Abstract—

Two-dimensional and four-dimensional reinforced carbon–carbon composite materials based on carbon structural filament are prepared via the isostatic carbonization of a coal tar pitch. The difference between the crystalline state of a reinforcing fiber and a coke matrix is assessed with X-ray diffraction analysis. A change in the level of the surface resistivity depending on the density of the samples and the degree of graphitization of a matrix is studied with eddy-current testing. We show that the degree of completion of formation of the internal structure influences the mechanical strength and the level of specific electrical resistance of the material. Measurement of the electrical resistivity with eddy-current testing appears to be a non-destructive method to assess changes in the structure of the material.

中文翻译：

---

等静压碳化技术获得的碳-碳复合材料的表面电阻率

摘要—

通过碳焦油沥青的等静压碳化制备基于碳结构细丝的二维和二维增强碳-碳复合材料。用X射线衍射分析评估增强纤维和焦炭基质的结晶状态之间的差异。通过涡流测试研究了表面电阻率水平随样品密度和基体石墨化程度的变化。我们表明内部结构形成的完成程度会影响材料的机械强度和比电阻水平。用涡流测试测量电阻率似乎是评估材料结构变化的一种非破坏性方法。