Corrosion of 50%(Ni-22%Cr-10%Al-1%Y)-50%(ZrO2-8%Y2O3) Coatings in Na2SO4 and 75%NaCl-25%Na2SO4 Salts

Dong Bok Lee

doi:10.4028/www.scientific.net/AMR.1120-1121.707

Paper Titles

Ablation Property of the Plasma Sprayed NiCrAlY-ZrO₂Compound Coating on Stainless Steel Material
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Research of Microstructure and Hardness of Co55 and W Coating Made by Laser Cladding
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Experimental Study of Nano-Al₂O₃ Particles Reinforced Fe-Based Composite Coating Made by Laser Cladding
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The Effect of Graphite Content on the Wear Behavior of Ni/WC/G Composite Coating
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Corrosion of 50%(Ni-22%Cr-10%Al-1%Y)-50%(ZrO₂-8%Y₂O₃) Coatings in Na₂SO₄ and 75%NaCl-25%Na₂SO₄ Salts
p.707

Research of Rust Layer Stabilization on Bare Steel
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Study on Microstructure of the Matrix/Dense Inner Layer Interface in Micro-Arc Oxidizing on Magnesium Alloys
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Influence of Oxidation Temperature on the High-Temperature Oxide Film Forming Behavior of T22 Heat-Exchange Tubes
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Influence of Passivation Coatings Synthesized by Atomic Layer Deposition on Li-Ion Batteries Cathode Cycle Life
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Corrosion of 50%(Ni-22%Cr-10%Al-1%Y)-50%(ZrO₂-8%Y₂O₃) Coatings in Na₂SO₄ and 75%NaCl-25%Na₂SO₄ Salts

Abstract:

The composite coating that consisted of 50%(Ni-22%Cr-10%Al-1%Y) and 50%(ZrO₂-8%Y₂O₃) was fabricated by air plasma spraying, and corroded at 800 and 900°C for 50 h in Na₂SO₄ or 75%NaCl-25%Na₂SO₄ salt. The scales consisted primarily of Cr₂O₃, NiO and α-Al₂O₃. However, most of them continuously dissolved off as complex ions into the salt during hot corrosion.