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  11. Contactless Health Monitoring In Autonomous Self-reporting Ceramic Coatings

Contactless health monitoring in autonomous self-reporting ceramic coatings

Peter J Pöllmann1, Sebastian Lellig1,2, Dimitri Bogdanovski1

  • 1Materials Chemistry, RWTH Aachen University, Aachen, Germany. poellmann@mch.rwth-aachen.de.

Nanoscale
|February 19, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces contactless electrical resistance tracking for monitoring material health in Cr-Al-B coatings. This innovation allows for real-time assessment of structural changes and remaining component lifetime without physical connections.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Engineering

Background:

  • Monitoring structural changes in coated components is crucial for assessing material health and predicting remaining lifetime.
  • Existing electrical resistance tracking methods require physical connections, limiting their application in autonomous systems.
  • Autonomous self-reporting coatings offer potential for real-time material health monitoring.

Purpose of the Study:

  • To demonstrate the proof of concept for contactless tracking of phase transformations in autonomous self-reporting chromium-aluminum-boron (Cr-Al-B) coatings.
  • To reveal the potential of contactless electrical resistance data for assessing material health by tracking structural changes.

Main Methods:

  • Contactless monitoring of electrical resistance changes in glassy Cr0.34Al0.31B0.35 coatings.

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  • In situ high-resolution scanning transmission electron microscopy (HR-STEM) and selected area electron diffraction (SAED).
  • Ex situ X-ray diffraction (XRD) and elastic-recoil detection analysis (ERDA).

    • Main Results:

    • Contactless electrical resistance measurements successfully revealed crystallization, phase formation, and grain growth of Cr3AlB4 and Cr2AlB2.
    • Correlation established between electrical resistance changes and microstructural evolution.
    • Demonstrated the feasibility of using contactless resistance data for material health assessment.

    Conclusions:

    • Contactless electrical resistance tracking is a viable method for monitoring structural changes in Cr-Al-B coatings.
    • This technique enables autonomous self-reporting of material health, paving the way for more efficient and sustainable material service.
    • Utilizing individual remaining component lifetime based on real-time data can replace traditional safety factor-based design approaches.