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| Home > Publications database > Effects of Feedstock Decomposition and Evaporation on the Composition of Suspension Plasma-Sprayed Coatings |
| Journal Article | FZJ-2015-01449 |
; ; ; ;
2015
Springer
Boston, Mass.
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Please use a persistent id in citations: doi:10.1007/s11666-015-0250-2
Abstract: Emerging new applications and growing demands of plasma-sprayed coatings have initiated the development of new plasma spray processes. One of them is suspension plasma spraying (SPS). The use of liquid feedstock such as suspensions yields higher flexibility compared to the conventional atmospheric plasma spray processes (APS) as even submicron- to nano-sized particles can be processed. This allows, e.g., achieving porous segmented or columnar-structured TBCs or thin and dense coatings for gas separation membranes. To exploit the potentials of such novel plasma spray processes, the plasma-feedstock interaction must be understood better.In this study, decomposition and evaporation of feedstock material during spraying were investigated, since particular difficulties can occur with respect to stoichiometry and phase composition of the deposits. Plasma conditions of SPS were analyzed by optical emission spectroscopy (OES). Experimental results are given, namely for gadolinium zirconate (GZO) and for lanthanum strontium cobalt ferrite (LSCF) deposition by SPS. Moreover, the applied OES approach is validated by comparison with the simpler actinometry method.
Keyword(s): Energy (1st) ; Materials Science (2nd)
; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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