Effect of plunger exposed length on densification uniformity and microstructural evolution of liquid-phase-sintered SiC ceramics during spark plasma sintering

This dataset contains the experimental data supporting the manuscript entitled “Effect of plunger exposed length on densification uniformity and microstructural evolution of liquid-phase-sintered SiC ceramics during spark plasma sintering”. The study investigates the effect of upper plunger exposed length on the electrical response, densification behavior, phase composition, microstructure, and local mechanical properties of liquid-phase-sintered SiC ceramics prepared by spark plasma sintering. The samples S-H15, S-H12, and S-H9 correspond to upper plunger exposed lengths of 15, 12, and 9 mm, respectively. The dataset includes the experimental data used for the analysis of SPS system resistance and displacement behavior, relative density, XRD phase composition, Vickers hardness and fracture toughness, representative indentation crack geometry, grain-size distribution, and EDS line-scan results. These data support the figures, tables, and main conclusions reported in the associated manuscript.本数据集收录了支撑题为《放电等离子烧结（spark plasma sintering，SPS）过程中柱塞外露长度对液相烧结SiC陶瓷致密化均匀性与微观组织演化的影响》的学术手稿的实验数据。本研究探讨了采用放电等离子烧结制备的液相烧结SiC陶瓷的上柱塞外露长度对其电学响应、致密化行为、物相组成、微观结构及局部力学性能的影响。 样品S-H15、S-H12与S-H9分别对应上柱塞外露长度为15 mm、12 mm与9 mm的试样。本数据集包含用于分析SPS系统电阻与位移行为、相对密度、X射线衍射（X-ray Diffraction，XRD）物相组成、维氏硬度与断裂韧性、典型压痕裂纹形貌、晶粒尺寸分布及能量色散X射线能谱（Energy Dispersive Spectrometer，EDS）线扫描结果的实验数据。上述数据为相关手稿中报道的所有图表与核心结论提供了实验支撑。