Title of article
Micro-crystalline Fe–Cr–Ni–Al–Y2O3 ODS alloy coatings produced by high frequency electric-spark deposition
Author/Authors
He، نويسنده , , Y and Pang، نويسنده , , H and Qi، نويسنده , , H and Wang، نويسنده , , D and Li، نويسنده , , Z and Gao، نويسنده , , W، نويسنده ,
Pages
8
From page
179
To page
186
Abstract
Fe–Cr–Ni–Al–Y2O3 oxide dispersion strengthened (ODS) alloy coatings were deposited on the surface of 1Cr18Ni9Ti stainless steel by using high-frequency electric-spark technique. The composition of these ODS coatings was determined by the interaction between the electrode material MA956 ODS alloy and the substrate alloy. These ODS coatings possess micro- or nano-crystalline structure with metallurgical bonding to the substrates. The microstructures of the dispersed oxide particles were observed by TEM. High-temperature oxidation was performed in air at 1000 °C. Results indicated that the selective oxidation of Cr was greatly promoted and the scale spallation resistance was significantly improved. The synergistic effects of micro-crystallization and dispersed Y2O3 particles on the oxidation behaviors have been discussed.
Keywords
ODS alloy coatings , Micro-crystallization , High-frequency electric-spark deposition , High-temperature oxidation
Journal title
Astroparticle Physics
Record number
2061421
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