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Oxidation nanocrystalline coatings

The corrosion behavior of sputtered Ni-based superaUoy K38 nanocrystalline coatings in molten sulfate (75 wt.% Na2S04 + 25 wt.% K2SO4) was investigated at 900 °C in air. The results indicated that nanocrystaUization triggers rapid formation of a protective oxide layer. The addition of yttrium to the coating improved its corrosion resistance [38]. [Pg.509]

X. Peng, F. Wang, Oxidation - resistant nanocrystalline coatings. Development in high-... [Pg.238]

F. Wang, S. Geng and S. Zhu (2002), Corrosion behavior of a sputtered K38G nanocrystalline coating with a solid NaCl deposit in wet oxygen at 600 to 700°C , Oxid. Met., 5S-. 185-95. [Pg.84]

High temperature oxidation protection using nanocrystalline coatings... [Pg.146]

That nanocrystalline coatings promote the formation of protective scale is also supported by the indirect but credible results which show the exclusive formation of an external scale of chromia or alumina during various periods of oxidation. " " Otherwise, the less protective oxides would be seen in... [Pg.462]

Cross-sections of the K38G nanocrystalline coatings after 500 h oxidation in air at 1000°C (a) without pre-oxidation treatment ... [Pg.466]

Fifth, the nanocrystalline coating may reduce the detrimental effect of sulphur on oxidation. In the 1980s a theory called the sulphur effect was used to explain all questions regarding scale adhesion and the REE. ... [Pg.468]

Cross-section of NiAl nanocrystalline coating after 100 cycles oxidation in air at 1000°C. (Reprinted from reference [44] with permission from Elsevier.)... [Pg.468]

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Nanocrystalline

Nanocrystalline oxides

Nanocrystallines

Nanocrystallinity

Oxide coating

Oxidic coatings

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