ISSN:
1436-5073
Keywords:
high temperature corrosion
;
coatings
;
laboratory and operation tests
;
method “integral layer profile analysis” with EDX-/WDX-systems
;
materials characterization up to 900° C
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract In our former investigations, the phenomenon high temperature corrosion (HTC) was described exemplarily on selected materialcoating combinations for blades of stationary gas turbines, mainly in the temperature region of up to 750° C. To answer the question, in which manner higher gas inlet and/or higher material surface temperature would influence the HTC behaviour, a special analytical technique—the “integral layer profile analysis”—was introduced to ameliorate concentration profile methods. By examining IN 738 LC specimens with CoCrAlY plasma spray coating, stressed by hot gas at 900° C, the limits of this system are shown by explaining the corrosion mechanism; the method is also used for other systems, e.g. U 520 with NiCrAlY coating at 750° C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01199479
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