热区电阻测量用于监控碳化硅和硅基材料的健康状况

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-10-15 DOI:10.1016/j.jeurceramsoc.2024.116985

A. Bident, J. Roger, A. Ebel, F. Rebillat

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引用次数: 0

摘要

碳化硅基材料是高温下结构应用的良好候选材料。然而，由于其损坏耐受性有限，使用电导率测量进行在役健康监测将大有裨益。不过，在这些材料的热区进行电气测量仍然是一项重大挑战，需要设计一种特定的接触材料，以确保测量导线与材料的粘附性，同时限制与基材的化学反应。研究发现，TiSi2-Si 共晶化合物是这一应用的理想候选材料。使用这种接触材料对烧结的碳化硅样品进行了电导率（EC）测量，测量温度在真空中达到 1300 °C。测量后对触点进行了分析，观察到裂纹和碳化硅生长，但对电阻测量没有任何影响。

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Hot zone electrical resistance measurement for health monitoring of SiC and Si-based materials

SiC-based materials are good candidates for structural applications at high temperature. However, due to their limited damage tolerance, in-service health monitoring using electrical conductivity measurements would be beneficial. Still, electrical measurements in hot zones on these materials remain a major challenge and require the design of a specific contact material that ensure adhesion of the measurement wires to the material while limiting chemical reactivity with the substrate. TiSi₂-Si eutectic compound was found to be a good candidate for this application. An electrical conductivity (EC) measurement was carried out up successfully to 1300 °C in vacuum on a sintered SiC sample using this contact material. Post-measurement analysis of the contact was carried out, and cracks and SiC growth were observed, but without any impact on the electrical resistance measurement.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.