Due to high absorbance of UV light and low solid loading, the stereolithography-based additive manufacturing of gray-colored and dense Si₃N₄ ceramic is of significant difficulty and challenge. The effects of geometric properties of ceramic powders on the curing performance were investigated by studying the absorption difference of the Si₃N₄ ceramic particles with different colors and particle sizes and ultraviolet light. The results show that the transmission of ultraviolet light and curing performance of the darker Si₃N₄ ceramic slurry are much poor. Under the same particle size, the Si₃N₄ ceramic slurry using lighter particles presents the smaller scattering coefficient. The scattering coefficient (∼202) of the gray powder with ∼0.8 μm average particle size is the smallest. Under the same color, the larger the particle size, the smaller the scattering coefficient. The smallest scattering coefficient of the white powder with ∼2.0 μm average particle size is ∼110.

由于紫外光的高吸收性和低固体含量，因此基于立体光刻法的灰色致密Si ₃ N ₄陶瓷增材制造面临着巨大的困难和挑战。通过研究不同颜色，粒径的Si ₃ N ₄陶瓷颗粒和紫外光的吸收差异，研究了陶瓷粉末的几何性能对固化性能的影响。结果表明，较暗的Si ₃ N ₄陶瓷浆料的紫外光透射率和固化性能很差。在相同粒径下，Si ₃ N ₄使用较轻颗粒的陶瓷浆料呈现较小的散射系数。平均粒径约为0.8μm的灰色粉末的散射系数（约为202）。在相同的颜色下，粒径越大，散射系数越小。平均粒径约为2.0μm的白色粉末的最小散射系数约为110。