Abstract Electrical property of joints made with polymer-derived silicoaluminum carbonitride (SiAlCN) ceramics was investigated. SiAlCN ceramics were successfully joined using polycarbosilane precursor as joining medium at 1123 K and 250 kPa. The maximum tensile strength of obtained joints reached ~3 MPa, meeting strength requirement of sensor fabrication. DC and AC conductivity of joints were measured in temperature range of 373–823 K, and were shown to follow band tail hopping mechanism. Conductive behavior of joints was evaluated via comparison with free SiAlCN ceramics. Unique amorphous structures of SiAlCN substrate and joining layer played important role in overall electrical properties. Therefore, the prepared joints presented practical application in high-temperature sensors based on polymer-derived ceramics.

中文翻译：

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聚合物衍生的 SiAlCN 陶瓷通过粘合剂连接制成的接头的电性能

摘要 研究了聚合物衍生的碳氮化硅铝（SiAlCN）陶瓷接头的电性能。使用聚碳硅烷前体作为接合介质在 1123 K 和 250 kPa 下成功接合 SiAlCN 陶瓷。获得的接头的最大拉伸强度达到~3 MPa，满足传感器制造的强度要求。在 373-823 K 的温度范围内测量了接头的 DC 和 AC 电导率，并显示出遵循带尾跳跃机制。通过与游离 SiAlCN 陶瓷的比较来评估接头的导电性能。SiAlCN 衬底和连接层的独特非晶结构对整体电学性能起着重要作用。因此，所制备的接头在基于聚合物衍生陶瓷的高温传感器中具有实际应用价值。