Abstract—

TiC + xC composites comprising titanium carbide particles, unreacted carbon black particles, and a graphite nanofilm have been prepared by self-propagating high-temperature synthesis pressing. The fused titanium carbide particles form a robust skeleton, whose voids contain carbon black particles separated from the titanium carbide particles by the graphite nanofilm. We have examined the effect of composition and temperature on the resistivity of the TiC + xC composites. The resistivity of the composites has been shown to increase with increasing carbon content. In the temperature range 300–1300 K, the temperature coefficient of resistivity (TCR) of the TiC + 0.25C, TiC + 0.5C, and TiC + 0.75C composites is 8.9 × 10^–4, 9.5 × 10^–4, and 9.7 × 10^–4 K^–1, respectively. In the temperature range 1000–1010 K, the resistivity of the composites remains constant as a result of the ordering of the carbon sublattice in TiC.

中文翻译：

---

TiC + x C复合材料的自蔓延高温合成

摘要-

通过自蔓延高温合成压制，制备了包含碳化钛颗粒，未反应的炭黑颗粒和石墨纳米膜的TiC + x C复合材料。熔融的碳化钛颗粒形成坚固的骨架，其空隙包含通过石墨纳米膜与碳化钛颗粒分离的炭黑颗粒。我们已经检查了组成和温度对TiC + x C复合材料电阻率的影响。已经表明，复合材料的电阻率随碳含量的增加而增加。的温度范围内300-1300 K，电阻率的温度系数的TiC + 0.25C的（TCR），的TiC + 0.5C，和TiC + 0.75C复合材料为8.9×10 ^-4，9.5×10 ^-4和9.7×10 ^–4 K ^–1。在1000–1010 K的温度范围内，由于TiC中碳亚晶格的有序化，复合材料的电阻率保持恒定。