Abstract Recently, complex-shaped ceramic components are being fabricated by using 3D printing and subsequent chemical vapor infiltration (CVI) processes. The results indicate that both sintering temperature and CVI time significantly influence mechanical properties of 3D-printed ceramic components. At the sintering temperature of 1500 °C due to high sintering temperature. As 3D-printed ceramic parts render low strength after sintering at 1500 °C, the subsequent CVI process is carried out to increase the flexural strength (2 times) by introducing SiC, and in turn, improving the density of ceramics. One should note that the CVI-induced SiC is deposited on the surface of Al2O3 grains, improving the strength of the ceramics. The proposed sintering mechanism consists of the deformation of grains and subsequent densification, leading to the deformation of ceramic components.

中文翻译：

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烧结温度和CVI时间对3D打印氧化铝陶瓷力学性能的影响

摘要 最近，通过使用 3D 打印和随后的化学气相渗透 (CVI) 工艺制造复杂形状的陶瓷部件。结果表明，烧结温度和 CVI 时间都显着影响 3D 打印陶瓷部件的机械性能。由于烧结温度高，在1500°C的烧结温度下。由于 3D 打印的陶瓷部件在 1500°C 下烧结后强度较低，因此进行后续的 CVI 工艺，通过引入 SiC 来提高弯曲强度（2 倍），进而提高陶瓷的密度。需要注意的是，CVI 诱导的 SiC 沉积在 Al2O3 晶粒表面，提高了陶瓷的强度。所提出的烧结机制包括晶粒变形和随后的致密化，