with V2O5, underwent thermal cycling totaling 12 cycles. Results revealed susceptibility to hot corrosion for all doped 8YSZ powders, attributed to tetragonal ZrO2 destabilization, forming monoclinic ZrO2. Remarkably, 8YSZ/CaO demonstrated exceptional resistance to hot corrosion when exposed to a temperature of 900°C. The corrosion product found in the 8YSZ/Ta2O5 material was determined to be tetragonal Zr0.66Y0.17Ta0.17O2. Although, 8YSZ/TiO2 undergoes deterioration at 900°C, it exhibits improved resistance at 1100°C, resulting in the formation of TiVO4.

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Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt

Ankah,

Gasem

2024

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

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Phase stability and initial phase high-temperature corrosion behavior of non-stoichiometric lanthanum cerium oxide thermal barrier coatings

Cited by 1 publication

References 51 publications

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt

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Phase stability and initial phase high-temperature corrosion behavior of non-stoichiometric lanthanum cerium oxide thermal barrier coatings

Cited by 1 publication

References 51 publications

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V2O5 molten salt

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V2O5 molten salt

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Product

Resources

About

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V₂O₅ molten salt