Research on aggressiveness of CMAS+NaVO3 mixtures towards thermal barrier coatings from the perspective of physical and chemical characteristics
Source abstract
Abstract
Thermal barrier coatings (TBCs) used in marine condition recently suffer from a new degradation mainly induced by the coupling effect of calcium-magnesium-aluminum-silicate (CMAS) and molten salt . In present study, physical and chemical properties of CMAS+NaVO 3 mixture with varying CMAS/NaVO 3 ratio were examined to determine its aggressiveness towards TBCs. It was found that the crystallization behavior of CMAS was remarkably changed due to NaVO 3 addition. The experimental results also revealed a decreasing melting point and viscosity with increasing NaVO 3 content, indicating an enhanced aggressivity even at a relatively low temperature. More specifically, the Log viscosity values of the melts were found linearly dependent on NaVO 3 content. In addition, theoretical results implied that thermo-chemical damage aroused by CMAS+NaVO 3 mixtures would be potentially mitigated to a certain extent as compared with the case in CMAS corrosion.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Magnesium Oxide Properties and Applications · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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