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Contactless Tracking of Decomposition in Self‐Reporting Ceramic Cr‐Al‐B Coatings
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Contactless Tracking of Decomposition in Self‐Reporting Ceramic Cr‐Al‐B Coatings
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Journal Article
Contactless Tracking of Decomposition in Self‐Reporting Ceramic Cr‐Al‐B Coatings
2025
Overview
Autonomous health tracking of coated components via electrical resistance measurements requires physical connections between coating and readout. Here, the proof of concept for contactless tracking of decomposition in autonomous self‐reporting Cr‐Al‐B coatings is demonstrated. Contactless‐monitored electrical resistance changes of Cr0.34Al0.31B0.35 coatings reveal decomposition of Cr2AlB2 and Cr3AlB4 to CrB and CrB2. Comparison of contactless‐measured resistance data with in situ and ex situ high‐resolution scanning transmission electron microscopy, as well as ex situ X‐ray diffraction and elastic‐recoil detection analysis, reveals the untapped potential of assessing materials health data in extreme environments. More sustainable materials consumption is enabled by continuous or periodic contactless tracking of materials health data as the individual remaining component lifetime is utilized instead of the much shorter lifetime prediction resulting from safety‐factor‐based design approaches. Proof of concept for contactless tracking of decomposition in self‐reporting ceramic Cr‐Al‐B coatings in extreme environments by contactless resistivity measurements is demonstrated. To verify the results, high resolution in situ and ex situ methods are employed. A more sustainable resource usage is enabled by the contactless tracking of materials health data.
Publisher
John Wiley & Sons, Inc,Wiley-VCH
