An investigation of a CoNiCrAlY overlay coating and its oxidation behavior by means of imaging SIMS
| ISSN: |
1573-4889
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| Keywords: |
coatings ; reactive elements ; adhesion ; growth mechanisms ; hot corrosion ; SIMS
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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| Notes: |
Abstract A CoNiCrAlY overlay coating and its oxidation behavior have been studied by means of imaging SIMS. Maps of the coating and scale showed a highly uneven yttrium distribution which arose at least partly during the deposition of the coating. The implications of this for the resistance of the coating to oxidation and hot corrosion are discussed. There was no evidence of yttrium build-up at the scale/metal interface. The yttrium maps show the power of imaging SIMS for studying the distribution of elements which are present in very low concentrations. A preliminary experiment using18O− as a tracer showed that the scale grew primarily at the scale/metal interface.
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| Type of Medium: |
Electronic Resource
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| URL: |