2016年2月5日 · Al 4 C 3 carbide nucleates at (111) facets on both (111) and (100) diamond surfaces. Explained the observed morphology of interfacial carbides by proposed mechanisms. Observed an epitaxial relationship between diamond and Al 4 C 3.

2023年12月1日 · Herein, carbon transport in Al4 C 3 is investigated to clarify the growth mechanism using density functional theory (DFT) calculations. Five basic jump pathways of carbon are considered based on vacancy-mediated diffusion, which is sufficient to simulate possible models.

2021年9月8日 · It was found that nanosized Al 4 C 3 is beneficial to increase the interface shear stress and improves mechanical properties, while microsized Al 4 C 3 severely deteriorates the strength of composites. Therefore, it is very important to control the size of Al 4 C 3 particles.

We conducted selected area diffraction (SAD) analysis on several crystallites of size 1–2 µm. The thickness of the specimen was ≈ 100 nm. The crystallites highlighted by “A,” “B,” and “C” in Fig. 4a do not overlap with other grains. The SAD patterns obtained at these grains are shown in …

2024年9月30日 · The compound exhibited a significant 75% increase in hardness after 2 h of sintering, primarily attributed to the nucleation and growth of Al4C3 nanorods. The HRTEM analysis, combined with geometric phase analysis (GPA) at and near the Al-Al4C3 interface of the nanorods, revealed strain field distributions primarily associated with partial ...

2023年10月13日 · Carbide’s microstructural and crystallographic characteristics have been determined using SEM, TEM, and HRTEM. The formation of Al4C3 depends on the annealing temperature and holding time. The carbides have rod-like shapes. They are distributed predominately at grain boundaries.

2015年9月7日 · 为图1（C）中的杆状A14C，相的选区电子衍射（SAD）， 此衍射花样为具有孪晶斑点，基体斑点为[010]晶带轴. 电子衍射。任取另一杆状ALC，相（图1（e）），做选区. 电子衍射，发现衍射斑点与图1（d）一样具有孪晶斑点， 如图1（f）。

2019年4月30日 · Al 4 C 3 single crystals are synthesized by the reaction between SiC and aluminum and are structurally verified and analyzed by Raman and X-ray diffraction spectra. The optical absorption measurements of the Al 4 C 3 crystals indicated that the bandgap is about 2.3 eV, which surprisingly is much higher than the bandgap value from the literature.

摘要 在这项工作中，研究了碳化铝 (Al4C3) 对由 SiC 和碳纳米管 (CNT) 增强的铝基复合材料的力学性能和热行为的影响。 在后热处理过程中，Al4C3 的形成被精确控制在 530°C 到 630°C（Al 熔点的 80%–95%）的温度范围内。

2005年2月1日 · By analyzing the fracture morphology and SEM image of SiCp/2A14 joint section, it is was found that the porosity of weld and Al4C3 brittle phase were the important factors limiting the strength...