[Journal of the European Ceramic Society] Additive manufacturing of green ceramic by selective laser gasifyingof frozen slurry
作者：Geng Zhang, Hua Chen,? Hongwei Zhou
關(guān)鍵字：Additive manufacturing, Ceramic ,Slurry ,Laser gasifying ,Freezing
論文來源：期刊
具體來源：Journal of the European Ceramic Society 37 (2017) 2679–2684.
發(fā)表時間：2017年
The slurry-based additive manufacturing (AM) of ceramics involves a drying process to form solid support; however, the drying process is time-consuming, and the support is not easily removed. We propose a new AM process for green ceramic that includes freezing a layer of aqueous ceramic slurry, laser gasifying of the frozen-layer ice to process 2D green ware, and removing the support in water to release the 3D ceramic part. With a suitable laser power and scanning speed, this approach can yield a layer that has a thickness of 90 m, a cantilever structure with a wall thickness of 115 m and a span of 30 mm without deflection. The casting layer cannot be damaged by using a cryopanel to rapidly freeze the slurry, and redundant frozen materials can be melted in water without swelling. Therefore, this new process can rapidly form a solid support and has a high removal efficiency