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Film/coating formation growth

Implantations of yttrium and cerium in 15 % Cr/4% A1 steel and aluminized coatings on nickel-based alloys did not improve the high-temperature oxidation resistance even though conventional yttrium alloy addition had an effect. The differences for the various substrates are attributed to different mechanisms of oxidation of the materials. The austenitic steel forms a protective oxide film and the oxidation proceeds by cation diffusion. Thus, the yttrium is able to remain in a position at the oxide/metal interface. The other materials exhibit oxides based on aluminum. In their growth anion diffusion is involved which means an oxide formation directly at the oxide/metal interface. The implanted metals may, therefore, be incorporated into the oxide and lost by oxide spalling. [Pg.69]

See other pages where Film/coating formation growth is mentioned: [Pg.79]    [Pg.662]    [Pg.662]    [Pg.125]    [Pg.307]    [Pg.484]    [Pg.386]    [Pg.159]    [Pg.2124]    [Pg.295]    [Pg.252]    [Pg.167]    [Pg.687]    [Pg.289]    [Pg.211]    [Pg.208]    [Pg.690]    [Pg.43]    [Pg.155]    [Pg.155]    [Pg.111]    [Pg.56]    [Pg.75]    [Pg.152]    [Pg.95]    [Pg.210]    [Pg.511]    [Pg.170]    [Pg.294]    [Pg.131]    [Pg.157]    [Pg.142]    [Pg.38]    [Pg.280]    [Pg.107]    [Pg.152]    [Pg.69]    [Pg.158]    [Pg.411]    [Pg.477]    [Pg.1376]    [Pg.4750]    [Pg.383]    [Pg.391]    [Pg.186]    [Pg.529]    [Pg.1319]    [Pg.231]    [Pg.68]    [Pg.481]   
See also in sourсe #XX -- [ Pg.336 ]



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Coating formation

Film coating

Film format

Film formation

Film growth

Film/coating formation

Growth formation

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